ArticlePDF Available

The National Sentinel Clinical Audit of Epilepsy-Related Death: Epilepsy-Death in the Shadows

Authors:
  • SUDEP Action
  • UCL Queen Square Institute of Neurology
National Sentinel
Clinical Audit of
Epilepsy-Related
Death
National Sentinel
Clinical Audit of
Epilepsy-Related
Death
REPORT 2002: SUMMARY
The National Sentinel Clinical Audit of Epilepsy-Related Death was managed and
coordinated by Epilepsy Bereaved. The audit forms one of a series of initiatives to
improve epilepsy services conducted under the umbrella organisation of the Joint
Epilepsy Council. Participating organisations in the audit included the International
League against Epilepsy (British Branch), the Royal College of General Practitioners, the
Royal College of Nursing, the Royal College of Paediatrics and Child Health, the Royal
College of Pathologists and the Royal College of Psychiatrists (Learning Disability
Faculty).
The National Institute for Clinical Excellence (for England and Wales), the Scottish
Executive and the Northern Ireland Department of Health, Social Services and Public
Safety are associated with the National Sentinel Clinical Audit of Epilepsy-Related Deaths
through funding contracts. The funding bodies consider the work of the Audit to be of
value to the NHS in all countries in the UK and recommend that it be used to inform
decisions on service organisation and delivery.
The National Audit should be cited as follows:
Hanna N J, Black M, Sander JW, Smithson WH, Appleton R, Brown S, Fish DR (2002)
The National Sentinel Clinical Audit of Epilepsy-Related Death: Epilepsy – death in the
shadows. The Stationery Office.
© Epilepsy Bereaved
Epilepsy Bereaved Online Information (www.sudep.org)
The full report of the National Sentinel Clinical Audit of Epilepsy-Related Death
and information resources to support professionals, patients and families are
available from the Epilepsy Bereaved website, www.sudep.org.
Epilepsy Bereaved commissioned the College of Health to conduct research into
the experiences of bereaved relatives who contacted the charity during the period
of the audit. A report on this research will also be published on this site during
2002.
National Sentinel
Clinical Audit of
Epilepsy-Related Death
REPORT 2002: SUMMARY
Ms N. Jane Hanna Director of Epilepsy Bereaved;
Joint Epilepsy Council representative
Dr Marjorie Black Consultant forensic pathologist;
Royal College of Pathologists representative
Professor Josemir W. Sander Consultant neurologist;
International League against Epilepsy representative
Dr W. Henry Smithson General practitioner;
Royal College of General Practitioners representative
Dr Richard Appleton Consultant paediatric neurologist;
Royal College of Paediatrics and Child Health representative
Professor Stephen Brown Consultant neuropsychiatrist;
Royal College of Psychiatrists (Learning Disability Faculty)
representative
Professor David R. Fish Consultant clinical
neurophysiologist and neurologist; International League against Epilepsy
representative
Produced by Epilepsy Bereaved
Registered Charity 1050459
PO Box 112, Wantage, Oxfordshire, OX12 8ER
Office: 01235 772850
Bereavement contact line: 01235 772852
©Epilepsy Bereaved 2002
All rights reserved. The text of this report may be reproduced without formal
permission or charge for personal or in-house use. No reproduction by or for
commercial organisations is permitted without the express permission of
Epilepsy Bereaved.
©Copyright Epilepsy Bereaved 3
FOREWORD
We warmly welcome this landmark report and congratulate Epilepsy Bereaved for its project
management of the National Sentinel Clinical Audit of Epilepsy Deaths. We thank Epilepsy
Bereaved on behalf of the UK Health Departments for championing sudden unexpected death
in epilepsy and for successfully co-ordinating this multidisciplinary and wide-ranging project.
National sentinel audits are comprehensive clinical audits recently introduced in the NHS.
This audit of epilepsy deaths will enable health professionals locally to review their practice
and address any developmental needs.
Epilepsy is the most common chronic disabling condition of the nervous system affecting
around 400,000 people in the UK. Almost 1,000 deaths occur every year as result of the
illness and most of them are associated with seizures. There has been a need for some time to
better understand and reduce the number of epilepsy deaths.
This important and carefully executed piece of work focuses on that need. It reveals
weaknesses in both clinical service and aspects of the treatment infrastructure. It shows that by
addressing poor epilepsy management, there is the potential to achieve a reduction in the
number of deaths.
The audit was sponsored by the National Institute for Clinical Excellence (NICE), and the
health departments of the devolved administrations. A short summary report for England and
Wales, published by NICE, is also available. A similar short report is going to be published by
Epilepsy Bereaved and this will be disseminated in Scotland and Northern Ireland.
We recommend this report, which will be available widely to the National Health Service. We
also give a commitment to consider what can be done to address the weaknesses in care it
identifies. By doing this we will demonstrate that by taking action now, lives may be saved.
Sir Liam Donaldson, Dr Ruth Hall,
Chief Medical Officer England Medical Officer Wales
Dr Mac Armstrong, Dr Henrietta Campbell,
Chief Medical Officer Scotland Chief Medical Officer Northern Ireland
Box A
Definition of SUDEP
1
BACKGROUND
Epilepsy, meaning a tendency to have recurrent seizures, is the most common serious
neurological condition. At any one time between 1 in 140 and 1 in 200 people in the UK
(at least 300,000 people) are being treated for epilepsy (1,2). Each year, in a community
of 250,000 people, between 125 and 200 will develop epilepsy (3).
People with epilepsy have a risk of premature death that is 2–3 times higher than in the
general population (4). Most premature deaths among people with epilepsy are directly
related to the epilepsy itself. Every year in the UK about 1000 people die because of
epilepsy, and most of these deaths are associated with seizures. Sudden unexpected death
in epilepsy or SUDEP (Box A) is the principal cause of seizure-related death in people
with chronic epilepsy and has been estimated to account for about 500 deaths each year.
Young adults are most at risk of SUDEP, and most deaths occur at home. Although it is
not entirely clear what causes SUDEP, the most important risk factor is the occurrence
of seizures – the more frequent the seizures, the higher the risk (5). Since most epilepsy
deaths are related to seizures, good seizure control is the key to minimising the risk
of death.
What is SUDEP?
‘SUDEP is the sudden, unexpected, witnessed or unwitnessed, non-traumatic and
non-drowning death in patients with epilepsy, with or without evidence for a
seizure, and excluding documented status epilepticus, in which post-mortem
examination does not reveal a toxicological or anatomical cause for death.’ (6)
Most people with epilepsy (up to 70%) have the potential to be seizure-free, but five
government reports over a 50-year period have drawn attention to the neglect of epilepsy
and there has been little action (7). Another problem is the inconsistency with which the
causes of death in people with epilepsy are reported – this may be due to a lack of
awareness of epilepsy-related death among clinicians, coroners and pathologists (8,9).
4©Copyright Epilepsy Bereaved
©Copyright Epilepsy Bereaved 5
Box B
How the audit was
developed
2
AUDIT METHODS
The National Sentinel Clinical Audit of Epilepsy-Related Death – reported in summary
here – was the result of a call for a confidential enquiry into epilepsy-related deaths. The
aim was to establish whether deficiencies in the standard of clinical management, or in
the overall healthcare package, could have contributed to the deaths. Two key areas were
reviewed:
investigations into the deaths (pathology)
general practice and hospital-based care.
The audit was developed using a structured approach (Box B) involving
multiprofessional and lay groups. The audit team reviewed the official records of
individuals who died of an epilepsy-related death, in the UK, between September 1999
and August 2000. During that time, 2412 deaths were reported where epilepsy was
mentioned somewhere on the death certificate.
How was the audit developed?
A steering group provided overall guidance; an executive committee planned and
monitored audit activity; an audit officer and five nurses (fieldworkers)
identified cases and collected data.
Criteria for standards of care in pathology and primary and secondary care were
identified using published guidelines (including references 10–13), literature
searches and the views of expert panels in these three areas. Audit tools were
developed, and data were collected and analysed.
Panels of experts for review of the audit findings were drawn from pathology,
primary and secondary care to reflect the views of clinicians with a particular
interest in epilepsy care (panel membership is listed in appendix 1 of the full
report).
2.1
Box C
Audit of investigation
of deaths
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
Full details of the methods used for the audit are presented in the full report which is
available from the Epilepsy Bereaved website (www.sudep.org). Copies of the audit tools
and criteria are available from Epilepsy Bereaved.
AUDIT OF INVESTIGATION OF DEATH
Of the 2412 deaths with epilepsy on the death certificate, 1023 were subject to post-
mortem and 1389 were not.
For the audit of investigation of death, records were examined for 439 (43%) of the
1023 deaths for which there were post-mortem records and for 156 of the 1389 deaths
for which there were no post-mortem records (see Box C).
In the pathology audit the areas examined were: background, post-mortem examination,
further investigations and cause of death – with information collected from post-mortem
reports and coroner’s officer and police reports.
Deaths with post-mortem
records n = 1023
Deaths with epilepsy mentioned
on the death certificate n = 2412
Audited
n = 439 (43%)
Deaths without post-mortem records
(doctor-certified) n = 1389
Audited
n = 156 (11%)
Not audited
(coroner or procurator fiscal
did not respond)
n = 584
Not audited
(details of certifying doctor unavailable)
n = 1233
595 deaths (25%) audited for investigation of death
Further details of the investigation are contained in Chapter 2 of the full report.
6©Copyright Epilepsy Bereaved
©Copyright Epilepsy Bereaved 7
AUDIT METHODS
2.2
Box D
Audit of
pre-mortem care
AUDIT OF GENERAL PRACTICE AND
HOSPITAL-BASED CARE
For the audit of care before death, a total of 286 primary care case notes and 180
secondary care case notes were examined. (For more details of the cases audited,
see Box D.)
In the audit of general practice and secondary care the areas examined were: access to
care and clinical assessment, investigations, drug treatment, non-drug therapies,
continuing care, information and support, and communication between professionals
and services.
Case notes available for audit of
pre-mortem primary care n = 286
Patients in primary care
(for epilepsy) only n = 45
Patients who had been referred for
secondary care (for epilepsy) n = 241
Deaths where epilepsy was judged to be
probable cause of death from examination
of death certificate n = 812
(of 2412 deaths with epilepsy mentioned
on the death certificate)
Excluded from audit of pre-mortem care
because notes unavailable (n = 505) or
review of notes indicated death may not
be epilepsy-related (n = 21) Total n = 526
Secondary care notes audited n = 180
Adults
Without learning disability n = 108
With learning disability n = 50
Total n = 158
Secondary care notes unavailable n = 61
Children
n = 22
Further details of the audit of general practice and hospital-based care are contained in
Chapter 2 and Appendix 2 of the full report.
8©Copyright Epilepsy Bereaved
3.1 INVESTIGATION INTO THE DEATHS
Although most deaths were confirmed as being in keeping with epilepsy as the cause,
many (87%, 383/439) of the deaths involving a post-mortem were considered to have
been inadequately investigated. Because deaths were not appropriately or adequately
investigated it was difficult to establish the true number and/or nature of epilepsy-related
deaths in this audit, highlighting a problem of reliance on national certification data in
relation to epilepsy deaths. The main problems with post-mortems were with ‘further
investigations’ and the ‘stated cause of death’ (Figure 1).
aThe post-mortem examination was inadequate only because at least one further investigation had not
been done. The values do not include examinations for which there was at least one other inadequacy in
addition to inadequate further investigations.
Figure 1
Categories in which post-
mortem investigation was
inadequate
10
0
20
40
50
60
80
90
28
41
36
000 000
87
41
52
31
26
39
100
Further
investigationsa
% of audited post-mortems
England n = 352
Wales n = 27
Scotland n = 56
N Ireland n = 4
Internal
examination Stated cause of
death
Category
External
examination
70
30
3
FINDINGS
©Copyright Epilepsy Bereaved 9
FINDINGS
3.1.1
Box E
Further investigations during
post-mortem
3.1.2
Further investigations
Further investigations (Box E) were not carried out or were not standardised. Of 439
post-mortems, 377 (86%) did not include all further investigations listed in Box E. 34%
(130/383) of post-mortems were inadequate only because at least one further
investigation had not been done (Figure 1 gives national percentages). These
investigations are important to eliminate other potential causes of death.
‘Further investigations’ carried out during
post-mortem
Toxicology – blood analysis for alcohol and drugs
Histology – microscopic examination of small pieces of major organs
Neuropathology – specialist examination of brain and nervous system
Stated cause of death
Whether or not a post-mortem was carried out, the cause of death stated was inconsistent
and, in some cases, inappropriate. Of the 156 deaths certified without post-mortem, 39
were certified as due to epilepsy. Of these, 38% (15/39) were sudden and/or unwitnessed
and should have been subject to post-mortem. The cause of death was inadequately
stated in 41% (178/439) of deaths involving a post-mortem.
The main deficiencies in reporting a cause of death were as follows:
Phrasing of the cause of death. This was very variable (Box F). ‘SUDEP’, which is a
term that has been in use since 1997, was cited in 9% (54/595) of audited cases.
A cause was often cited (e.g. asphyxia, aspiration of stomach contents, status
epilepticus) despite a lack of pathological evidence.
In some cases, every medical condition the person had was listed on the death
certificate, even where this had not contributed to the death.
Box F
Terms used to describe the
cause of death
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
10 ©Copyright Epilepsy Bereaved
3.1.3
3.2
3.2.1
Some terms used to describe the cause of death
Epilepsy
Epileptic seizure
Status epilepticus
Sudden adult death syndrome (SADS)
SUDEP
Unascertained
Examination of the body
In a minority of deaths the external or internal examination of the body was considered
inadequate (27% [117/439] of external examinations and 7% [29/439] of internal
examinations).
AUDIT OF GENERAL PRACTICE AND
HOSPITAL-BASED CARE
Referral for specialist care
After a first seizure, individuals are normally referred to secondary care by their GP. Of
the 286 people whose GP case notes were audited, 84% (241/286) had been referred.
The referral process was analysed for people whose epilepsy was diagnosed recently (that
is, within 5 years before death; n=47). Information on referral and waiting times was
available for 26 of these individuals. Of these, 69% (18/26) had been referred by their
GP within 1 week; but for 15% (4/26) it had taken between 1 and 6 months to be
referred by their GP. Waiting times for a specialist appointment were long, with 15%
(4/26) of individuals having to wait more than 6 months (Figure 2).
©Copyright Epilepsy Bereaved 11
FINDINGS
Referral specialty
Referral should be to a specialist with an interest in epilepsy (12). Just under half
(18/37) of individuals diagnosed in the 5 years before death were initially referred to an
adult or paediatric neurologist (Figure 3).
3.2.2
Figure 2
Time from seeing GP to
appointment (n = 26)
10
0
20
40
50
60
80
90
69
23
16
8
54
4
16 12
0
100
Less than
1 week 7 to 12
months
Time taken for GP to refer
Time between referral and
appointment
1 week to
1 month 1 to 6
months More than
12 months
70
30
%
Figure 3
Chosen specialty for initial referral
Neurology (16) 43%
A&E (2) 5%
Learning disability (1) 3%
Psychiatrist (1) 3%
Elderly medicine (3) 8% General medicine (5) 14%
Other (4) 11%
Paed neurology (2) 5%
Paediatrics (3) 8%
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
12 ©Copyright Epilepsy Bereaved
3.2.3
3.2.4
There was documented evidence that 80% (127/158) of the adults and 77% (17/22) of
children whose secondary care notes were audited had seen a consultant at some time
during their secondary care. The case notes indicated that 66% (91/138) of all adults seen
in outpatients had seen a neurologist during at least one of their last three appointments;
35% (7/20) of all children seen in outpatients had seen a paediatric neurologist during at
least one of their last three appointments.
Seizure status
Of the people whose deaths were included in the audit of secondary care, 3% were
recorded as seizure-free at their last hospital appointment (Figure 4).
None of the 22 children whose secondary care notes were audited were known to be
seizure-free in the year before they died.
Primary care notes indicated that 11% (26/241) of patients referred to secondary care
had evidence of an increase in seizure activity in the three months before death.
Hospital visits
At least 37% (54/147) of adults who were not recorded as being seizure-free had not
been seen in the year before they died.
Around 15% (23/158) of adults had missed at least one of their last three
appointments but there was no standard way in which these missed appointments
were managed. Of the 23 adults who had missed at least one appointment, 57%
(13/23) had been sent at least one further appointment and 30% (7/23) were not
sent any further appointments; it was unclear what action had been taken in 13%
(3/23) cases.
Figure 4
Seizure frequency (adults and
children n = 180)
Between once a week
and once a month
(22) 12%
Not recorded (46) 27%
Unclear (36) 20%
Seizure free (6) 3%
Between once a month
and once a year
(35) 19%
Once a week or more (21) 12%
Less than once a year (8) 4%
Single seizure (or 1st in many years) (6) 3%
©Copyright Epilepsy Bereaved 13
FINDINGS
Although all children were seen in secondary care in the year before death, it was
considered that 36% (8/22) of children had inadequate access to appropriate care.
The main deficiency was lack of access to appropriate specialist care for children
who had learning and/or physical disabilities and frequent seizures.
Re-referral
The audit of all of the primary care case notes showed a lack of re-referral by the GP for
individuals fulfilling the criteria for reassessment. Among the 241 individuals receiving
combined GP/specialist care, the GP notes suggested that 28% (68/241) fulfilled the
criteria for re-referral. Of these 68, only 9% (6) were re-referred. Although four
individuals receiving all of their care through the GP had a change in seizure frequency,
none was referred.
Special needs
There were particular concerns about access to specialist care for people with special
needs. For example, only 5% (2/43) of the adults with learning disability seen in
outpatients had evidence that they had seen a specialist with an interest in learning
disability and 6% (3/50) of adults with learning disability had been lost to follow-up in
the transfer from paediatric to adult care.
Clinical assessments
Documentation of clinical assessments was variable throughout primary and secondary
care. Many details were lacking in relation to classification of seizure type and syndrome,
seizure triggers, seizure frequency, drug treatment issues and non-drug therapies. For
example, in 47% (74/158) of adults and 36% (8/22) of children whose secondary care
case notes were audited seizure frequency had either not been recorded or was unclear.
Hospital investigations
Secondary care notes did not report a scan for 57 adult patients (57/158, 36%) – at
least 19 of these should have had one according to existing guidance (11,12).
There was no documented report of an EEG for 51 (32%) of the adult patients – at
least 22 of these should have had one because they were aged under 25 at the age of
diagnosis (12).
no brain scan or EEG was documented for seven (32%) of the 22 children whose
secondary care notes were audited, although all of these children should probably
have undergone these investigations.
Drug management
Most adults (76% [119/156; data unavailable for 2 adults]) were receiving one or
two anti-epilepsy drugs (AEDs). However, 6% (9/156) of adults and 18% (4/22) of
children were not receiving any anti-epilepsy medication when they died.
Drug management was inadequate in 20% (32/158) of adults and 45% (10/22) of
children. Problem areas of drug management are shown in Box G.
3.2.5
3.2.6
3.2.7
3.2.8
3.2.9
Box G
Problem areas of drug
management
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
14 ©Copyright Epilepsy Bereaved
3.2.10
Problem areas of drug management
No medication prescribed despite ongoing seizures
Inappropriate choice of AEDa
Inappropriate combinations of AEDs
Doses too low or inappropriate
Unsupervised/inappropriate management of AED changes
Little consideration of alternative or additional AEDs in cases of
ongoing seizures
Major drug errors (e.g. abrupt cessation of treatment)
aAED = anti-epileptic drug
In secondary care 14% (22/158) of adults had a problem adhering to their drug
regimen.
In primary care 27% (65/241) of those referred had a documented medication
record. Of those with a drug record, 26% (17/65) ordered their medication later
than anticipated, indicating poor adherence.
Patient review through primary care
From the audit of all the primary care case notes there was evidence that the review
process in primary care was unstructured and lacking in detail.
Of patients who were also receiving secondary care, there was evidence that 78%
(187/241) had been reviewed by either the GP or specialist in the year prior to death
and 31% (75/241) had been seen by the GP at their last review.
In the year before they died, there was documented evidence that only 33% (15/45)
of those who received all of their care through the GP had been reviewed.
Most GP reviews were only to provide medication or to check blood drug levels.
29% (82/286) of individuals whose primary care notes were audited had been seen
by their GP for non-epilepsy-related problems in the month before they died, which
would have been a good opportunity for the GP to talk about their epilepsy.
In at least 13% (36/286) of deaths there were communication failures with no
action recorded following contact by a patient with A&E or an emergency GP, or
following recordings of increased seizure frequency.
©Copyright Epilepsy Bereaved 15
FINDINGS
3.2.11 Information provision
There was little written evidence in secondary care to suggest that epilepsy and its
management, and in particular the hazards of epilepsy (including the risk of death),
had been discussed with individuals (Figure 5).
Primary care notes indicated that 31% (89/286) of individuals with epilepsy had
some recorded information provision on epilepsy from a health professional in
primary or secondary care. Only 1% (3/286) had documented that information had
been given on the risk that seizures could be fatal, even amongst most of the
individuals in this audit whose epilepsy required ongoing care and who had many
apparent risk factors.
The help of specialist epilepsy nurses and counsellors was rarely recorded and may
not have been used.
Rarely was there any indication that the individual or their carer/family had been
told about voluntary organisations and patient advocacy support groups.
Consequently, they might not have been able to take advantage of the advice and
support that these organisations could have provided.
Although at least 14% (22/158; secondary care audit) of adults had a problem
adhering to their drug regimen, there was little to suggest that this important issue
was discussed with patients. Further, only 9% (2/22) had documented information
about the hazards of seizures and none about the risk of death.
Figure 5
Information documented as
provided to adults and children in
secondary care n = 180
10
0
20
40
50
60
80
90
31
47
26
32
25
41
16
27
13
67
0
7
14
1
5
100
Side effects of AEDs
n = 167
Type of epilepsy or
syndrome
Social factors
Leisure factors
Importance of
taking AEDs n = 167
Hazards of seizures
Patient support
group information
Possibility of
fatal seizures
%
70
30
All adults n = 158
Children n = 22
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
16 ©Copyright Epilepsy Bereaved
3.2.12
3.2.13
3.3
3.3.1
Contact with relatives after death
From the records audited, there was little documented evidence of contact with relatives
after a death. About 10% (18/180; secondary care audit) of families of people who died
were contacted after the death by the specialist. (Only 5% [8/158] of families of adults
were contacted compared with 45% [10/22] of families of children who died.) Only 7%
(19/286, primary care audit) of all families were contacted by the GP after the death.
Contact with relatives is particularly important in relation to epilepsy deaths because
many deaths are sudden and unexpected and families experience bewilderment, isolation
and prolonged distress (14).
Estimate of SUDEP deaths
Results of a review of the clinical circumstances of deaths reported in this audit suggests
that approximately 60% of all epilepsy deaths were SUDEP and a further 7% were
possible SUDEP. This is an estimate only and could not be confirmed because of the
inadequacy of post-mortem investigations reported in this audit.
PANEL REVIEW OF OVERALL
QUALITY OF CARE
Secondary care
An expert panel reviewed the specific findings from the audit of secondary care and
judged the overall quality of care received by individuals.
Adults
The panel considered that care had deficiencies for 54% (85/158) of adults (Figure 6).
There tended to be deficiencies in more than one aspect of care. The panel considered
that the main deficiencies in epilepsy management in these 158 adults, excluding lack of
information and support, were:
inadequate access to specialist care 35% (56/158)
access to outpatients 28% (45/158)
not seen by consultant 7% (11/158)
inadequate drug management (20%, 32/158)
lack of appropriate investigations (13%, 21/158)
no evidence of a package of care (5%, 8/158)
inadequate recording of history (5%, 8/158)
patient ‘lost’ in transfer from child to adult services (2%, 3/158)
one or more major clinical management errors (5%, 4/158)
©Copyright Epilepsy Bereaved 17
FINDINGS
Figure 6
Distribution of inadequacies of
care in adults (85 of 158
deaths)
Note: the distribution is shown for the 85 adults whose care was judged to have had at least one
inadequacy; for some adults, care had more than one inadequacy
Overall, 39% (62/158) of adult deaths were considered by the expert panel to have been
potentially or probably avoidable.
Children
The panel considered that care had deficiencies in 77% (17/22) of children. There tended
to be deficiencies in more than one aspect of care. The panel considered that the main
deficiencies in epilepsy management in these 22 children, excluding lack of information
and support, were:
inadequate drug management (45%, 10/22)
inadequate access to specialist care (36%, 8/22)
inadequate investigations (32%, 7/22).
Overall, 59% (13/22) of deaths in children were considered by the expert panel to have
been potentially or probably avoidable.
Inadequate access to outpatients (n = 45)
‘Lost’ in the transfer from child
to adult services (n = 3)
One or more major errors (n = 4)
Inadequate drug management (n = 32)
No evidence of a package of care (n = 8)
Inadequate history (n = 8)
Not seen by
consultant (n = 11)
Lacked appropriate
investigations (n = 21)
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
18 ©Copyright Epilepsy Bereaved
3.3.2
Figure 7
Main reasons that care was
considered inadequate in children
(17 deaths)
Inadequate drug treatment (n = 10)
Inadequate access to consultant (n = 8)
Inadequate investigations (n = 7)
Note: the distribution is shown for the 17 children whose care was judged to have had at least one
inadequacy; for some children, care had more than one inadequacy
Primary care
Detailed information in primary care records was sparse and for this reason judgements
of overall quality of care were not made in relation to individual patients who died. The
primary care panel considered the main inadequacies in primary care management were:
lack of timely access to skilled specialists
sparse evidence of structured management plans
triggers for referral were sometimes missed
professional communication failures.
For example, only 31% (8/26) were seen within 4 weeks by a specialist; only 8%
(6/72) of patients with indications for re-referral were referred to secondary care and
there were concerns about communication in 13% (36/286).
©Copyright Epilepsy Bereaved 19
4.1
4.2
AUDIT OF INVESTIGATION OF DEATHS
It was difficult to establish the true number and/or nature of epilepsy-related deaths from
national data. National statistics are an important source for monitoring public health,
setting targets for healthcare policies, and research aimed at reducing epilepsy-related
deaths. The results of this audit indicate that because of the high percentage of
inadequately investigated epilepsy-related deaths, action should be considered to
improve the quality of death certification in relation to these deaths.
Audit of general practice and hospital-based care
In general, record keeping was very poor throughout primary and secondary care.
Although an audit based on case notes cannot assess non-recorded activity and so the
findings may not be entirely comprehensive, the information obtained raises matters of
urgent concern.
Epilepsy-related death, particularly SUDEP, is still underestimated by healthcare
professionals and this may reflect the mistaken belief that epilepsy is a benign condition.
The risk of death associated with epilepsy appeared rarely to have been discussed with
patients or their families. There was little documented evidence of contact with bereaved
relatives after the death. These issues need to be highlighted with all relevant
professionals through better education.
There was concern about many aspects of epilepsy management and frequently
management did not meet published national criteria. There are particular problems in
managing epilepsy in people who have associated problems such as learning difficulties.
From the available documentation, the audit found evidence of deficiencies in access to
and quality of care, communication between clinical staff and between healthcare
professionals and patients and their families, documentation, and post-mortem
investigation of epilepsy-related deaths.
4
CONCLUSIONS
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
The audit highlights the need for education of healthcare professionals and organisations
responsible for epilepsy services about the principles of epilepsy management and the
risks of epilepsy-related deaths and the need for support to these services.
These system failures need to be addressed when planning professional education,
clinical and audit guidance and systems for service delivery. By its very nature, an audit of
epilepsy-related deaths should not be assumed to be representative of the care provided
to patients in general. Nevertheless, an audit can compare clinical care to published best
practice guidelines in a systematic way. This clinical audit does not establish that the
epilepsy-related deaths were directly caused by inadequate care – but it provides
important findings about shortcomings in care that may have contributed to a
substantial number of potentially avoidable deaths.
Further action
The audit report has been disseminated to policymakers and stakeholders to
provide strategic guidance for the prevention, investigation and management of
epilepsy-related deaths.
20 ©Copyright Epilepsy Bereaved
©Copyright Epilepsy Bereaved 21
1. Muir TM, Bradley A, Wood SF, Murray GD, Brodie MJ (1996) An audit of treated
epilepsy in Glasgow. West of Scotland Epilepsy Research Group. Seizure 5(1): 41–46.
2. Wallace H, Shorvon S, Tallis R (1998) Age-specific incidence and prevalence rates of
treated epilepsy in an unselected population of 2,052,922 and age-specific fertility
rates of women with epilepsy. Lancet 352: 1970–1973.
3. Frost S, Crawford P, Mera S and Chappell B (2002) National Statement of Good
Practice for the Treatment and Care of People who have Epilepsy. Joint Epilepsy
Council. Available via www.jointepilepsycouncil.org.uk.
4. Cockerell OC, Johnson AL, Sander JWAS, Hart YM, Goodridge DM, Shorvon SD
(1994) Mortality of epilepsy: results from a prospective population-based study.
Lancet 344: 918–921.
5. Nilsson L, Farahmand BY, Persson PG, et al (1999) Risk factors for sudden
unexpected death in epilepsy: a case-control study. Lancet 353: 888–893.
6. Nashef L (1997) Sudden unexpected death in epilepsy: terminology and definitions.
Epilepsia 38 (Suppl. 11): S6–8.
7. CMO (2001) Epilepsy – death in the shadows. In: Annual Report 2001, Chief
Medical Officer, Department of Health, London.
8. Coyle HP, Baker-Brian N, Brown SW (1994) Coroners’ autopsy reporting of sudden
unexplained death in epilepsy (SUDEP) in the UK. Seizure 3(4): 247–254.
9. Nashef L, Sander JWAS (1996) Sudden unexpected deaths in epilepsy – where are we
now? Seizure 5(3): 235–238.
10. Royal College of Pathologists (1993) Guidelines for Postmortem reports. Royal College
of Pathologists, London.
REFERENCES
NATIONAL SENTINEL CLINICAL AUDIT OF EPILEPSY-RELATED DEATH
22 ©Copyright Epilepsy Bereaved
11. Wallace H, Shorvon SD, Hopkins A, O’Donoghue M (1997) Guidelines for Adults
with Poorly Controlled Epilepsy. Royal College of Physicians, London.
12. SIGN (1997)
Diagnosis and Management of Epilepsy in Adults. Scottish Intercollegiate
Guidelines Network, Royal College of Physicians, Edinburgh.
13. Taylor MP (2000) Managing Epilepsy: a Clinical Handbook.
Oxford: Blackwell Science Ltd.
14. Nashef L, Garner S, Sander JWAS, Fish DR, Shorvon SD (1998) Circumstances of
death in sudden death in epilepsy: interviews of bereaved relatives. Journal of
Neurology, Neurosurgery and Psychiatry 64(3): 349–352.
... In many cases, those bereaved by epilepsy-related death experience traumatic grief that can have long-term consequences on well-being [2]. Fewer than 1% of bereaved families reported knowing someone could die from epilepsy in 2002 [6] and, two decades ago, the UK Chief Medical Officers supported the development of an action plan to tackle the findings that at least 42% of epilepsy deaths are potentially avoidable [7]. Traumatic grief increases the risk of numerous physical and mental health outcomes, including suicidal ideation, cardiac disease, [8], lower social functioning, fatigue, and well-being [9]. ...
... We have become familiar with identifying vulnerable people and promoting the need to shield to prevent contact with the virus, but people bereaved by epilepsy already form a vulnerable group [7]; this research shows the harm of COVID-19 lockdowns on them. Many participants in this study had a historic diagnosis of a mental condition such as anxiety, depression, and post-traumatic stress disorder. ...
Article
Purpose: This study explores the impact of the COVID-19 pandemic and lockdown on people with lived experience of sudden bereavement as a consequence of an epilepsy-related death. Method: We developed an online survey with fixed choice and open-ended response formats to collect data on grief symptoms and well-being during the pandemic. A total of 275 people bereaved by epilepsy-related deaths between 1980-2020 participated in this study: with 79 participants providing free-text responses for inductive thematic analysis. Results: In total, 84% of participants reported a bereavement following a sudden death of a person aged under 40, with 22% aged 19 and under. The majority (77% of participants) reported they had been thinking more about the person who died compared to before the COVID-19 outbreak and 54% had experienced more distressing flashbacks to the time of death. Additionally, 61% reported more difficulties falling asleep and staying asleep and 88% of participants reported that the outbreak and response measures had negatively impacted upon their mental health. Medication was being taken for a diagnosed mental health condition by 33% of participants at the time of the study. We categorized these negative experiences during COVID in to four main-themes - 'Family', 'Lifestyle', 'Personal Well-being' and 'Health Services and Shielding Populations'. The 'Personal Well-being' theme was inextricably linked to grief symptoms including 'reflection on the death', 're-exposure to feeling', 'grief', 'salience of sudden deaths in the media' and 'inability to commemorate anniversaries and rituals'. These findings were consistent for bereaved people irrespective of the recency of the death. Conclusion: This study highlights the impact of the disruption caused by the pandemic on the grief-management of those bereaved by epilepsy-related death. Grief is not static and its management is connected to the psychosocial and formal support structures that were disrupted during the pandemic. The removal of these supports had an adverse effect upon the mental health and well-being of many bereaved. There is an urgent need for a system-wide transformation of epilepsy and mental health services to be inclusive of the needs and experiences of people impacted by sudden deaths in epilepsy and the contribution of the specialist service developed by families and clinicians to meet this gap.
... The National Epilepsy-related Death Assessment of the National Sentinel, led by Epilepsy-Lawyers, brought attention to this important issue. According to the audit, "1,000 people die each year in the United Kingdom from epilepsy", most of them from convulsions, and 42% of them are potentially avoidable [5]. ...
Article
Today, people are confronted with various types of stress in everyday life and the majority of people around the world are affected by various neurological diseases. Epilepsy is one of the most common brain diseases that affects about 50 million people worldwide, 90% of whom come from developing countries. Genetic factors, brain infections, strokes, tumors, high fever and other diseases cause epilepsy. It places a heavy economic burden on the health system in countries where stigma and discrimination are found against patients and their families, especially in communities, workplaces, schools and homes. Many epilepsy patients suffer from severe emotional pain, behavioral disorders and extreme social isolation.
... The recommendations on SUDEP and Risk discussion good practice included in the NICE [6] followed the stark concerns identified in The National Sentinel Clinical Audit on Epilepsy-Related Death, where they found that there had been communication in less than 1% of deaths. [32] Similar recommendations were made in Scotland by a Fatal Accident Inquiry in 2002. [33] The value of charities who work in the field of SUDEP/risk communication practices who can support the involvement of experts by experience to inform the design and outputs from research cannot be underestimated. ...
Article
Sudden Unexpected Death in Epilepsy (SUDEP) is a major concern for people with epilepsy, their families, their care givers, and medical professionals. There is inconsistency in the SUDEP counselling doctors provide, compared to what is recommended in clinical guidelines. Numerous national and international surveys have highlighted how epilepsy professionals, usually doctors, deliver SUDEP risk counselling, particularly, when they deliver it and to whom. These surveys help understand the unmet need, develop suitable strategies, and raise awareness among clinicians with the eventual goal to reduce SUDEPs. However, there is no standardised survey or essential set of questions identified that can be used to evaluate SUDEP counselling practice globally. This focused review analyses the content of all published SUDEP counselling surveys for medical professionals (n=16) to date covering over 4000 doctors across over 30 countries and five continents. It identifies 36 question themes across three topics. The questions are then reviewed by an expert focus group of SUDEP communication experts including three doctors, an expert statistician and SUDEP Action, an UK based charity specialising in epilepsy deaths with a pre-set criterion. The review and focus group provide ten essential questions that should be included in all future surveys inquiring on SUDEP counselling. They could be used to evaluate current practice and compare findings over time, between services, across countries and between professional groups. They are provided as a template to download and use. The review also explores if there is a continued need in future for similar surveys to justify this activity
... A 2002 audit of UK data found up to 40% of deaths were attributed to the wrong cause for PWE. 50 Epilepsy tends to be underestimated as a cause of death 8 26 and dismissed for other cardiovascular or respiratory explanations. 21 26 51 Indeed, we found other diseases were listed as primary cause of death which may in fact have been epilepsy. ...
Article
Full-text available
Objectives People with epilepsy (PWE) have a higher mortality rate than the general population. Epilepsy-related deaths have increased despite all-cause mortality decreasing in the general population pre-COVID-19. We hypothesised that clinical and lifestyle factors may identify people more at risk. Design We used a retrospective cohort study to explore cause of death and a nested case–control study to identify risk factors. Setting We explored factors associated with mortality using primary care population data from 1 April 2004 to 31 March 2014. Data were obtained from the Clinical Practice Research Datalink which compiles anonymised patient data from primary care in the UK. Cause of death data was supplemented from the Office of National Statistics when available. Participants The analysis included 70 431 PWE, with 11 241 registered deaths. Results The number of deaths within the database increased by 69% between the first and last year of the study. Epilepsy was considered as a contributing cause in approximately 45% of deaths of PWE under 35. Factors associated with increased risk of death included attendance at emergency departments and/or emergency admissions (OR 3.48, 95% CI 3.19 to 3.80), antiepileptic drug (AED) polytherapy (2 AEDs: OR 1.60, 95% CI 1.51 to 1.71; 3 AEDs: OR 2.06, 95% CI 1.86 to 2.29; 4+AEDs: OR 2.62, 95% CI 2.23 to 3.08), status epilepticus (OR 2.78, 95% CI 1.64 to 4.71), depression (OR 1.67, 95% CI 1.57 to 1.76) and injuries (OR 1.54, 95% CI 1.43 to 1.67). No seizures in the prior year (OR 0.52, 95% CI 0.41 to 0.65). Conclusion Our results add to existing evidence that deaths in epilepsy are increasing. Future studies could focus on identifying PWE at high risk and addressing them with clinical interventions or better self-management. Identifying specific risk factors for younger people should be a priority as epilepsy may be a factor in close to half of deaths of PWE under 35 years of age.
... The check revealed; "1,000 deaths occur annually in the UK due to epilepsy" and most of them are associated with seizures and 42% of deaths were potentially avoidable. (18) ...
Article
Full-text available
Today, people face various types of stress in everyday fast life and most people in the world suffer from various neurological disorder. Epilepsy is one of the most common neurological disorders of the brain, affecting about 50 million people around the world, and 90% of them are coming from developing countries. Genetic factors and brain infection, stroke, tumors and epilepsy cause high fever. It imposes a great economic burden on the health systems of countries associated with stigma and discrimination against the patient and also his family in the community, in the workplace, school and home. Many patients with epilepsy suffer from severe emotional stress, behavioral disorders and extreme social isolation. There are many different types of seizure and mechanisms by which the brain generates seizures. The two features of generating seizures are hyperexcitability of neurons and a hyper synchronousneural circuits. A variety of mechanisms alters the balance between excitation and inhibition in predisposing brain local or generalized hyperexcitability region and a hypersynchronia. Purpose of the review is to discuss the history, epidemiology, etiology, pathophysiology, classification of epilepsy, symtomps, diagnosis, management of epilepsy and future trends. Keywords: Anti-epileptic drugs, pathophysiology, seizures, epidemiology, hypersynchrony
Article
Objective: To estimate Mortality Rate (MR) in UK children with epilepsy (CWE) compared to children without epilepsy (CWOE), describe causes of death, determine Mortality Rate Ratios (MRRs) for cause-specific mortality, and to analyse the contribution of co-morbidities (respiratory disease, neoplasm, and congenital disorders) to mortality rate. Method: Retrospective cohort study of children born between 1998 and 2017, using linked data from the Clinical Practice Research Datalink Gold (Set 18). Epilepsy diagnoses were identified using previously validated codes. Causes of death were defined as natural or non-natural. Epilepsy-related deaths in CWE were those where underlying or contributing cause of death was epilepsy, status epilepticus, seizures, ill-defined/unknown cause or sudden death. We used Cox proportional hazard analysis to investigate associations of epilepsy and mortality. Results: There were 1,191,304 children followed for 13,994,916 person-years (median: 12) if which 9665 (0.8%) had epilepsy. Amongst CWE, 3.4% died. MR of CWE was 4.1 (95%CI 3.7-4.6)/1,000 person-years. CWE had an increased adjusted all-cause mortality (MRR 50.9,95%CI 44.8-57.7) compared to CWOE. Amongst the 330 deaths in CWE, 323 (98%) were natural, 7 (2%) non-natural, 80 (24%) epilepsy-related. MRR of non-natural deaths was 2.09 (95%CI 0.92,4.74, p = 0.08). Significance: Amongst CWE, 3.4% died during the study period. All-cause mortality rate in CWE was 4/1,000 person-years representing a fifty-fold increased mortality risk, after taking into account sex and socioeconomic status, compared to similarly aged children who did not have epilepsy. Causes of death mostly were not seizure-related. Non-natural death in CWE was uncommon.
Article
Purpose: To review the standard of clinical care of people with epilepsy (PWE) attending UK general practice after epilepsy was removed from the Quality and Outcomes Framework (QOF) in 2014. Method: The case notes of 324 people were reviewed against standards based on National Institute for Health and Care Excellence (NICE), Drug Safety Unit (DSU), and Medicines and Healthcare products Regulatory Agency (MHRA) guidelines. Results: Annual face-to-face review fell significantly (p = 0.021) after the removal of epilepsy from QOF in 2014. Clinical Commissioning Group (CCG) downloaded review rates fell significantly from 95% in 2010 to only 14% in 2016. One hundred and twenty seven (39%) people had seen their GP, and108 (33%) had not seen any doctor, in the past year. One hundred and seventy three (53%) were under specialist care. Forty nine percent not under specialist care had poor control. Two hundred and fifty four (78%) people were on ASM (Anti-Seizure Medication) associated with poor bone health, of these 41 (16%) were prescribed vitamin D. Fourteen women of childbearing age were taking sodium valproate, of whom only 5 (36%) had written confirmation of being counseled of the associated risks. Fifty six (17%) people were non-complaint with prescription collection, of which 66% had documented poor control. There was a discrepancy between actual face-to-face review rates and the review rates the CCG collected. Conclusion: This study reveals poor annual review rates for PWE in UK primary care, which have fallen further since the removal of epilepsy from QOF. Unmet needs persist for people with poorly controlled epilepsy not under specialist care, bone health, and the care of women of child bearing age. This study, along with previous work, brings into question the concept of shared care for PWE. Clinical Commissioning Groups should consider investing in the training and employment of GPwSIe (GP with Special Interest in epilepsy) and ENS (Epilepsy Nurse Specialists) to work in the community. The Government should examine re-introducing epilepsy back into QOF with measurable clinical targets and adequate remuneration.
Article
Purpose Undetected and prolonged epileptic seizures can result in hypoxic brain damage or death and occur most often when the victim is in bed alone or unsupervised. Sudden unexpected death in epilepsy may not always be preventable but it is believed that timely assistance with rescue medication and body re-positioning may overcome respiratory compromise in some cases. A novel algorithm based on a real time moving 9 s epoch, calculating 25 % percentage heart rate change and/or an oxygen saturation trigger level of <85 % was developed using photoplethysmography and incorporated into a prototype data storage device. Methods The algorithm was clinically evaluated in this multicentre trial in the detection of clinically significant epileptic seizures. A range of epileptic seizures and normal physiological events were recorded and classified by reference standard EEG Videotelemetry and time-synchronised event data recorded by the prototype device incorporating the pre-specified cut-off points prospectively and retrospective analysis of all events. Results 119 participants who were attending electroencephalographic (EEG) videotelemetry as part of their clinical management of their epilepsy consented to take part in the trial. 683 epileptic seizures (77 clinically significant seizures) and 2648 normal physiological events were captured. When using pre-specified cut-off point 25 % heart rate change and/or oxygen desaturation <85 % on the basis of one/other, the device showed a sensitivity of 87 % for detecting clinically significant seizures. False Alarm Rate 4.5 (24 h FAR), detection latency of 58 s using heart rate percentage change. Conclusions The results indicate that the novel algorithm can be used in detecting clinically significant seizures.
Article
Purpose Risk communication between clinicians and people with epilepsy (PWE) and their families is under researched. There is limited guidance about when and how to have these discussions. This paper explores the current evidence on quality of risk related conversations in epilepsy and suggests a concept of an evidence-based guideline for person centred structured risk communication. Methods A literature search of four electronic database, Ovid Medline, Ovid Embase, PUBMED, and CINAHL, was conducted by two independent reviewers using relevant search terms following the principals of the PRISMA guidance. No limits were applied. Supplementary searches included using backwards and forwards citation searching. A predesigned inclusion and exclusion criteria was administered to the identified results. Results From 376 results identified, 17 studies met the final criteria of which ten were quantitative, five qualitative and two mixed methods. Perspectives of PWE and clinicians were represented. Extracted data was clustered into three domains: communication initiation (e.g. timing, individual tailoring); communication methods (preference for face to face with neurologists); and communication content (acknowledging the anxiety produced by risk communication, the benefits of being self-aware, normalising risk etc.). No papers focused on conversation structure (e.g. helpful phrases), or the best locations to hold conversations. Conclusion More research is needed to develop structured communication of risk. An attempt has been made to put current evidence into this format. Clearer guidance will enhance clinicians’ confidence in communicating person centred epilepsy risk with PWE and their families thus improving outcomes.
Article
Full-text available
To study the circumstances of death in sudden death in epilepsy. Self referred bereaved relatives of patients with epilepsy who had died suddenly were interviewed with information obtained substantiated through other sources-namely, coroners' officers' reports, postmortem reports, previous medical records, and EEG reports. Of 34 cases, 26 were classified as sudden unexpected deaths in epilepsy (SUDEP). Twenty four of 26 cases of SUDEP were unwitnessed. Evidence indicative or suggestive of a seizure was found in most. In 11 of 26 the position of the head was such that breathing could have been compromised. Cases included both localisation related and idiopathic primary generalised epilepsy. Only three were in remission at the time of death. Most relatives expressed the view that they would have preferred to have known that epilepsy could be fatal. Although the deaths in question were largely unwitnessed, the available evidence suggested that most cases of SUDEP represented ictal or postictal seizure deaths, occurring in people with a history of generalised tonic clonic seizures, and in both primary generalised and localisation related epilepsy. These interviews highlight the needs of bereaved relatives and their sense of isolation in the face of an entirely unexpected and apparently unexplained loss.
Article
An audit of patients receiving antiepileptic drug therapy for epilepsy was carried out in 25 general practices in Glasgow. Patients were identified from computerized records of repeat prescriptions for antiepileptic drugs. Overall, 1052 (0.72%) of 145,609 screened patients had treated epilepsy. Only 5% were children, while 19% were over 65 years. Twenty-nine per cent were diagnosed by a neurologist, and in 24% no record was available of who had made the diagnosis. Fifty per cent had tonic-clonic seizures only. Partial seizures occurred in 39%, absences in 4%, and myoclonic jerks in 3%. In only 39% of case records was current seizure control documented. Seventy-four per cent and 41% of patients had surface electroencephalography and computerized tomographic brain scanning, respectively. In more than 80% of patients the presence or absence of birth injury, febrile convulsions in childhood, and a family history of epilepsy were not mentioned. Seventy-six per cent of patients were receiving anticonvulsant monotherapy. The most commonly prescribed drugs were carbamazepine (43%), phenytoin (34%), sodium valproate (22%) and phenobarbitone (15%). Eighty-four per cent had attended a hospital clinic with their epilepsy, and 19% had been admitted to hospital with seizures or complications. A standard record form for the assessment and follow-up of epileptic patients in general practice would help in providing optimal management and in facilitating the setting up of a shared-care programme.
Article
Inconsistent and inaccurate death certification, lack of agreed definitions, different terminology, and different understanding of the same terminology hamper research into mortality in epilepsy and result in national statistics that are difficult to interpret. A consensus in death certification and in classification of epilepsy-related deaths, including sudden unexpected death in epilepsy (SUDEP), is needed. Guidelines for classifying cases as SUDEP are proposed. Their aim is to allow uniformity and comparability between studies. These guidelines take into account the limits of the information usually available in this setting even when these deaths are investigated. The guidelines are complemented by those dealing with identified deaths in epidemiologic studies where data are lacking.
Article
Sudden Unexplained Death due to Epilepsy (SUDEP) is not uncommon. The incidence may be difficult to ascertain due to variations in reporting the cause of death investigated by coroners. To study this, we used a cuttings service to identify all cases of SUDEP reported in the UK press during 1992. These cases had been investigated by a number of different pathologists and coroners. Post-mortem reports, witness statements and other relevant information were examined in 40 cases. Inconsistencies were observed both in investigations performed and observations made at time of death. Varying degrees of detail concerning 'type' and history of epilepsy were found. In 70% of cases, type of epilepsy was either not known or not referred to. Similar inconsistencies were found with details of medication, position of body, toxicology reporting and detailed examination of organs, particularly the brain. Attributed cause of death varied considerably, with epilepsy stated as primary cause of death in less than half of the sample. Disparity was noted also in coroner's verdicts, with no distinct pattern emerging in relation to attributed cause of death. The wide variation in practice of individual coroners and pathologists in the investigation and registering of sudden deaths raises issues of quality assurance. As the majority of these deaths are unwitnessed, we rely on these investigations and the statements of officials in the process of registering deaths. If we are to build a profile of people who are at risk of SUDEP, epilepsy must be stated on the death certificate. Until this happens, many more of these deaths will go unrecorded.
Article
Patients with epilepsy may be subject to an increased risk of premature death from the underlying cause, or from the epilepsy itself. The extent and nature of this risk has been insufficiently investigated. Standard mortality ratios (SMRs) of patients with newly diagnosed epilepsy were determined in a prospective national population-based study. 1091 patients with newly diagnosed or suspected epilepsy were ascertained who were attending one of 275 UK general practices from 1984-1987. 1091 patients were classified after 6 months as definite epilepsy (564), possible epilepsy (228), febrile seizures (220), or not epilepsy (79). Over a median follow up of 6.9 years the SMR for patients with definite or possible epilepsy was 2.5 (95% CI 2.1-2.9), and 3.0 (2.5-3.7) for definite epilepsy. The SMR was highest during the first year after diagnosis 5.1 (3.8-6.5), declined to 2.5 (1.5-3.9) at 3 years, and 1.3 (0.7-2.0) at 5 years. The commonest causes of death were pneumonia (SMR 7.2), cancer (3.5), and stroke (3.7). The SMR for patients with idiopathic epilepsy was 1.6 (1.0-2.4), remote symptomatic epilepsy 4.3 (3.3-5.5), and acute symptomatic epilepsy 2.9 (1.7-4.5). Mortality in patients with newly-diagnosed epilepsy was high, mainly due to the underlying cause. The SMR for idiopathic epilepsy was also raised, suggesting that epilepsy per se may carry a small risk of death.
Article
In people with uncontrolled chronic epilepsy there is an excess mortality directly attributable to the epilepsy itself. This is largely due to accidental and non-accidental deaths occurring during or immediately after seizures. Most sudden unexpected deaths in epilepsy fall within the latter category. To acknowledge rather than conceal these deaths is essential before prevention strategies can be addressed.
Article
There are no data on prevalence or incidence of treated epilepsy, and no data on fertility of women with epilepsy from an unselected UK population. We used the General Practice Research Database to ascertain the incidence and prevalence of people with treated epilepsy in an unselected population of 2,052,922 people in England and Wales, and also age-specific fertility rates. We defined period prevalence of treated epilepsy as the number of people with epilepsy taking an antiepileptic drug per 100,000 people during 1995. The incidence of treated epilepsy was defined as the number of new cases of treated epilepsy per 100,000 people during the same period. We calculated fertility rates among women with treated epilepsy between 1991 and 1995 and compared these rates with the population rates for England and Wales in 1993. The period prevalence of treated epilepsy in 1995 was 5.15 per 1000 people (95% CI 5.05-5.25). The prevalence was lower in children (age 5-9 years 3.16 [2.86-3.48]; 10-14 years 4.05 [3.70-4.42]), and higher in older people (65-69 years 6.01 [5.50-6.57]; 70-74 years 6.53 [5.97-7.14]; 75-79 years 7.39 [6.73-8.11]); 80-84 years 7.54 [6.78-8.39]; 85 years and older 7.73 [6.98-8.66]). The incidence of treated epilepsy was 80.8 per 100,000 people (76.9-84.7). The incidence was lower in children (5-9 years 63.2 [50.5-79.1]; 10-14 years 53.8 [42.4-68.3]) and higher in older people (65-69 years 85.9 [68.5-107.3]; 70-74 years 82.8 [65.0-105.2]; 75-79 years 114.5 [116.9-179.2]; 80-84 years 159 [125.2-202.6]; > or = 85 years 135.4 [100.4-178.7]). Fertility was lower among women with treated epilepsy, with an overall rate of 47.1 livebirths per 1000 women aged 15-44 per year (42.3-52.2), compared with a national rate of 62.6 in the same age-group. The standardised fertility ratios were significantly lower between the ages of 25 and 39 years in women with epilepsy (p<0.001). Compared with previous studies, we found that the incidence of epilepsy was higher in elderly people and lower in children. The prevalence rates also increase with age. Women aged 25-39 years with treated epilepsy have significantly lower fertility rates than those in the general population. Research is needed to identify any potentially preventable causes for the low fertility rates.
Article
Sudden unexpected death is substantially more common in people with epilepsy than in the general population. Our objective was to investigate the association between some clinical variables and sudden unexpected death in epilepsy (SUDEP) to identify risk factors. This nested case-control study was based on a cohort of people aged between 15 and 70 years, who, during 1980-89, had been admitted to and discharged with a diagnosis of epilepsy from any hospital in the county of Stockholm. The study population was followed up through the National Cause of Death Register until Dec 31, 1991. Cases were individuals who had died, with a diagnosis of epilepsy registered on the death certificate, and who after review of medical and necropsy records were found to meet our SUDEP criteria. Three control participants, who were living epilepsy patients matched for age and sex, were selected from the same cohort for each case. All medical records were examined. Clinical data were collected and analysed on a predesigned protocol. 57 SUDEP cases were included, of whom 91% had undergone necropsy. The relative risk of SUDEP increased with number of seizures per year. The estimated relative risk was 10.16 (95% CI 2.94-35.18) in patients with more than 50 seizures per year, compared with those with up to two seizures per year. The risk of SUDEP increased with increasing number of antiepileptic drugs taken concomitantly--9.89 (3.20-30.60) for three antiepileptic drugs compared with monotherapy. Other major risk factors were early-onset versus late-onset epilepsy (7.72 [2.13-27.96]), and frequent changes of antiepileptic drug dosage compared with unchanged dosage (6.08 [1.99-18.56]). The association between SUDEP risk and early onset, and SUDEP risk and seizure frequency, was weaker for female than for male patients, whereas frequent dose changes showed a stronger association in female patients. Our data suggest that SUDEP is a seizure-related event, although the pathophysiological substrate that predisposes individuals to SUDEP may be established at an early age, and there may be some sex differences. Improvement of seizure control and possibly the avoidance of polytherapy may be ways to reduce the risk of SUDEP.
National Statement of Good Practice for the Treatment and Care of People who have Epilepsy. Joint Epilepsy Council
  • S Frost
  • P Crawford
  • S Mera
  • B Chappell
Frost S, Crawford P, Mera S and Chappell B (2002) National Statement of Good Practice for the Treatment and Care of People who have Epilepsy. Joint Epilepsy Council. Available via www.jointepilepsycouncil.org.uk.
Epilepsy -death in the shadows
CMO (2001) Epilepsy -death in the shadows. In: Annual Report 2001, Chief Medical Officer, Department of Health, London.