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Modified Dachengqi Decoction Combined with Conventional Treatment for Treating Acute Exacerbation of Chronic Obstructive Pulmonary Disease: A Systematic Review Based on Randomized Controlled Trials

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Objective. This study intended to systematically evaluate the effectiveness and safety of modified Dachengqi Decoction (MDD) combined with conventional treatment for treating acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Method. An extensive search was performed within 6 English and Chinese electronic databases from inception to April 2012. Methodological quality was assessed according to Cochrane risk of bias assessment. Data were analyzed using Review Manager 5.1. Results. A total of 16 studies (involving 1112 patients) were included. The result showed that MDD and its modification combined with routine treatment were more effective in improving FEV1%pred, enhancing the significant effectiveness, reducing PCO2, and shortening duration of mechanical ventilation. Adverse events were reported in two trials with symptom of diarrhea, while no serious adverse effect was reported. Conclusion. Modified Dachengqi Decoction appears to be effective for treating AECOPD. However, more regular designed RCTs are needed because of insufficient methodological problems.
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Evidence-Based Complementary and Alternative Medicine
Volume , Article ID , pages
http://dx.doi.org/.//
Review Article
Modified Dachengqi Decoction Combined with
Conventional Treatment for Treating Acute Exacerbation of
Chronic Obstructive Pulmonary Disease: A Systematic Review
Based on Randomized Controlled Trials
Ruohan Wu, Zheng Fengjie, Yuhang Li, Sun Yan, Liu Miao, Wang Tan, and Zhang Jinchao
School of Preclinical Medicine, Beijing University of Chinese Medicine, 11 North Sanhuan East Road, Chaoyang District,
Beijing 100029, China
Correspondence should be addressed to Yuhang Li; liyuhang@bucm.edu.cn
Received  January ; Revised  February ; Accepted  February 
Academic Editor: Zhaoxiang Bian
Copyright ©  Ruohan Wu et al. is is an open access article distributed under the Creative Commons Attribution License,
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Objective. is study intended to systematically evaluate the eectiveness and safety of modied Dachengqi Decoction (MDD)
combined with conventional treatment for treating acute exacerbation of chronic obstructive pulmonary disease (AECOPD).
Method. An extensive search was performed within  English and Chinese electronic databases from inception to April .
Methodological quality was assessed according to Cochrane risk of bias assessment. Data were analyzed using Review Manager ..
Results. A total of  studies (involving  patients) were included. e result showed that MDD and its modication combined
with routine treatment were more eective in improving FEV1%pred, enhancing the signicant eectiveness, reducing PCO2,
and shortening duration of mechanical ventilation. Adverse events were reported in two trials with symptom of diarrhea, while
no serious adverse eect was reported. Conclusion. Modied Dachengqi Decoction appears to be eective for treating AECOPD.
However, more regular designed RCTs are needed because of insucient methodological problems.
1. Introduction
Global strategy for the diagnosis, management, and preven-
tion of chronic obstructive pulmonary disease (COPD) []for
the rst time revised the goal of the treatment of COPD into
relief symptoms rapidly, and reduces risk of patients’ health,
such as recurrent episodes or rapid decrease of pulmonary
function []. erefore, how to control the symptoms and
reduce the frequency of disease onset became the research
emphasis in academic eld.
COPD belongs to the category of “lung distention” in
Chinese medicine. Syndrome of phlegm-heat obstructing
in the lung is one of the most common syndromes in the
acutestage.emainclinicalfeaturesincludeyellowsputum,
dyspnea, thirsty, and constipation []. “Interior and Exterior
Relationship between the Lung and Large Intestine” is one
of the most typical viscera correlation theories. It describes
the corelationship of viscera, meridian, physiological relation,
and pathological changes, which is the foundation for
further clinical treatment of AECOPD by using purgative
drugs. Many domestic and foreign researches [,]found
that COPD patients have digestive tract symptom such as
abdominal distension, constipation besides cough, wheezing,
phlegm, and dyspnea. So, it is viable to do research on using
purgativedecoctioninthetreatmentofAECOPD.
Dachengqi decoction, a representative recipe of dredging
intestines in Treatise on Febrile Diseases (Shang Han Lun),
hasbeenwidelyusedtotreatYangmingFushiSyndrome.
It is composed by Rheum, Magnolia ocinalis,immature
bitter orange, and Mirabilite. In a recent study, it eectively
treated critical patients with gastroenteric function disorder,
andreducetheincidenceandfatalityofMODS[].
is study aimed to determine the eects and safety of
purgative decoction on pulmonary function, artery blood gas
analysis, ventilator weaning time in patients with AECOPD
by systematically evaluating the eectiveness of oral
Evidence-Based Complementary and Alternative Medicine
decoctions, or Chinese patent medicine based on Dachengqi
Decoction plus conventional treatment compared with
western medicine alone in the treatment of AECOPD.
2. Materials and Methods
2.1. Search Strategy. We searched the Chinese literature from
CNKI,CBM,VIP,WANFANG,andforeignliteraturefrom
PubMedandCochranelibrary.esearchingwasfromthe
inception of the databases to April . We utilized the
medical subject headings “COPD” or “chronic obstructive
pulmonary disease” and “Chinese medicine” in PubMed,
Cochrane, while we use “COPD” or “chronic obstructive
pulmonary disease” and “Dachengqi Decoction” or “Radix et
Rhizoma Rhei” or “Natrii Sulfas” or “Fructus Aurantii Immat-
urus” or “Cortex Magnoliae ocinalis” in Chinese database.
2.2. Inclusion Criteria. Inclusion criteria were the following:
() RCTs in English or Chinese involving decoctions based on
Dachengqi Decotion compared with placebo, no treatment,
or conventional treatment without Chinese medicine as
controls. () Patients must be aged  years or over and of any
gender or ethnic origin. Patients are diagnosed with COPD
in the severe stage with or without respiratory failure. COPD
is dened as “e Global Initiative for Chronic Obstruc-
tive Lung Disease (GOLD)” which is pulmonary function
includes FEV1%pred <% and FEV1/FVC% <% aer
using bronchodilator. () Primary outcome measures were
pulmonary function (FEV1%pred, FEV1/FVC%), safety, and
signicant eectiveness based on clinical symptoms relief.
e signicant eectiveness was dened as the symptoms
scores improvement rate % according to “the guide for
clinical trials of new drugs” []. Clinical symptoms involved
cough, cough-up phlegm, dyspnea, constipation, and wheeze.
Secondary outcome measures were artery blood gas analysis
(PO2,PCO
2) and duration of mechanical ventilation.
2.3. Data Extraction. Study characteristics included trial
design, sample size, mean and standard deviation of partic-
ipants’ age, and history of COPD; severity of COPD dier-
entiation of syndrome, methodological quality, intervention,
outcome measures, treatment duration and follow-up period,
and adverse events were extracted to a predened form and
checked by a second reviewer.
2.4. Risk of Bias. e methodological quality of the included
studies was independently assessed by  authors using
theCochraneriskofbiasassessment[]. Assessment of
Cochrane risk of bias consists of seven domains: () random
sequence generation () allocation concealment () blinding
of participants and personnel () blinding of outcome assess-
ment () incomplete outcome data () selective reporting and
() other bias. For each domain, evaluation was by denoting
“yes”-adequate (low risk of bias); “no”: inadequate (high risk
of bias); or “unclear”: unclear or not used (uncertain risk of
bias) according to the descriptions of the method in each
study. Any disagreement was resolved by discussion with a
third reviewer.
2.5. Data Analysis. Meta-analysis was performed using Rev-
Man .. For categorical data, we used risk ratios (RR),
while for continuous data, mean dierences (MD) were
calculated and expressed in eect value and % condence
(CI). Heterogeneity was calculated by 𝑋2and 𝐼2statistics.
When heterogeneity inspection result showed signicant
heterogeneity (𝑃 < 0.05), we used random eects model,
otherwise we applied xed eects model.
3. Results
3.1. Overview of Included Studies. We initially identied 
citations, aer screening for potential relevance,  full papers
[] were assessed for possible inclusion (Figure ). All
studies were conducted in China. e characteristics of the
included studies are summarized in Tab l e  . e dierent
compositions of Chinese herbal formula MDD are presented
in Table . e  studies involved a total of  acute COPD
patients, and  studies were included in meta-analysis. All
studies reported diagnosis standard. All  studies were about
Chinese medicine combined with western medicine rou-
tine treatment compared with conventional treatment alone
(Table ). Fieen studies [,,]wereabout
oral decoction combined with western medicine routine
treatment. Two [,] studies used Chinese patent medicine
based on MDD.
3.2.AssessmentofRiskofBias. Information of sequence gen-
eration was adequate for ve studies at low risk of bias [,,
,,] and inadequate for seventeen studies with unclear
risk of bias [,,,]. All the ve studies
reported that they used random number table for sequence
generation. Allocation concealment was not reported in all
studies (no). Blinding of participants, physicians, and study
personnel was not reported in these studies, but all studies
were carried without placebo, so they were of high risk of
bias.Noneofthestudiesreportedlosttofollowup,withdraw
and dropo; thus, the risk of bias of incomplete outcome
data over all studies was graded as unclear. As far as selective
reporting was concerned, for we could not nd any pre-
dened outcome measurements in all the included studies
we classied them as unclear risk of bias. Due to the limited
number of included studies, we were not able to implement
funnel plot.
3.3. Outcome Measure
3.3.1. Pulmonary Function. FEV1%pred was reported in 
articles [,,,,](Figure )andFEV
1/FVC% was
reported in  studies, respectively [,,,,](Figure ).
Signicant dierences showed in FEV1%pred. Decoction
group concludes ve trials (MD ., %CI . to .).
SimilarchangeswereshowninFEV
1/FVC% (MD ., %CI
. to .).
3.3.2. Signicant Eectiveness. MDD group showed higher
percentage of eectiveness when compared with non-MDD
Evidence-Based Complementary and Alternative Medicine
T : Characteristics of included trials.
Study ID Sample CM
syndrome Intervention Controlled Couse Adverse event Outcome measures
Fang and Shi,
 []
T: /
C: / NS MDD
Aminophylline . g qd,
Methylprednisolone  mg
qh, Cefoperazone and
Sulbact am  g qh,
Mucosolvan  mg qh
D NS BGA, DMV
Fu,  []T: /
C: / SPHOL MDD Conventional treatment D NS PF
Guo and Liang,
 []
T: /
C: / SPHOL MDD Mucosolvan  mg and
conventional treatment D NS ER
Guo and Zhang ,
 []
T: /
C: / NS MDD Conventional treatment D NS PF, BGA, ER
Li,[]T: /
C: / SPHOL Tongsai g r a nu l e
gtid
Aminophylline . g,
antibacterial D NS Inammation
factor
Li et al., 
[]
T: /
C: / SPHOL MDD Conventional treatment D NS ER
Li,[]T: /
C: / SPHOL MDD
Cefaclor capsules . g tid,
Azithromycin tablets . g ,
Mucosolvan   mg tid.
D YSE PF, BGA, ER
Liang,  []T: /
C: / NS MDD Conventional treatment D NS PF, ER
Liu et al., 
[]
T: /
C: / NS MDD Conventional treatment D NS Oine success rate
Lu,  []T: / C:
/ SPHOL MDD Conventional treatment D NS PF, BGA, ER
Mao,  []T: /
C: / NS Tongfupaiqi
mixture Conventional treatment D YES PF
Meng,  []T: /
C: / SPHOL MDD Conventional treatment D NS PF, ER
Pang,[]T: /
C: / SPHOL MDD Conventional treatment D NS BGA
Peng and Li,
 []
T: /
C: / SPHOL MDD Conventional treatment D NS ER
Shi et al., 
[]
T: /
C: / NS MDD Conventional treatment D NS DMV
Zhang,  []T: /
C: / SPHOL MDD Conventional treatment D NS PF, ER
T: treatment; C: control; NS: not specied; conventional treatment: antibiotics, antispasmodic, expectorant (the drug is unknown); SPHOL: syndrome of
phlegm-heat obstructing lung; BGA: blood gas analysis. PF: pulmonary function; ER: eective rate; DMV: duration of mechanical ventilation.
formula group (RR ., %CI . to .) [,,,,]
(Figure ).
3.3.3. Blood Gas Analysis. PO2was reported in  studies
[,,,,,](Table )andPCO
2was predicted in 
studies [,,,,](Table ). ere was an improvement
in PO2and a reduction in PCO2when comparing modied
Dachengqi Decoction plus conventional treatment to con-
ventional treatment alone.
3.3.4. Duration of Mechanical Ventilation. Duration of
mechanical ventilation (days) was reported in  studies
[,]. Recovery time of MDD group was shorter than that
of the conventional treatment group (MD .d, %CI
.d to .d).
3.3.5. Safety. Two studies [,] reported adverse events.
Both trials reported adverse reaction as diarrhea. Other trials
did not report it.
4. Discussion
isstudyfocusesonevaluatingtheeectivenessandsafety
of modied Dachengqi Decoction for AECOPD based on
pulmonary function, blood gas analysis, and eective rates
when compared with conventional treatment group. Based
on the study of the sixteen studies, DMM may have positive
eect on improving patients pulmonary function, improving
thesymptoms,enhancingthepartialpressureofoxygen,
decreasing the partial pressure of carbon dioxide, and
shortening the duration of mechanical ventilation. As with
Evidence-Based Complementary and Alternative Medicine
T : e compositions of MDD.
Study ID Composition of formula
Fang and Shi,  []MDD (Radix et Rhizoma Rhei, Fructus Aurantii Immaturus, Cortex Magnoliae ocinalis,Trichosanthis,
Semen Armeniacae Amarum, Radix Glycytthizae, Semen Raphani.)  mL bid
Fu,  [] MDD (Radix et Rhizoma Rhei, Fructus Aurantii Immaturus, Cortex Magnoliae ocinalis)qd
Guo and Liang,  []MDD (Radix et Rhizoma Rhei, Fructus Aurantii Immaturus, Cortex Magnoliae ocinalis, Rhizoma Pinelliae,
Semen R aphani, Radix Astragali)  mL bid
Guo and Zhang ,  []MDD (Gypsum Fibrosum, Radix Scutellariae, Semen Armeniacae Amarum, Fructrs Trichosanthis), mL
bid
Li,[] Tongsai granule (Radix et Rhizoma Rhei, Herba Ephedrae, Semen Lepidii, Bulbus Fritillariae Cirrhosae)  g tid
Li et al.,  []MDD (Radix et Rhizoma Rhei, Fructus Aurantii Immaturus, Natrii Sulfas, Fructrs Trichosanthis, Semen
Raphani, Semen Lepidii)  mL bid
Li,[]
MDD (Radix et Rhizoma Rhei  g , Gypsum Fibrosum  g , Fructrs Trichosanthis  g, Semen Armeniacae
Amarum  g, Radix Scutellariae g, Semen Lepidii  g, Herba Houttuyniae g, Bulbus Fritillariae
unbergii  g, Radix Glycytthizae  g)  mL tid
Liang,  []MDD (Radix et Rhizoma Rhei  g, Fructus Aurantii Immaturus  g, Cortex Magnoliae ocinalis  g , Radix
Scutellariae  g, Rhizoma Pinelliae g, Pericarpium Citri Reticulatae  g, Radix Glycytthizae  g)  mL bid
Liu et al.,  []MDD (Radix et Rhizoma Rhei, Fructus Aurantii Immaturus, Cortex Magnoliae ocinalis,Fructrs
Trichosanthis, Semen Armeniacae Amarum, Poria, Radix Glycytthizae)  mL bid
Lu,  []MDD (Radix et Rhizoma Rhei  g, Fructrs Trichosanthis  g, Semen Armeniacae Amarum  g, Semen
Cannabis  g, Radix Scutellariae  g , Herba Houttuyniae  g, R adix Glycytthizae  g)   mL bid
Mao,  []TongFuPaiQi mixture (Radix et Rhizoma Rhei, Semen Raphani, Semen Persicae, Radix Paeoniae Rubra)  mL
tid
Meng,  []MDD (Radix et Rhizoma Rhei, Fructrs Trichosanthis, Semen Armeniacae Amarum Gypsum Fibrosum),
 mL bid
Pang,[]MDD (Radix et Rhizoma Rhei, Cortex Magnoliae ocinalis, Fructrs Trichosanthis, Semen Armeniacae
Amarum, Rhizoma Pinelliae, Gypsum Fibrosum, Radix Astragali, Radix Glycytthizae)  mL bid
Peng and Li,  [] MDD (Radix et Rhizoma Rhei  g, Natrii Sulfas g, Semen Lepidii  g, Radix Scutellariae  g) qd
Shietal.,[]MDD (Radix et Rhizoma Rhei, Fructus Aurantii Immaturus, Fructrs Trichosanthis, Semen Armeniacae
Amarum, Semen Raphani, Radix Glycytthizae)  mL bid
Zhang,  []MDD (Radix et Rhizoma Rhei, Cortex Magnoliae ocinalis, Fructrs Trichosanthis, Semen Armeniacae
Amarum, Rhizoma Pinelliae, Gypsum Fibrosum, Radix Scutellariae)  mL bid
T : Outcome measures for PO(mmHg).
Study Treatment (m ±s) Control (m ±s) Mean dierence (% CI) 𝑃value
Fang and Shi,  []±  ± . (., .) 𝑃 = 0.0004
Guo and Liang,  [].±.     .   ±. . (., .) 𝑃 = 0.0007
Li,[] . ±. . ±.    .   ( ., .) 𝑃 = 0.5452
Lu,  [].±. . ±. . (., .) 𝑃 = 0.34
Meng,  [].±. . ±. . (., .) 𝑃 < 0.0001
Pang,[].±. . ±. . (., .) 𝑃 < 0.0001
Meta . (., .) 𝑃 < 0.00001
any meta-analysis, heterogeneity must be considered. We
found signicant heterogeneity in the outcome measure for
FEV1%pred, but the heterogeneity in the outcome measure
for FEV1/FVC and clinical symptom relief was very low.
Only two studies [,] reported a total of three adverse
events of diarrhea,which suggests that the MDD for COPD
is well tolerated. However due to the incomplete evaluation,
safetyofDMMshouldbeacceptedmorecautiously.e
results need to be monitored rigorously in the future.
Some systematic review [,]hasindicatedabenet
of using Chinese herb such as oral ginseng formulae for the
management of stable COPD which belongs to deciency
syndrome according to TCM (traditional Chinese medicine)
theory. Also, there were many studies showing that Chinese
medicine had become more and more important in treating
COPD/AECOPD []. ere have been many randomized
controlled trials indicating that herbs can release clinical
symptoms and improve quality of life.
MDDisnotavailableforitisnotwidelyusedintreating
COPD/AECOPD, but some studies []foundthatCOPD
patients have digestive tract symptom such as abdominal
distension, constipation besides cough, phlegm, and dyspnea.
us,itispracticaltouseMDDintreatingCOPDwhich
belongs to excess syndrome especially with constipation
Evidence-Based Complementary and Alternative Medicine
T : Outcome measures for PCO(mmHg).
Study Treatment (m ±s) Control (m ±s) Mean dierence (% CI) 𝑃value
Fang and Shi,  []67 ± 11 74 ± 13 .   (−14.78,0.78) 𝑃 = 0.0852
Guo and Liang,  []41.3 ± 5.13 48.26 ± 5.34 . (−9.61, −4.31) 𝑃 < 0.0001
Lu,  []41.76 ± 2.1 42.76 ± 2.39 . (−2.56,0.56) 𝑃 = 0.2184
Meng,  []65.7 ± 6.3 81.7 ± 8.1 . (−19.67, −12.33) 𝑃 < 0.0001
Pang,[]57.54 ± 6.9 62.36 ± 5.76 . (−7.57, −2.07) 𝑃 = 0.001
Meta . (−5.44, −3.17) 𝑃 < 0.00001
622 of records were identied through
database searching
377 of records aer duplicates were
removed 91 full-text articles were excluded with
reason:
286 of full-text articles were assessed for
eligibility
16 of RCTS were included
qualitative synthesis
12 RCTS were included in quantitative
synthesis (meta-analysis)
270 of full-text articles were excluded,
with reasons
(1)eory contents (𝑛= 57)
(2) Reviews (𝑛= 58)
(3) Case experience (𝑛= 44)
(4) No Dachengqi Decoction (𝑛= 73)
(5) External therapy (𝑛= 33)
(6) COPD with other diseases (𝑛= 5)
Duplicated papers (𝑛 = 23)
F : Study selection process.
symptoms in TCM. e theory of “Interior and Exterior
Relationship between the Lung and Large Intestine” is one of
the most important theories in traditional Chinese Medicine
which is of great value in the clinical practice. Also some
studies found that “catharsis large intestine” can decrease T
cells and enhance the number of serum T cells and aect the
balance of CD+and CD+and can have eects on airway
remodeling of lung in rats with COPD [].
Also, there are several methodological limitations. First,
all trials involved were of low quality. No study applied
placebo as control; thus, the patients and physicians were
not blinded. Although all the trials reported randomization,
only  studies reported sequence generation and no study
addressed the issue of allocation concealment. e quality
of studies published in Chinese is majorly poor, and some
scholars indicated that China generated virtually no negative
studies at all []. erefore, the ndings of the meta-
analyses should be interpreted with caution. Due to the
time limitation, we did not contact the original authors, and
furtherinformationforbetterevaluationofriskofbiaswas
inadequate.
Second,alltheincludedstudieswerepublishedinChi-
nese journals, and all the results were positive. What is more,
study number was not enough to implement funnel plot,
Evidence-Based Complementary and Alternative Medicine
Study or subgroup MDD Control Wei g h t Mean dierence Mean dierence
Mean SD Total Mean SD Total IV, random, 95%CI IV, random, 95%CI
Fu, 2010 50.3 9.69 30 44.26 10.88 30 16.9%6.04 [0.83, 11.25]
Li, 2009 76.23 5.32 30 74.45 5.25 30 22.1%178 [0.89, 4.45]
Liang, 2011 50.3 9.69 30 41.95 10.89 30 16.9%8.35 [3.13, 13.57]
Lu, 2010 63.53 3.83 16 62.02 4.08 16 21.9%1.51 [1.23, 4.25]
Mao, 2010 74.61 6.68 52 64.95 6.63 48 22.2%9.66 [7.05, 12.27]
Total (95%CI) 158 154 100.0%5.30 [1.48, 9.12]
Heterogeneity: Tau2= 15.36, Chi2= 25.73, df=4( ), and I2=84%
Test for overall eect: ( )
0 10 20
20 10
Control Experimental
F : Forest plot of comparison: FEV1%pred (%).
Study or subgroup MDD Control Wei g h t Mean dierence Mean dierence
Mean SD Total Mean SD Total IV, random, 95 %CI IV, random, 95 %
Fu, 2010 58.81 9.6 30 56.3 6.81 30 9.8%2.51 [1.70, 6.72]
Li, 2009 72.27 5.13 30 70.98 5.18 30 25.7%1.29 [1.32, 3.90]
Liang, 2011 58.92 9.42 30 57.3 7.52 30 9.4%1.62 [2.69, 5.93]
Lu, 2010 65.17 2.4 16 64.09 2.9 16 51.3%1.08 [0.76, 2.92J
Zhang, 2011 58.9 13.1 32 51.8 14.1 30 3.8%7.10 [0.31, 13.89]
Total (95%CI) 138 136 100.0%1.55 [0.23, 2.87]
Heterogeneity: Tau2= 0.00, Chi2= 3.06, df=4(
Test for overall eect: ( )
024
Favours control Favours MDD
42
), and I2=0%
F : Forest plot of comparison: FEV1/FVC% (%).
so there might be a potential publication bias. We could
notruleoutthesystematicerrorbecausethesamplesize
of all studies was limited. So the clinical eect might be
exaggerated. Larger sample RCTs are needed in the future for
accurate results.
ird,allthedecoctionsincludedintheresearchwere
based on Dachengqi Decoction, but the herbs and the
dosages were dierent in each study. is might be the
main reason leading to the signicant heterogeneity. We can
see in the research that all the studies except six pointed
out that the syndrome of phlegm-heat obstructing lung is
appropriate for MDD. Determination of treatment based on
pathogenesis obtained through dierentiation of symptoms
is one of the most important characteristics in Chinese
Medicine, so modication according to symptoms is needed
during the treatment. Herbs of cold nature such as Gypsum
Fibrosum or Radix Scutellariae are used to clear heat while
diminishing sputum herbs such as Fructrs Trichosanthis,
Semen Lepidii, and Herba Houttuyniae are commonly used
in patients with abundance phlegm on the basic of Dachengqi
Decoction.
Despite of the methodological weakness and potential
risk of bias, the data from the  included studies illustrated
that MDD combined with conventional treatment may
have better eectiveness than conventional treatment alone,
especially in improving FEV1%pred, enhancing signicant
eectiveness, reducing PCO2, and shortening duration of
mechanical ventilation. e study suggests that MDD could
improve airway obstruction and relieve respiratory failure so
as to improve prognosis.
5. Conclusion
Modied Dachengqi Decoction appears to be eective for
treating AECOPD. However, more well-designed and large
sample RCTs are needed in the future due to the insucient
methodological problems of existing studies.
Conflict of Interests
e authors declare that there is no conict of interests.
Evidence-Based Complementary and Alternative Medicine
Study or subgroup MDD Control Weight Risk ratio Risk ratio
Events Total Events Total M-H, random, 95%CI M-H, random, 95%CI
Fu, 2010 21 30 12 30 20.0%1.75 [1.06, 2.88]
Guo and Liang,
2011 28 30 16 30 40.7%1.75 [1.24, 2.48]
Li, 2009 22 30 15 30 28.3%1.47 [0.97, 2.23]
Lu, 2010 5 21 3 21 2.9%1.67 [0.46, 6.10]
Peng and Li, 2009 10 30 8 30 8.1%1.25 [0.57, 2.73]
Total (95%CI) 141 141 100.0%1.62 [1.30, 2.02]
Total events 86 54
Heterogeneity: Tau2= 0.00, Chi2= 0.94, df = 4 ( ), and I2=0%
Test for overall eect: ( )
0.5 0.7 1 1.5 2
Control Experimental
F : Forest plot of comparison: therapeutic eect of syndrome.
Authors’ Contribution
R.WuandY.Liequallycontributedtothispaper.
Acknowledgments
e authors particularly thank Professor J. P. Liu and Asso-
ciated Professor Y. T. Fei from the Centre for Evidence-
based Chinese Medicine, Beijing University of Chinese
Medicine, for their great supports in this study. is study was
funded by the China National Key Basic Research Plan (no.
CB).
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... 6,7 In addition, CHM is relatively well-tolerated in AECOPD patients. 8 Previous Meta-analyses [9][10][11] have shown that a combination of CHM and conventional western medicine (CWM) is more effective than CWM alone for treating AECOPD. However, most original studies contain no placebo controls and have a high risk of bias (e.g., because of unclear randomization methods, lack of blinding, and lack of allocation concealment), which may affect the validity and credibility of the findings. ...
... RCTs with large sample sizes and longterm follow-ups are needed to confirm the effect of CHM on AECOPD. Previous Meta-analyses [9][10][11] indicated that CHM can improve pulmonary function, arterial blood gas results, and clinical efficacy for patients with AECOPD. Our results are consistent with these previous findings. ...
... Our results are consistent with these previous findings. Notably, one Meta-analysis 9 that assessed the efficacy of Dachengqi decoction for AECOPD showed that the clinical efficacy of Dachengqi decoction plus conventional treatment was approximately 1.62 times that of conventional treatment alone, an effect greater than that found in the present study. This difference between the two studies may be related to inconsistent judgment criteria of the clinical effectivity rate outcome. ...
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Objective: To systematically evaluate the efficacy and safety of Chinese herbal medicine (CHM) combined with conventional Western Medicine (CWM) on acute exacerbation of chronic obstructive pulmonary disease (AECOPD) based on high-quality randomized placebo-controlled trials. Methods: We searched PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure Database, Chinese Biomedical Literature Database, China Science and Technology Journal Database, and Wanfang databases for randomized placebo-controlled trials of CHM treatment for AECOPD from inception to June 4, 2021. The Cochrane Collaboration's tool and the Grading of Recommendations, Assessment, Development and Evaluation were used to assess the risk of bias and the evidence quality of the included studies. Revman 5.3 software was used for Meta-analysis. Results: A total of 9 trials involving 1591 patients were included. The Meta-analysis showed that based on CWM treatment, CHM group had significant advantages over the placebo group in ameliorating clinical total effective rate [ = 1.29, 95% (1.07, 1.56), = 0.007, low quality] and TCM symptom scores [ = -2.99, 95% (-4.46, -1.53), < 0.0001, moderate quality], improving arterial blood gas results [PaO: = 4.51, 95% (1.97, 7.04), = 0.0005, moderate quality; PaCO: = -2.87, 95% (-4.28, -1.46), < 0.0001, moderate quality], reducing CAT scores [ = -2.08, 95% (-2.85, -1.31), < 0.000 01, moderate quality],length of hospitalization [ = -1.87, 95% (-3.33, -0.42), = 0.01, moderate quality], and acute exacerbation rate [ = 0.60, 95% (0.43, 0.83), = 0.002, moderate quality]. No serious CHM-related adverse events were reported. Conclusions: The current evidence indicates that CHM is an effective and well-tolerated adjunct therapy for AECOPD patients receiving CWM. However, considering the high heterogeneity, this conclusion requires confirmation.
... Findings from this review are comparable with previous systematic reviews that evaluated Chinese herbal medicine combined with RP for AECOPD [5,34]. These reviews also evaluated lung function, arterial blood gases, and clinical effective rate and the study participants were diagnosed with the Chinese medicine syndrome, phlegm-heat obstructing the Lung. ...
... Tan re qing injection combined with pharmacotherapy improved lung function, clinical efficacy, and arterial blood gas and shortened the length of hospital stay compared with pharmacotherapy [5]. In the other review 16 studies used Da cheng qi decoction combined with pharmacotherapy and all outcomes were improved (lung function, clinical efficacy, and arterial blood gas) [34]. ...
... Tan re qing injection is also commonly used; however it is given by injection and not widely used outside of China. The other review used Da chenq qi decoction [34]. This herbal formula is not used or recommended to treat AECOPD, unless the patient has accompanied digestive tract symptoms such as abdominal distension and constipation. ...
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Objective. To evaluate the efficacy and safety of Weijing decoction combined with routine pharmacotherapy (RP) for the treatment of acute exacerbations of chronic obstructive pulmonary disease (AECOPD). Methods. Randomized controlled trials (RCT) evaluating Weijing decoction for AECOPD were included. English, Chinese, and Japanese databases were searched from their respective inceptions to June 2013. The methodological quality was assessed according to the Cochrane Collaboration's risk of bias tool. All data were analyzed and synthesized using RevMan 5.2 software. Results. Fifteen (15) studies involving 986 participants were included. Participants were diagnosed with COPD in the acute exacerbation stage. In addition, most of studies reported that they included participants with the Chinese medicine syndrome, phlegm-heat obstructing the Lung. Weijing decoction combined with RP improved lung function (forced expiratory volume in one second; FEV1), arterial blood gases (PaO2 and PaCO2), clinical effective rate, and reduced inflammatory biomarkers (TNF-α and IL-8) when compared with RP alone. No severe adverse events were reported in these studies. Conclusions. Weijing decoction appeared to be beneficial for AECOPD and well-tolerated when taken concurrently with RP, such as antibiotics, bronchodilators (oral and inhaled), and mucolytics.
... Recently, several systematic reviews have been conducted, indicating the potential effectiveness of Chinese herbal medicine in COPD [18][19][20][21][22][23][24][25]. However, the efficacy remains inconclusive due to low quality of studies. ...
... COPD is one of the leading causes of morbidity and mortality worldwide; its economic and social burdens are substantial and increasing [42][43][44]. Several systematic reviews have shown the therapeutic potential of herbal medicine for COPD [18][19][20][21][22][23][24]. However, no systematic review was conducted using the pulmonary function as the primary outcome. ...
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Herbal medicine (HM) as an adjunct therapy has been shown to be promising for the chronic obstructive pulmonary disease (COPD). However, the role of herbs in COPD remains largely unexplored. In this present study, we conducted the systematic review to evaluate the efficacy of herbs in COPD. 176 clinical studies with reporting pulmonary function were retrieved from English and Chinese database. Commonly used herbs for acute exacerbations stage (AECOPD) and stable COPD stage (SCOPD) were identified. A meta-analysis conducted from 15 high quality studies (18 publications) showed that HM as an adjunct therapy had no significant improvement in pulmonary function (FEV1, FEV%, FVC, and FEV1/FVC) compared to conventional medicine. The efficacy of the adjunct HM on improving the arterial blood gas (PaCO2 and PaO2) for AECOPD and SCOPD remains inconclusive due to the heterogeneity among the studies. However, HM as an adjunct therapy improved clinical symptoms and quality of life (total score, activity score, and impact score of St. George's Respiratory Questionnaire). Studies with large-scale and double-blind randomized controlled trials are required to confirm the role of the adjunct HM in the management of COPD.
... TCMs differ from therapeutics based on single-chemical entities. A number of herbal medicines and ancient TCM prescriptions are novel therapeutic regimens against COPD or asthma [18][19][20][21]; naturalb 2 AR agonists or antagonists participate in the regulation process, and TCM prescription compatibility enhances the regulation pathway more effectively [22]. ...
... However, large-sample RCTs validating these findings are lacking. 28 Rhubarb is a Chinese herb that has been used for centuries to treat intestinal obstruction. The active chemical compounds in this herb are emodin, chrysophanic acid, rhein, and anthraquinone glycoside. ...
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Objective: To observe the clinical efficacy and safety of oral administration of the traditional Chinese herb rhubarb to treat acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Method: This was a multicenter randomized double-blinded placebo controlled study that took place in 7 provinces of China that enrolled 244 patients (aged 18–80 years) who had acute exacerbation of COPD with the traditional Chinese syndrome pattern of phlegm-heat obstructing lung. Participants were divided into experimental and control groups. The experimental group received 4.5 g of rhubarb granules twice daily and the control group received placebo granules. Both groups also received conventional Western therapy consisting of oxygen therapy, an antibiotic, expectorant, and a bronchodilator. Treatment lasted 10 days. Symptom scores for cough, sputum volume and color, wheezing and chest tightness before treatment and on days 3, 5, 7, and 10 during the treatment were recorded. Lung function, arterial blood gas and levels of serum inflammatory factors, interleukin-4 (IL-4), interleukin-8 (IL-8), and interleukin-10 (IL-10) and tumor necrosis factor-alpha (TNF-α), before and after treatment were measured. Results: The sample size of the full analysis set (FAS) was 244 participants, and the sample size of per protocol set (PPS) was 235. Following 10 days' treatment, symptom scores of the experimental group were markedly lower than those of the placebo group (FAS: mean difference −1.67, 95% CI: –2.66 to −0.69, P = 0.001; PPS: mean difference −1.55, 95% CI: −2.56 to −0.54, P = 0.003). Lung function in the experimental group was significantly higher than in the placebo group (FEV1, FAS: mean difference 0.12, 95% CI: 0.06 to 0.18; P
... TCMs differ from therapeutics based on single-chemical entities. A number of herbal medicines and ancient TCM prescriptions are novel therapeutic regimens against COPD or asthma [18][19][20][21]; naturalb 2 AR agonists or antagonists participate in the regulation process, and TCM prescription compatibility enhances the regulation pathway more effectively [22]. ...
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Classical Chinese pharmacopeias describe numerous excellent herbal formulations, and each prescription is an outstanding pool of effective compounds for drug discovery. Clarifying the bioactivity of the combined mechanisms of the ingredients in complex traditional Chinese medicine formulas is challenging. A classical formula known as Qingfei Xiaoyan Wan, used clinically as a treatment for prevalent chronic lung disease, was investigated in this work. A mutually enhanced bioactivity-guided ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC/Q-TOF-MS) characterization system was proposed, coupled with a dual-luciferase reporter assay for β2AR-agonist cofactor screening. Arctiin, arctigenin, descurainoside and descurainolide B, four lignin compounds that showed synergistic bronchodilation effects with ephedrine, were revealed. The synergistic mechanism of arctigenin with the β2ARagonist involved with the reduction of free Ca2+ was clarified by a dual-luciferase reporter assay for intracellular calcium and the Ca2+ indicator fluo-4/AM to monitor changes in the fluorescence. The relaxant and contractile responses of airway smooth muscle are regulated by crosstalk between the intracellular cAMP and calcium signaling pathways. Our data indicated the non-selective βAR agonist ephedrine as the principal bronchodilator of the formula, whereas the lignin ingredients served as adjuvant ingredients. A greater understanding of the mechanisms governing the control of these pathways, based on conventional wisdom, could lead to the identification of novel therapeutic targets or new agents for the treatment of asthma and COPD.
... Relaxing the bowels with laxative is one of the common treating methods for lung diseases based on the theory of exterior-interior correlation between lung and large intestine. Our previous studies found that Chinese Rhubarb (Dahuang) could not only effectively improve the intestinal obstruction in COPD patients and rats with COPD but also effectively improve the dyspnea and gas exchange function [4,5], and this effect was related to the changes of neuropeptide levels in the blood [6]. Therefore, we hypothesized that stimulus of intestinal track, like herbal laxatives (osmotic or stimulant), Table 1: SP levels in lung, large intestine, stomach, kidney, spleen, heart, brain, and liver tissues of COPD-like rats (pg/ug, mean ± SD). may affect the secretion of certain specific neuropeptides (factors linked with lung performance) in lung tissue, which is similar to the inner meridians collaterals between lung and large intestine. ...
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Background. To investigate the specific link between lung and large intestine. Methods. Rat COPD-like model was prepared. Mirabilite or Chinese rhubarb was administrated intragastrically to stimulate the large intestine. Histological analysis of lung inflammation was assessed. The tissues levels of SP, VIP, NK1R, VIPR1, and VIPR2 were measured by using ELISA kits. In addition, mouse model of allergic asthma was prepared. Mirabilite was administrated intragastrically to stimulate the large intestine. Airway responsiveness and lung inflammation were assessed. The tissues levels of SP, VIP, NKA, NKB, NK1R, VIPR1, and VIPR2 were measured by using ELISA kits. Results. Stimulating the intestine with Mangxiao or Dahuang, SP, NK-1R, VIP, VIPR1, and VIPR2 were significantly increased in intestine tissues of rats with COPD and mice with asthma. Meanwhile, the SP and NK1R were significantly decreased, while VIP, VIPR1, and VIPR2 were significantly increased in lung tissues. An abnormal secretion of SP and VIP can be observed in other tissues; however, no marked changes were found in the receptors. The NKA and NKB levels were similar in lung tissues of mice with asthma among groups. Conclusions. Stimulating intestine with Mangxiao or Dahuang can specifically regulate the secretion of SP, VIP, and the receptors in lung tissues.
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Acute exacerbations of chronic obstructive pulmonary disease are associated with significant morbidity and mortality. Clinicians should begin by considering epidemiological aspects of acute exacerbations, including precipitating factors and risk factors. Affected individuals should be assessed using accepted criteria and then offered appropriate pharmacological and nonpharmacological therapy. In addition, prevention strategies should always be discussed with patients prone to acute exacerbations.
Article
Objective To evaluate the efficacy and safety of traditional Chinese medicine (TCM) in treating chronic obstructive pulmonary disease (COPD) in a stable stage. Methods We searched MEDLINE (1950 to July 2008), PubMed (1996 to July 2008), VIP (1989 to July 2008), WanFang (1998 to July 2008), CNKI (1979 to July 2008), and CBM (1978 to July 2008)for randomized control trials about TCM to treat stable COPD. Trial screening, quality assessment of included trials, and data extract were conducted. Statistical analysis was conducted by using RevMan 4.2.7 software. Results A total of 30 randomized controlled trials (RCTs) in the Chinese language were identified. No pooled analysis was performed because of the significant heterogeneity among the included trials. (1) For TCM alone versus blank therapy or placebo: 3 RCTs reported the clinical effective rate and only 1 indicated TCM was more effective; 5 RCTs reported forced expiratory volume in one second (FEV1)% after treatment and 2 indicated TCM alone as more effective in improving lung function; 4 RCTs reported quality of life after therapy and 2 indicated TCM alone was more effective in improving quality of life after therapy. (2) For integrated tradtional and western medicine versus western medicine alone: 11 RCTs included the clinical effective rate, 3 RCTs showed that integrated traditional and western medicine was more effective. Of 8 RCTs reporting FEV1%, 2 RCTs suggested that integrated traditional and western medicine was more effective. There were 3 RCTs studying 6 minute walking distance and 4 RCTs about quality of life, which also showed that integrated traditional and western medicine was more effective. No obvious adverse reaction to TCM was reported. Conclusions The current evidence shows TCM tends to relieve the symptoms and improve quality of life for patients with stable COPD without obvious adverse reaction. Due to the low methodological quality of trials included, more RCTs of high quality and large scale are required.
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Background Nearly 30% of all exacerbations of COPD do not have a clear etiology. Although pulmonary embolism (PE) can exacerbate respiratory symptoms such as dyspnea and chest pain, and COPD patients are at a high risk for PE due to a variety of factors including limited mobility, inflammation, and comorbidities, the prevalence of PE during exacerbations is uncertain. Methods A systematic review of the literature was performed to determine the reported prevalence of PE in acute exacerbations of COPD in patients who did and did not require hospitalization. The literature search was performed using MEDLINE, CINAHL, and EMBASE, and complemented by hand searches of bibliographies. Only cross-sectional or prospective studies that used CT scanning or pulmonary angiography for PE diagnosis were included. Results Of the 2,407 articles identified, 5 met the inclusion criteria (sample size, 550 patients). Overall, the prevalence of PE was 19.9% (95% confidence interval [CI], 6.7 to 33.0%; p = 0.014). In hospitalized patients, the prevalence was higher at 24.7% (95% CI, 17.9 to 31.4%; p = 0.001) than those who were evaluated in the emergency department (3.3%). Presenting symptoms and signs were similar between patients who did and did not have PE. Conclusions One of four COPD patients who require hospitalization for an acute exacerbation may have PE. A diagnosis of PE should be considered in patients with exacerbation severe enough to warrant hospitalization, especially in those with an intermediate-to-high pretest probability of PE.
Article
Objective: To explore the effect of Tanreqing Injection (TRQI) on the treatment of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) with Chinese medicine syndrome of retention of phlegm and heat in Fei (RPHF). Methods: In a prospective randomized controlled clinical trial, 90 patients with AECOPD of RPHF syndrome were randomly assigned to 3 groups, TRQI and controls A and B, each with 30 cases. The TRQI group was administered with the intravenous injections of 20 mL TRQI once a day and conventional Western medicine treatment. Control group A was administered with the intravenous injection of 15 mg ambroxol hydrochloride twice a day and conventional Western medicine treatment, and control group B was administered with conventional Western medicine treatment only. The treatments were administered for 10 days. Chinese medical symptoms and signs were scored, and plasma concentrations of interleukin (IL)-8 and neutrophil elastase (NE) were recorded. Results: (1) The Chinese medical symptoms (cough, sputum amount, expectoration, dyspnea and fever) and signs (tongue and pulse) improved significantly in the TRQI group (P<0.05 or P<0.01), and improvements in cough, sputum amount and expectoration were better in the TRQI group than control group B (P<0.05); there was no significant difference between the TRQI group and control group A (P>0.05). The sign of tongue was also improved significantly in the TRQI group (P<0.05). (2) The overall effects in the TRQI group and control group A were significantly better than in control group B (P<0.05), with no significant differences between the TRQI group and control group A (P>0.05). There was no significant difference in the total effective rate among the three groups (P>0.05). (3) After treatment, the plasma concentrations of IL-8 and NE decreased in the TRQI group and control group A (P<0.05), and the concentration of IL-8 in control group B decreased (P<0.05). The difference in IL-8 was greater in the TRQI group than in control group A and B before and after treatment, and the change in NE was greater in control group A than in the TRQI group and control group B, but there was no statistical significance among the three groups with regards to the change in IL-8 or NE (P>0.05). Conclusion: TRQI could improved the Chinese medical signs and symptoms in the patients with AECOPD, possibly because of the decreasing plasma levels of IL-8 and NE which could improve response to airway inflammation and mucus hypersecretion.
Book
The Cochrane Handbook for Systematic Reviews of Interventions (the Handbook) has undergone a substantial update, and Version 5 of the Handbook is now available online at www.cochrane-handbook.org and in RevMan 5. In addition, for the first time, the Handbook will soon be available as a printed volume, published by Wiley-Blackwell. We are anticipating release of this at the Colloquium in Freiburg. Version 5 of the Handbook describes the new methods available in RevMan 5, as well as containing extensive guidance on all aspects of Cochrane review methodology. It has a new structure, with 22 chapters divided into three parts. Part 1, relevant to all reviews, introduces Cochrane reviews, covering their planning and preparation, and their maintenance and updating, and ends with a guide to the contents of a Cochrane protocol and review. Part 2, relevant to all reviews, provides general methodological guidance on preparing reviews, covering question development, eligibility criteria, searching, collecting data, within-study bias (including completion of the Risk of Bias table), analysing data, reporting bias, presenting and interpreting results (including Summary of Findings tables). Part 3 addresses special topics that will be relevant to some, but not all, reviews, including particular considerations in addressing adverse effects, meta-analysis with non-standard study designs and using individual participant data. This part has new chapters on incorporating economic evaluations, non-randomized studies, qualitative research, patient-reported outcomes in reviews, prospective meta-analysis, reviews in health promotion and public health, and the new review type of overviews of reviews.
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Chronic obstructive pulmonary disease (COPD) continues to be an important cause of morbidity, mortality and healthcare costs in the western world. Although smoking is an important trigger of COPD, other factors such as chronic inflammation and malnutrition are known to influence its development. Because coeliac disease (CD) is characterized both by dysregulated inflammation and malnutrition, the possibility of an association between CD and COPD was investigated. Through biopsy data from all Swedish pathology departments, we identified 10 990 individuals with CD who were biopsied between 1987 and 2008 (Marsh 3: villous atrophy). As controls, 54 129 reference individuals matched for age, sex, county and calendar year of first biopsy were selected. Cox regression analysis was then performed to estimate hazard ratios (HRs) for having a diagnosis of COPD according to the Swedish Patient Register. During follow-up, 380 individuals with CD (3.5%) and 1391 (2.6%) controls had an incident diagnosis of COPD, which corresponds to an HR of 1.24 (95% CI: 1.10-1.38) and an excess risk of COPD of 79/100 000 person-years in CD. The risk increase remained 5 years after biopsy (HR = 1.17; 95% CI: 1.00-1.37). Risk estimates did not change with adjustment for type 1 diabetes, thyroid disease, rheumatoid arthritis, country of birth or level of education. Men with CD were at a higher risk of COPD (HR = 1.39; 95% CI: 1.18-1.62) than women with CD (HR = 1.11; 95% CI: 0.94-1.30). Of note, CD was also associated with COPD before CD diagnosis (odds ratio = 1.22; 95% CI: 1.02-1.46). Conclusion.  Patients with CD seem to be at a moderately increased risk of COPD both before and after CD diagnosis.
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To determine whether clinical trials originating in certain countries always have positive results. Abstracts of trials from Medline (January 1966-June 1995). Two separate studies were conducted. The first included trials in which the clinical outcome of a group of subjects receiving acupuncture was compared to that of a group receiving placebo, no treatment, or a nonacupuncture intervention. In the second study, randomized or controlled trials of interventions other than acupuncture that were published in China, Japan, Russia/USSR, or Taiwan were compared to those published in England. Blinded reviewers determined inclusion and outcome and separately classified each trial by country of origin. In the study of acupuncture trials, 252 of 1085 abstracts met the inclusion criteria. Research conducted in certain countries was uniformly favorable to acupuncture; all trials originating in China, Japan, Hong Kong, and Taiwan were positive, as were 10 out of 11 of those published in Russia/USSR. In studies that examined interventions other than acupuncture, 405 of 1100 abstracts met the inclusion criteria. Of trials published in England, 75% gave the test treatment as superior to control. The results for China, Japan, Russia/USSR, and Taiwan were 99%, 89%, 97%, and 95%, respectively. No trial published in China or Russia/USSR found a test treatment to be ineffective. Some countries publish unusually high proportions of positive results. Publication bias is a possible explanation. Researchers undertaking systematic reviews should consider carefully how to manage data from these countries.