Shannon Longshore's research while affiliated with University of South Carolina School of Medicine - Greenville and other places

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Publications (22)


Predicted probability (with 95% confidence interval) of mortality according to prehospital time, based on multivariable logistic regression
Predicted hospital length of stay (with 95% confidence interval) according to prehospital time, based on multivariable linear regression
Predicted probability (with 95% confidence interval) of intensive care unit (ICU) admission according to prehospital time, based on multivariable logistic regression
Predicted probability (with 95% confidence interval) of in-hospital complications according to prehospital time, based on multivariable logistic regression
Prehospital time and mortality in pediatric trauma
  • Article
  • Full-text available

June 2024

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3 Reads

Pediatric Surgery International

Olivia Nieto Rickenbach

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Joshua Aldridge

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Dmitry Tumin

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[...]

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Shannon Longshore

Purpose The “Golden Hour” of transportation to a hospital has long been accepted as a central principal of trauma care. However, this has not been studied in pediatric populations. We assessed for non-linearity of the relationship between prehospital time and mortality in pediatric trauma patients, redefining the threshold at which reducing this time led to more favorable outcomes. Methods We performed an analysis of the 2017–2018 American College of Surgeons Trauma Quality Improvement Program, including trauma patients age < 18 years. We examined the association between prehospital time and odds of in-hospital mortality using linear, polynomial, and restricted cubic spline (RCS) models, ultimately selecting the non-linear RCS model as the best fit. Results 60,670 patients were included in the study, of whom 1525 died and 3074 experienced complications. Prolonged prehospital time was associated with lower mortality and fewer complications. Both models demonstrated that mortality risk was lowest at 45–60 min, after which time was no longer associated with reduced probability of mortality. Conclusions The demonstration of a non-linear relationship between pre-hospital time and patient mortality is a novel finding. We highlight the need to improve prehospital treatment and access to pediatric trauma centers while aiming for hospital transportation within 45 min.

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Association Between Congenital Heart Disease-Related Diagnosis Codes and Trauma Surgery Outcomes

May 2024

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7 Reads

The American surgeon

Background Congenital heart disease (CHD) is one the most common congenital anomalies, with a prevalence of 8-10 cases per 1000 live births in the United States. Congenital heart disease has been recognized as a risk factor for poor perioperative and postoperative outcomes in non-cardiac surgery. We aimed to determine if documentation of CHD-related diagnosis codes was associated with similar risks for trauma surgery. Methods Data were acquired from the 2010-2019 American College of Surgeons’ Trauma Quality Programs Participant Use Files. This study included trauma patients of all ages with one or more surgical procedures and at least one documented non-trauma (comorbidity) International Classification of Diseases code. Patients were stratified based on presence of CHD-related comorbidity codes vs any other comorbidity. Outcomes included mortality, hospital length of stay (LOS), discharge disposition, and in-hospital complications. Results Using 1:1 propensity score matching, we matched 215 cases with CHD-related comorbid diagnoses to non-CHD controls. Compared to patients with other comorbidities, patients with CHD-related comorbidites were less likely to be discharged home to self-care (odds ratio: 0.44, 95% confidence interval [CI]: 0.25, 078 P = .005) and tended to have prolonged hospital LOS (incidence rate ratio [IRR]: 1.06, 95% CI: 1.001, 1.13, P = .046). Conclusions We present the first quantitative multicenter analysis correlating documentation of comorbid CHD-related diagnoses with higher risk of adverse outcomes after trauma surgery. These results support the need to routinely acknowledge and document CHD as comorbidity in trauma admissions that could lead to surgical intervention and for trauma centers to prepare for patients with a possible CHD comorbidity.



In-person school attendance and adolescent exposure to injury-related risk behaviors during the COVID-19 pandemic in the United States

April 2023

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6 Reads

Preventive Medicine

School closures during the COVID-19 pandemic have been reported to influence adolescents' behavioral health and may have altered their exposure to injury risk. We aimed to determine how in-person school attendance of individual adolescents in the United States during the pandemic was correlated with a range of risky health behaviors. We used self-reported data from adolescents 14-18 years old enrolled in grades 9-12 who participated in the 2020 Adolescent Behaviors and Experiences Survey. The exposure of interest was in-person vs remote school attendance in the previous 30 days. Risk behavior outcomes included not wearing a seatbelt when riding in a car; riding with someone who was drinking and driving; suffering intimate partner violence (IPV); forced sexual encounters; suicidal ideation; suicidal planning; electronic bullying; gun carrying; and physical fighting. Based on a multivariable analysis of 5202 students (65% attending school in-person) adjusted for age, sex, race, ethnicity, sexual orientation, parental unemployment, food insecurity, and homelessness, we found that in-person school attendance was associated with increased odds of every risk behavior except suicidal ideation and electronic bullying, with adjusted odds ratios ranging from 1.40 (95% confidence interval [CI]: 1.04, 1.88) for not wearing a seatbelt to 3.43 for IPV (95% CI: 1.97, 5.97). Our analyses demonstrate that in-person school attendance during the COVID-19 pandemic was associated with higher rates of risk behavior among adolescents. Further research is needed explore if this relationship is causal, and how these risks could be mitigated, as most adolescents have now returned to in-person schooling.


Emergency department thoracotomy in children: A Pediatric Trauma Society, Western Trauma Association, and Eastern Association for the Surgery of Trauma systematic review and practice management guideline

March 2023

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7 Reads

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2 Citations

Journal of Trauma and Acute Care Surgery

Background: The role of emergency department resuscitative thoracotomy (EDT) in traumatically injured children has not been elucidated. We aimed to perform a systematic review and create evidence-based guidelines to answer the following PICO (population, intervention, comparator, and outcome) question: should pediatric patients who present to the emergency department pulseless (with or without signs of life [SOL]) after traumatic injuries (penetrating thoracic, penetrating abdominopelvic, or blunt) undergo EDT (vs. no EDT) to improve survival and neurologically intact survival? Methods: Using Grading of Recommendations Assessment, Development and Evaluation methodology, a group of 12 pediatric trauma experts from the Pediatric Trauma Society, Western Trauma Association, and Eastern Association for the Surgery of Trauma assembled to perform a systematic review. A consensus conference was conducted, a database was queried, abstracts and manuscripts were reviewed, data extraction was performed, and evidence quality was determined. Evidence tables were generated, and the committee voted on guideline recommendations. Results: Three hundred three articles were identified. Eleven studies met the inclusion criteria and were used for guideline creation, providing 319 pediatric patients who underwent EDT. No data were available on patients who did not undergo EDT. For each PICO, the quality of evidence was very low based on the serious risk of bias and serious or very serious imprecision. Conclusion: Based on low-quality data, we make the following recommendations. We conditionally recommend EDT when a child presents pulseless with SOL to the emergency department following penetrating thoracic injury, penetrating abdominopelvic injury and after blunt injury if emergency adjuncts point to a thoracic source. We conditionally recommend against EDT when a pediatric patient presents pulseless without SOL after penetrating thoracic and penetrating abdominopelvic injury. We strongly recommend against EDT in the patient without SOL after blunt injury.


Figure 1: Pathologic specimen showing the perforated Meckel's diverticulum that was surgically removed from our patient.
Spontaneous perforation of Meckel’s diverticulum causing a partial small bowel obstruction: A case report

January 2023

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8 Reads

Journal of Neonatal Surgery

Background: Meckel’s diverticulum is a common congenital malformation in young children. Perforation of Meckel’s diverticulum in a neonate is a rarity and poses diagnostic and management challenges. Case Presentation: This patient is a former 26 5/7 week estimated gestational age infant who presented at 41 weeks corrected gestational age with abdominal distension and was discovered to have a perforated Meckel’s diverticulum that presented as a partial small bowel obstruction. Resection of the involved bowel and ileo-ileal anastomosis was performed. Conclusion: Small bowel obstructions should be considered as a potential presentation of a perforated Meckel’s diverticulum.


Shelter in Place and an Alarming Increase in Penetrating Trauma in Children and Concerning Decrease in Child Abuse

December 2022

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14 Reads

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3 Citations

The American surgeon

Background: On March 14, 2020, schools across North Carolina (NC) closed in response to Covid-19, forcing completion of the school year at home. Most pediatric trauma occurs at home with a higher prevalence when children are out of school. We queried the state trauma database to assess if the 2020 "shelter in place" was associated with an increase in pediatric trauma statewide. Methods: The NC trauma database was queried for injuries in children (age < 18 yrs) from 13 March-1 August 2020, and the corresponding months of 2018 and 2019. The number and type of injuries were compared. We also queried the NC death certificate and child welfare databases. Data were analyzed by standard statistical methods using chi-squared or Kruskal-Wallis test. Results: Total pediatric trauma cases were lower during 2020 (71.6 per 100,000) compared to 2018 (92.4 per 100,000) and 2019 (80 per 100,000) (P < .001); however, average injury severity score (ISS) was higher (P = .001). A significant increase in firearm injuries were seen in 2020 (P = .016), with an increase in mortality (P = .08) and ISS (P = .013). The rate of child abuse trauma decreased in 2020 (P = .005) as did the number of child abuse and neglect reports (P < .001). There were also significant decreases in trauma due to sports, burns, falls, and motor vehicle accidents. Conclusion: While overall pediatric trauma decreased during the Covid-19 pandemic, there was an alarming increase in penetrating injuries in children. Child abuse trauma and reports decreased, which is concerning for lower identification of abuse.



Outcomes of farm compared to nonfarm pediatric injuries: A propensity‐matched analysis

September 2022

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18 Reads

The Journal of Rural Health

Objectives: Pediatric farm-related injuries are rare but tend to be severe relative to other types of pediatric injury and may result in worse clinical outcomes. However, the comparison of farm and nonfarm injuries is confounded by different injury mechanisms, patient characteristics, and treating facilities. Therefore, we used propensity score matching to compare outcomes of pediatric farm and nonfarm injuries in the United States. Methods: Data were obtained from the 2017-2019 Trauma Quality Program database. Farm as compared to nonfarm injury was defined as the location of an injury and served as the independent variable analyzed in this study. The outcome variables analyzed were in-hospital mortality, hospital length of stay (LOS), and admission to the intensive care unit (ICU). Results: We identified 2,040 farm injuries and 201,865 nonfarm injuries meeting inclusion criteria. In this cohort, the mortality rate was 1%, median LOS was 2 days, and 14% of patients were admitted to the ICU. In the propensity-matched analysis (including 2,039 farm cases matched to 2,039 nonfarm controls), farm as compared to nonfarm injuries were associated with 5% longer LOS (95% CI: 1%, 8%; P = .01), but not mortality or ICU admission. Conclusions: In a propensity-matched analysis, pediatric farm injuries resulted in prolonged hospital stay compared to nonfarm injuries. Identifying patient- and health care system-level factors contributing to prolonged LOS may help optimize the care of children injured on farms.



Citations (9)


... For example, motor vehicle collisions and sports-related injuries decreased during the time children were out of school due to pandemic-era lockdowns, and in the first year of the pandemic, there were fewer pediatric trauma visits to the emergency department related to non-accidental trauma, abuse, suicide, assault, and animal-related injuries. [13][14][15] On the other hand, school closures and stay-athome orders coincided with increased risk of off-highway vehicle injuries and firearm injuries among youth. [16][17][18] Research on pandemic-era trends in risky behaviors related to injury has been relatively sparse, although one survey study showed that during the lockdown, drug use, bullying, and fighting also decreased among adolescents. ...

Reference:

In-person school attendance and adolescent exposure to injury-related risk behaviors during the COVID-19 pandemic in the United States
Shelter in Place and an Alarming Increase in Penetrating Trauma in Children and Concerning Decrease in Child Abuse
  • Citing Article
  • December 2022

The American surgeon

... However, we acknowledge that there are too few such centers in the United States to accommodate the volume of pediatric traumas, as compared to adult trauma centers. For example, only 72% of pediatric trauma patients in the United States have access to a verified pediatric trauma center accessible within 60 min by the air or ground transportation [24], and only 53% of pediatric trauma patients in the 2017-2018 TQIP registry received care in a pediatric-verified trauma center [25]. ...

Facility Size and Risk Factors for Mortality in Pediatric Trauma
  • Citing Article
  • August 2022

The American surgeon

... Health insurance significantly contributes to reducing mortality rates, particularly among children and adults with high-risk health profiles (Doyle, 2005;Dozier et al., 2010;Gaudette et al., 2018;Howell et al., 2010;Wherry & Meyer, 2016), preventing the onset of chronic conditions (Boudreaux et al., 2016;Gaudette et al., 2018), and improving mental health status, notably in lowincome populations (Baicker et al., 2013;Gaudette et al., 2018;McMorrow et al., 2016). In addition, health insurance has been used in other studies (e.g., Miringoff & Miringoff, 1999;Phillips, 2006;Warner, 2006) to represent community health and basic human needs components of well-being due to its ability to reflect not just the prevalence of specific health conditions but also to represent issues related to access to routine preventive, acute, and emergency medical care (Amstislavski et al., 2012;Hoffman & Paradise, 2008;Patel et al., 2022). ...

Lack of Health Insurance Coverage and Emergency Medical Service Transport for Pediatric Trauma Patients
  • Citing Article
  • August 2022

Journal of Surgical Research

... Teachers with a clinical health background do not always have superior outcomes to non-clinical teachers 1 1 2 3 4 raising the question of the value added by emergency medical services (EMS) backgrounds on learner outcomes [8]. Multiple studies have also demonstrated the efficacy of medical students to serve as instructors, once completing the basic course [9][10][11][12][13]. In 2020, we developed our research question to evaluate the differences between instructors with a clinical healthcare (e.g., EMS/ medical) background compared to layperson instructors on learners' outcomes. ...

Stop the Bleed®: Medical Students as Instructors of the Bleeding Control Basics Course
  • Citing Article
  • April 2021

The American surgeon

... Five studies 13,21,25,39,45 compared test scores from 427 trainees before and after a STB course. Test results improved statistically significantly (mean difference post versus pre groups, 24.62; 95% CI 15.28-33.96, ...

Stop the Bleed: An Assessment of Medical Student Knowledge of Bleeding Control Techniques
  • Citing Article
  • October 2018

Journal of the American College of Surgeons

... The method has proven useful in accurately diagnosing extrahepatic bile duct leaks preoperatively. Similar case reports from the USA (2018) and India (2016, 2017) further illustrate instances of spontaneous biliary perforation diagnosed through various imaging modalities (8)(9)(10). ...

Spontaneous bile duct perforation in a neonate

Journal of Pediatric Surgery Case Reports

... Sixteen studies were observational; there was one prospective cohort study, five RCTs, and five quasiexperimental studies. Studies were conducted in adult and paediatric emergency and resuscitation teams and departments [69,71,82,[96][97][98][99][100][101][102][103][104][105], paediatric and neonatal care [106][107][108][109][110][111][112], obstetric care [24,[113][114][115], ICU [116,117], a post anaesthesia care unit [118] and a mental healthcare setting [2]. Where reported, ISS interventions were delivered over periods of one day to 18 months, with training lasting from 30 min to 3 h. ...

An In-situ Simulation-based Educational Outreach Project for Pediatric Trauma Care in a Rural Trauma System
  • Citing Article
  • October 2017

Journal of Pediatric Surgery

... The thirteen eligible studies were published between 1968 and 2017, consisting of seven case reports, one case-control study (N = 5 patients), three retrospective cohort studies, one prospective cohort study, and one randomized controlled trial (RCT) ( Table 1). 7,9,14,15,[19][20][21][22][23][24][25][26][27] Except for the study by Chipps et al., the cohort studies and the RCT addressed different research questions, but described apnea as well. [23][24][25][26][27] The other studies were case studies, in which in total 15 descriptive cases of infants with IHPS and perioperative apnea were described. ...

Atropine: A Cure for Persistent Post Laparoscopic Pyloromyotomy Emesis?

Journal of Neonatal Surgery

... In this high risk, anticoagulated population, chest tube placement is associated with a significant risk of complication and mortality. 5 For these reasons, chest tube placement is generally reserved for cases in which pneumothorax acutely compromises ECMO flow and patient hemodynamics. We have shown that extubation on ECMO is a safe alternative for neonatal patients with pneumothorax. ...

Chest tube placement in children during extracorporeal membrane oxygenation (ECMO)
  • Citing Article
  • January 2014

Journal of Pediatric Surgery