Design and rationale of the Post-Intensive Care Syndrome - paediatrics (PICS-p) Longitudinal Cohort Study

INTRODUCTION

As paediatric intensive care unit (PICU) mortality declines, there is growing recognition of the morbidity experienced by children surviving critical illness and their families. A comprehensive understanding of the adverse physical, cognitive, emotional and social sequelae common to PICU survivors is limited, however, and the trajectory of recovery and risk factors for morbidity remain unknown.

METHODS AND ANALYSIS

The Post-Intensive Care Syndrome - paediatrics Longitudinal Cohort Study will evaluate child and family outcomes over 2 years following PICU discharge and identify child and clinical factors associated with impaired outcomes. We will enrol 750 children from 30 US PICUs during their first PICU hospitalisation, including 500 case participants experiencing ≥3 days of intensive care that include critical care therapies (eg, mechanical ventilation, vasoactive infusions) and 250 age-matched, sex-matched and medical complexity-matched control participants experiencing a single night in the PICU with no intensive care therapies. Children, parents and siblings will complete surveys about health-related quality of life, physical function, cognitive status, emotional health and peer and family relationships at multiple time points from baseline recall through 2 years post-PICU discharge. We will compare outcomes and recovery trajectories of case participants to control participants, identify risk factors associated with poor outcomes and determine the emotional and social health consequences of paediatric critical illness on parents and siblings.

ETHICS AND DISSEMINATION

This study has received ethical approval from the University of Pennsylvania Institutional Review Board (protocol #843844). Our overall objective is to characterise the ongoing impact of paediatric critical illness to guide development of interventions that optimise outcomes among children surviving critical illness and their families. Findings will be presented at key disciplinary meetings and in peer-reviewed publications at fixed data points. Published manuscripts will be added to our public study website to ensure findings are available to families, clinicians and researchers.

TRIALS REGISTRATION NUMBER

NCT04967365.

Family Presence at the PICU Bedside: A Single-Center Retrospective Cohort Study

OBJECTIVES

To determine factors associated with bedside family presence in the PICU and to understand how individual factors interact as barriers to family presence.

DESIGN

Mixed methods study.

SETTING

Tertiary children's hospital PICU.

SUBJECTS

Five hundred twenty-three children of less than 18 years enrolled in the Seattle Children's Hospital Outcomes Assessment Program from 2011 to 2017.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Quantitative: Family was documented every 2 hours. Exposures included patient and illness characteristics and family demographic and socioeconomic characteristics. We used multivariable logistic regression to identify factors associated with presence of less than 80% and stratified results by self-reported race. Longer PICU length of stay (LOS), public insurance, and complex chronic conditions (C-CD) were associated with family presence of less than 80%. Self-reported race modified these associations; no factors were associated with lower bedside presence for White families, in contrast with multiple associations for non-White families including public insurance, C-CD, and longer LOS. Qualitative: Thematic analysis of social work notes for the 48 patients with family presence of less than 80% matched on age, LOS, and diagnosis to 48 patients with greater than or equal to 95% family presence. Three themes emerged: the primary caregiver's prior experiences with the hospital, relationships outside of the hospital, and additional stressors during the hospitalization affected bedside presence.

CONCLUSIONS

We identified sociodemographic and illness factors associated with family bedside presence in the PICU. Self-reported race modified these associations, representing racism within healthcare. Family presence at the bedside may help identify families facing greater disparities in healthcare access.

Predicting functional and quality-of-life outcomes following pediatric sepsis: performance of PRISM-III and PELOD-2

BACKGROUND

Illness severity scores predict mortality following pediatric critical illness. Given declining PICU mortality, we assessed the ability of the Pediatric Risk of Mortality-III (PRISM) and Pediatric Logistic Organ Dysfunction-2 (PELOD) scores to predict morbidity outcomes.

METHODS

Among 359 survivors <18 years in the Life After Pediatric Sepsis Evaluation multicenter prospective cohort study, we assessed functional morbidity at hospital discharge (Functional Status Scale increase ≥3 points from baseline) and health-related quality of life (HRQL; Pediatric Quality of Life Inventory or Functional Status II-R) deterioration >25% from baseline at 1, 3, 6, and 12 months post-admission. We determined discrimination of admission PRISM and admission, maximum, and cumulative 28-day PELOD with functional and HRQL morbidity at each timepoint.

RESULTS

Cumulative PELOD provided the best discrimination of discharge functional morbidity (area under the receive operating characteristics curve [AUROC] 0.81, 95% CI 0.76-0.87) and 3-month HRQL deterioration (AUROC 0.71, 95% CI 0.61-0.81). Prediction was inferior for admission PRISM and PELOD and for 6- and 12-month HRQL assessments.

CONCLUSIONS

Illness severity scores have a good prediction of early functional morbidity but a more limited ability to predict longer-term HRQL. Identification of factors beyond illness severity that contribute to HRQL outcomes may offer opportunities for intervention to improve outcomes.

IMPACT

Illness severity scores are commonly used for mortality prediction and risk stratification in pediatric critical care research, quality improvement, and resource allocation algorithms. Prediction of morbidity rather than mortality may be beneficial given declining pediatric intensive care unit mortality. The PRISM and PELOD scores have moderate to good ability to predict new functional morbidity at hospital discharge following pediatric septic shock but limited ability to predict health-related quality of life outcomes in the year following PICU admission. Further research is needed to identify additional factors beyond illness severity that may impact post-discharge health-related quality of life.

Noninvasive Ventilation for Pediatric Acute Respiratory Distress Syndrome: Experience From the 2016/2017 Pediatric Acute Respiratory Distress Syndrome Incidence and Epidemiology Prospective Cohort Study

OBJECTIVES

The worldwide practice and impact of noninvasive ventilation (NIV) in pediatric acute respiratory distress syndrome (PARDS) is unknown. We sought to describe NIV use and associated clinical outcomes in PARDS.

DESIGN

Planned ancillary study to the 2016/2017 prospective Pediatric Acute Respiratory Distress Syndrome Incidence and Epidemiology study.

SETTING

One hundred five international PICUs.

PATIENTS

Patients with newly diagnosed PARDS admitted during 10 study weeks.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Children were categorized by their respiratory support at PARDS diagnosis into NIV or invasive mechanical ventilation (IMV) groups. Of 708 subjects with PARDS, 160 patients (23%) received NIV at PARDS diagnosis (NIV group). NIV failure rate (defined as tracheal intubation or death) was 84 of 160 patients (53%). Higher nonrespiratory pediatric logistic organ dysfunction (PELOD-2) score, Pa o2 /F io2 was less than 100 at PARDS diagnosis, immunosuppression, and male sex were independently associated with NIV failure. NIV failure was 100% among patients with nonrespiratory PELOD-2 score greater than 2, Pa o2 /F io2 less than 100, and immunosuppression all present. Among patients with Pa o2 /F io2 greater than 100, children in the NIV group had shorter total duration of NIV and IMV, than the IMV at initial diagnosis group. We failed to identify associations between NIV use and PICU survival in a multivariable Cox regression analysis (hazard ratio 1.04 [95% CI, 0.61-1.80]) or mortality in a propensity score matched analysis ( p = 0.369).

CONCLUSIONS

Use of NIV at PARDS diagnosis was associated with shorter exposure to IMV in children with mild to moderate hypoxemia. Even though risk of NIV failure was high in some children, we failed to identify greater hazard of mortality in these patients.

Epidemiology of Intensive Care Admissions for Children in the US From 2001 to 2019

Importance

Estimates of the number of US children receiving intensive care unit (ICU) care and ICU admission patterns over time are lacking.

Objective

To determine how ICU admission patterns, use of critical care services, and the characteristics and outcomes of critically ill children have changed from 2001 to 2019.

Design, Setting, and Participants

This population-based retrospective cohort study used data from the Healthcare Cost and Utilization Project's state inpatient databases from a total of 21 US states in 2001, 2004, 2010, 2016, and 2019. Hospitalized children aged 0 to 17 years, excluding newborns (during birth hospitalization), were included. Patients admitted to rehabilitation institutions or psychiatric hospitals were also excluded. Data were analyzed from July 2021 to December 2022.

Exposures

Care in a nonneonatal ICU.

Main Outcomes and Measures

From extracted patient data, International Classification of Diseases, Ninth Revision, Clinical Modification, and Tenth Revision, Clinical Modification, codes were used to identify diagnoses, comorbid conditions, organ failures, and mechanical ventilation. Generalized linear Poisson regression and the Cuzick test were used to evaluate trends. US Census data were used to generate age- and sex-adjusted national estimates of ICU admissions and costs.

Results

Of 2 157 991 pediatric admissions, 275 656 (12.8%) included ICU care. The mean (SD) age was 6.43 (6.10) years; 121 894 individuals were female (44.2%), and 153 731 were male (55.8%). From 2001 to 2019, the prevalence of ICU care among hospitalized children increased from 10.6% to 15.5%. The percentage of ICU admissions in children's hospitals rose from 51.2% to 85.1% (relative risk [RR], 1.66; 95% CI, 1.64-1.68). The percentage of children admitted to an ICU with an underlying comorbidity increased from 46.2% to 57.0% (RR, 1.23; 95% CI, 1.22-1.25), and the percentage with preadmission technology dependence increased from 16.4% to 23.5% (RR, 1.44; 95% CI, 1.40-1.48). The prevalence of multiple organ dysfunction syndrome increased from 6.8% to 21.0% (RR, 3.12; 95% CI, 2.98-3.26), while mortality decreased from 2.5% to 1.8% (RR, 0.72; 95% CI, 0.66-0.79). Hospital length of stay increased by 0.96 days (95% CI, 0.73-1.18) for ICU admissions from 2001 to 2019. After inflation adjustment, total costs for a pediatric admission involving ICU care nearly doubled between 2001 and 2019. Nationally, an estimated 239 000 children were admitted to a US ICU in 2019, corresponding to $11.6 billion in hospital costs.

Conclusions and Relevance

In this study, the prevalence of children receiving ICU care in the US increased, as did length of stay, technology use, and associated costs. The US health care system must be equipped to care for these children in the future.

Variation in tracheostomy placement and outcomes following pediatric trauma among adult, pediatric, and combined trauma centers

BACKGROUND

Tracheostomy placement is much more common in adults than children following severe trauma. We evaluated whether tracheostomy rates and outcomes differ for pediatric patients treated at trauma centers that primarily care for children versus adults.

METHODS

We conducted a retrospective cohort study of patients younger than 18 years in the National Trauma Data Bank from 2007 to 2016 treated at a Level I/II pediatric, adult, or combined adult/pediatric trauma center, ventilated >24 hours, and who survived to discharge. We used multivariable logistic regression adjusted for age, insurance, injury mechanism and body region, and Injury Severity Score to estimate the association between the three trauma center types and tracheostomy. We used augmented inverse probability weighting to model the likelihood of tracheostomy based on the propensity for treatment at a pediatric, adult, or combined trauma center, and estimated associations between trauma center type with length of stay and postdischarge care.

RESULTS

Among 33,602 children, tracheostomies were performed in 4.2% of children in pediatric centers, 7.8% in combined centers (adjusted odds ratio [aOR], 1.47; 95% confidence interval [CI], 1.20-1.81), and 11.2% in adult centers (aOR, 1.81; 95% CI, 1.48-2.22). After propensity matching, the estimated average tracheostomy rate would be 62.9% higher (95% CI, 37.7-88.1%) at combined centers and 85.3% higher (56.6-113.9%) at adult centers relative to pediatric centers. Tracheostomy patients had longer hospital stay in pediatric centers than combined (-4.4 days, -7.4 to -1.3 days) or adult (-4.0 days, -7.2 to -0.9 days) centers, but fewer children required postdischarge inpatient care (70.1% pediatric vs. 81.3% combined [aOR, 2.11; 95% CI, 1.03-4.31] and 82.4% adult centers [aOR, 2.51; 95% CI, 1.31-4.83]).

CONCLUSION

Children treated at pediatric trauma centers have lower likelihood of tracheostomy than children treated at combined adult/pediatric or adult centers independent of patient or injury characteristics. Better understanding of optimal indications for tracheostomy is necessary to improve processes of care for children treated throughout the pediatric trauma system.

LEVEL OF EVIDENCE

Prognostic and Epidemiological; Level III.

Outcomes of Children Surviving Pediatric Acute Respiratory Distress Syndrome: From the Second Pediatric Acute Lung Injury Consensus Conference

OBJECTIVES

To summarize the evidence for the Second Pediatric Acute Lung Injury Consensus Conference-2 (PALICC-2) recommendations for assessment of outcomes among patients surviving pediatric acute respiratory distress syndrome (PARDS).

DATA SOURCES

MEDLINE (Ovid), Embase (Elsevier), and CINAHL Complete (EBSCOhost).

STUDY SELECTION

We conducted a scoping review to identify studies evaluating outcomes following PARDS. We included studies of survivors of PARDS, acute respiratory failure with a high proportion of PARDS patients, or other critical illnesses if PARDS-specific outcomes could be extracted.

DATA EXTRACTION

Title/abstract review, full-text review, and data extraction using a standardized data collection form.

DATA SYNTHESIS

The Grading of Recommendations Assessment, Development and Evaluation approach was used to identify and summarize evidence and develop recommendations. Of 8,037 abstracts screened, we identified 20 articles for inclusion. Morbidity following PARDS was common and affected multiple domains of pulmonary and nonpulmonary function. There was insufficient evidence to generate any evidence-based recommendations. We generated eight good practice statements and five research statements. A panel of 52 experts discussed each proposed good practice statement and research statement, and the agreement rate was measured with an online voting process. Good practice statements describe the approach to clinical outcome assessment, assessment of pulmonary outcomes of children surviving PARDS, and assessment of nonpulmonary outcomes of children surviving PARDS including health-related quality of life and physical, neurocognitive, emotional, family, and social functioning. The five research statements relate to assessment of patient preillness status, use of postdischarge endpoints for clinical trials, the association between short-term and longer term outcomes, the trajectory of recovery following PARDS, and practices to optimize follow-up.

CONCLUSIONS

There is increasing evidence that children are at risk for impairments across a range of pulmonary and nonpulmonary health domains following hospitalization for PARDS. The results of this extensive scoping review and consensus conference involving experts in PARDS research, clinical care, and outcomes assessment provide guidance to clinicians and researchers on postdischarge follow-up to optimize the long-term health of patients surviving PARDS.

Executive Summary of the Second International Guidelines for the Diagnosis and Management of Pediatric Acute Respiratory Distress Syndrome (PALICC-2)

OBJECTIVES

We sought to update our 2015 work in the Second Pediatric Acute Lung Injury Consensus Conference (PALICC-2) guidelines for the diagnosis and management of pediatric acute respiratory distress syndrome (PARDS), considering new evidence and topic areas that were not previously addressed.

DESIGN

International consensus conference series involving 52 multidisciplinary international content experts in PARDS and four methodology experts from 15 countries, using consensus conference methodology, and implementation science.

SETTING

Not applicable.

PATIENTS

Patients with or at risk for PARDS.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Eleven subgroups conducted systematic or scoping reviews addressing 11 topic areas: 1) definition, incidence, and epidemiology; 2) pathobiology, severity, and risk stratification; 3) ventilatory support; 4) pulmonary-specific ancillary treatment; 5) nonpulmonary treatment; 6) monitoring; 7) noninvasive respiratory support; 8) extracorporeal support; 9) morbidity and long-term outcomes; 10) clinical informatics and data science; and 11) resource-limited settings. The search included MEDLINE, EMBASE, and CINAHL Complete (EBSCOhost) and was updated in March 2022. Grading of Recommendations, Assessment, Development, and Evaluation methodology was used to summarize evidence and develop the recommendations, which were discussed and voted on by all PALICC-2 experts. There were 146 recommendations and statements, including: 34 recommendations for clinical practice; 112 consensus-based statements with 18 on PARDS definition, 55 on good practice, seven on policy, and 32 on research. All recommendations and statements had agreement greater than 80%.

CONCLUSIONS

PALICC-2 recommendations and consensus-based statements should facilitate the implementation and adherence to the best clinical practice in patients with PARDS. These results will also inform the development of future programs of research that are crucially needed to provide stronger evidence to guide the pediatric critical care teams managing these patients.

Epidemiology and outcomes of multiple organ dysfunction syndrome following pediatric trauma

BACKGROUND

Existing studies have found a low prevalence of multiple organ dysfunction syndrome (MODS) in pediatric trauma patients, typically applying adult criteria to single-center pediatric cohorts. We used pediatric criteria to determine the prevalence, risk factors, and outcomes of MODS among critically injured children in a national pediatric intensive care unit (PICU) database.

METHODS

We conducted a retrospective cohort study of PICU patients 1 month to 17 years with traumatic injury in the Virtual Pediatric Systems, LLC database from 2009 to 2017. We used International Pediatric Sepsis Consensus Conference criteria to identify MODS on Day 1 of PICU admission and estimated the risk of mortality and poor functional outcome (Pediatric Overall/Cerebral Performance Category ≥3 with ≥1 point worsening from baseline) for MODS and for each type of organ dysfunction using generalized linear Poisson regression adjusted for age, comorbidities, injury type and mechanism, and postoperative status.

RESULTS

Multiple organ dysfunction syndrome was present on PICU Day 1 in 23.1% of 37,177 trauma patients (n = 8,592), with highest risk among patients with injuries associated with drowning, asphyxiation, and abuse. Pediatric intensive care unit mortality was 20.1% among patients with MODS versus 0.5% among patients without MODS (adjusted relative risk, 32.3; 95% confidence interval, 24.1-43.4). Mortality ranged from 1.5% for one dysfunctional organ system to 69.1% for four or more organ systems and was highest among patients with hematologic dysfunction (43.3%) or renal dysfunction (29.6%). Death or poor functional outcome occurred in 46.7% of MODS patients versus 8.3% of patients without MODS (adjusted relative risk, 4.3; 95% confidence interval 3.4-5.3).

CONCLUSION

Multiple organ dysfunction syndrome occurs more frequently following pediatric trauma than previously reported and is associated with high risk of morbidity and mortality. Based on existing literature using identical methodology, both the prevalence and mortality associated with MODS are higher among trauma patients than the general PICU population. Consideration of early organ dysfunction in addition to injury severity may aid prognostication following pediatric trauma.

LEVEL OF EVIDENCE

Prognostic and Epidemiological; Level III.

A Core Outcome Measurement Set for Pediatric Critical Care

OBJECTIVES

To identify a PICU Core Outcome Measurement Set (PICU COMS), a set of measures that can be used to evaluate the PICU Core Outcome Set (PICU COS) domains in PICU patients and their families.

DESIGN

A modified Delphi consensus process.

SETTING

Four webinars attended by PICU physicians and nurses, pediatric surgeons, rehabilitation physicians, and scientists with expertise in PICU clinical care or research ( n = 35). Attendees were from eight countries and convened from the Pediatric Acute Lung Injury and Sepsis Investigators Pediatric Outcomes STudies after PICU Investigators and the Eunice Kennedy Shriver National Institute of Child Health and Human Development Collaborative Pediatric Critical Care Research Network PICU COS Investigators.

SUBJECTS

Measures to assess outcome domains of the PICU COS are as follows: cognitive, emotional, overall (including health-related quality of life), physical, and family health. Measures evaluating social health were also considered.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Measures were classified as general or additional based on generalizability across PICU populations, feasibility, and relevance to specific COS domains. Measures with high consensus, defined as 80% agreement for inclusion, were selected for the PICU COMS. Among 140 candidate measures, 24 were delineated as general (broadly applicable) and, of these, 10 achieved consensus for inclusion in the COMS (7 patient-oriented and 3 family-oriented). Six of the seven patient measures were applicable to the broadest range of patients, diagnoses, and developmental abilities. All were validated in pediatric populations and have normative pediatric data. Twenty additional measures focusing on specific populations or in-depth evaluation of a COS subdomain also met consensus for inclusion as COMS additional measures.

CONCLUSIONS

The PICU COMS delineates measures to evaluate domains in the PICU COS and facilitates comparability across future research studies to characterize PICU survivorship and enable interventional studies to target long-term outcomes after critical illness.

A Clinician's Guide to Conducting Research on Causal Effects

Surgeons are uniquely poised to conduct research to improve patient care, yet a gap often exists between the clinician's desire to guide patient care with causal evidence and having adequate training necessary to produce causal evidence. This guide aims to address this gap by providing clinically relevant examples to illustrate necessary assumptions required for clinical research to produce causal estimates.

The association of severe pain experienced in the pediatric intensive care unit and postdischarge health-related quality of life: A retrospective cohort study

BACKGROUND

Pain may be a modifiable risk factor for lower health-related quality of life after pediatric critical illness.

AIM

To evaluate the association between severe pain experienced in the (pediatrc intensive care unit) and postdischarge health-related quality of life.

METHODS

This was a retrospective cohort study. Children aged 1 month to 18 years admitted to the pediatric intensive care unit and enrolled in the Seattle Children's Hospital Outcomes Assessment Program were included. Pain was assessed every 2 h by bedside nursing staff using a behavioral pain scale or numeric pain scale. A day of severe pain was defined as a pediatric intensive care unit day with ≥25% of pain scores ≥7/10. Baseline (preadmission) and postdischarge (median 6 weeks) health-related quality of life was assessed by the Pediatric Quality of Life Inventory (PedsQL™) or the Stein Jessop Functional Status II-R (FS II-R, for children with developmental disability). The cohort was stratified by diagnosis category (surgical vs. medical), and associations were measured using linear regression models.

RESULTS

Among 546 patients, 11.9% experienced ≥1 day of severe pain. In multivariable linear regression, each day of severe pain was independently associated with a lower postdischarge health-related quality of life score by 3.6 points (95% CI -6.3 to -0.9) adjusted for baseline health-related quality of life score, age, baseline cognitive function, days with multi-organ dysfunction, pediatric intensive care unit length of stay, and decline in overall function. This association was stronger among surgical patients than medical patients with each day of severe pain resulting in a lower postdischarge health-related quality of life score by 5.3 points (95% CI -9.6 to -0.9) versus 2.6 points (95% CI -5.8 to 0.6). Surgical patients had lower postdischarge emotional functioning than physical functioning subdomain scores.

CONCLUSIONS

Children who experience severe pain in the pediatric intensive care unit have lower postdischarge health-related quality of life adjusting for baseline health-related quality of life, particularly among children who have undergone surgery. Attention to pain management may be important to improve postdischarge health-related quality of life.

Health-Related Quality of Life Following Delirium in the PICU

OBJECTIVES

To evaluate whether delirium during pediatric critical illness is associated with post-discharge health-related quality of life.

DESIGN

Retrospective cohort study.

SETTING

Academic tertiary care center.

PATIENTS

Children 1 month to 18 years old admitted to the PICU or cardiac ICU and enrolled in the Seattle Children's Hospital Outcomes Assessment Program.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Delirium was assessed twice daily using the Cornell Assessment of Pediatric Delirium; a score greater than or equal to 9 (with fluctuating level of arousal for children with developmental disability) indicated delirium. Baseline (pre-admission) and post-discharge health-related quality of life were assessed by the Pediatric Quality of Life Inventory (Mapi Research Trust, Lyon, France) or the Functional Status II-R (for children with developmental disability). Among 534 patients, delirium was common (44%), as was clinically important decline in health-related quality of life (≥ 4.5 points) from baseline to follow-up (22%), measured at median 6.6 weeks post-hospital discharge (interquartile range, 5.1-8.5). On univariate analysis, children with delirium had similar likelihood of health-related quality of life decline compared with those without (25.5% vs 19.7%; p = 0.1). Using multivariable logistic regression adjusting for age, medical complexity, predicted risk of mortality, admission diagnosis, receipt of noninvasive ventilation, hospital length of stay, time to follow-up, and parent age, delirium was independently associated with health-related quality of life decline among children assessed by the Pediatric Quality of Life Inventory (adjusted odds ratio, 2.0; 95% CI, 1.1-3.5). Among children evaluated with the Functional Status II-R, delirium was not independently associated with health-related quality of life decline (odds ratio, 1.4; 95% CI, 0.6-3.2). In both groups, longer time to follow-up was also independently associated with improvements in health-related quality of life.

CONCLUSIONS

Delirium during the ICU stay is associated with decline in health-related quality of life from baseline to post-discharge follow-up among children assessed by the Pediatric Quality of Life Inventory, who were generally characterized by normal baseline cognitive function and less medical comorbidity. This association was not present among children assessed by the Functional Status II-R, potentially due to their higher overall risk of health-related quality of life decline, or other clinical differences that modify the effects of delirium in this group.

Factors Associated with Pediatric In-Hospital Recurrent Cardiac Arrest

The objective of this article was to identify demographic and clinical factors associated with early recurrent arrest (RA) (<48 hours) and late RA (≥48 hours) among pediatric inpatients following an initial in-hospital cardiac arrest. A retrospective cohort study of inpatients was performed in a free-standing academic quaternary care children's hospital. All inpatients were <18 years old with a cardiac arrest event requiring ≥1 minute of cardiopulmonary resuscitation with the return of spontaneous circulation sustained for ≥20 minutes at Seattle Children's Hospital from February 1, 2012 to September 18, 2019. Of the 237 included patients, 20 (8%) patients had an early RA and 30 (13%) had a late RA. Older age and severe pre-arrest acidosis were associated with a higher risk of early RA, odds ratios (OR) 1.2 (95% confidence interval [CI] 1.1–1.3) per additional year and 4.6 (95% CI 1.2–18.1), respectively. Pre-arrest organ dysfunction was also associated with a higher risk of early RA with an OR of 3.3 (95% CI 1.1–9.4) for respiratory dysfunction, OR 1.4 (95% CI 1.1–1.9) for each additional dysfunctional organ system, and OR 1.1 (95% CI 1–1.2) for every one-point increase in PELOD2 score. The neonatal illness category was associated with a lower risk of late RA, OR 0.3 (95% CI 0.1–0.97), and severe post-arrest acidosis was associated with a higher risk of late RA, OR 4.2 (95% CI 1.1–15). Several demographic and clinical factors offer some ability to identify children who sustain a recurrent cardiac arrest, offering a potential opportunity for intervention to prevent early recurrent arrest.

Health-related quality of life outcome measures for children surviving critical care: a scoping review

PURPOSE

Health-related quality of life (HRQL) has been identified as one of the core outcomes most important to assess following pediatric critical care, yet there are no data on the use of HRQL in pediatric critical care research. We aimed to determine the HRQL instruments most commonly used to assess children surviving critical care and describe study methodology, patient populations, and instrument characteristics to identify areas of deficiency and guide investigators conducting HRQL research.

METHODS

We queried PubMed, EMBASE, PsycINFO, Cumulative Index of Nursing and Allied Health Literature, and the Cochrane Registry for studies evaluating pediatric critical care survivors published 1970-2017. We used dual review for article selection and data extraction.

RESULTS

Of 60,349 citations, 66 articles met inclusion criteria. The majority of studies were observational (89.4%) and assessed HRQL at one post-discharge time-point (86.4%), and only 10.6% of studies included a baseline assessment. Time to the first follow-up assessment ranged from 1 month to 10 years post-hospitalization (median 3 years, IQR 0.5-6). For 26 prospective studies, the median follow-up time was 0.5 years [IQR 0.25-1]. Parent/guardian proxy-reporting was used in 83.3% of studies. Fifteen HRQL instruments were employed, with four used in >5% of articles: the Health Utility Index (n = 22 articles), the Pediatric Quality of Life Inventory (n = 17), the Child Health Questionnaire (n = 16), and the 36-Item Short Form Survey (n = 9).

CONCLUSION

HRQL assessment in pediatric critical care research has been centered around four instruments, though existing literature is limited by minimal longitudinal follow-up and infrequent assessment of baseline HRQL.

Epidemiology and Outcomes of ARDS After Pediatric Trauma

BACKGROUND

Results of recent studies suggest that the incidence and mortality of ARDS may be higher than previously thought in pediatric trauma patients. We conducted a systematic review of the literature on incidence, risk factors, prognostic factors, and outcomes of ARDS after pediatric trauma in the ICU.

METHODS

Medical literature databases were searched up to April 2020. Guidelines for reporting systematic reviews and meta-analyses were followed. Articles that reported quantitative data with regard to the incidence, risk factors, prognostic factors, mortality, or other outcomes for ARDS in subjects with pediatric trauma admitted to the ICU were included. Two authors independently screened and assessed eligibility of all identified studies, collected data, and assessed the methodological quality of selected studies. Data extraction was performed by using a standardized data extraction sheet. Quality assessment was performed by using the Newcastle-Ottawa scale for cohort studies. A meta-analysis was not performed because the studies used overlapping cohorts or different ARDS criteria.

RESULTS

Nine studies were included. The incidence was reported in 4 studies, risk factors in 1, mortality in 7, and other outcomes in 2. The largest cohort included 148,749 subjects from a national trauma database. The ARDS incidence was 1.8%-7.6% when using adult ARDS criteria, with 1.8% in the largest cohort, and 4.2% when using pediatric ARDS criteria. Mortality was 7.6%-22.9% when using adult ARDS criteria and 11.1%-34.0% when using the pediatric ARDS criteria. Identified risk factors included mechanism of injury, higher injury severity scores, abnormal breathing frequencies, and lower Glasgow coma scale scores at hospital presentation. ARDS was associated with a longer duration of mechanical ventilation, longer ICU and hospital length of stay, and a higher likelihood of requiring post-discharge care.

CONCLUSIONS

The ARDS incidence of 4.2% in the subjects with pediatric trauma in the ICU was comparable with 3.2% in the general pediatric ICU population; however, mortality associated with trauma-associated ARDS was higher and more commonly due to multi-system organ failure rather than hypoxemia.

Optimal Timing of Tracheostomy in Injured Adolescents

OBJECTIVES

To evaluate the optimal timing of tracheostomy for injured adolescents.

DESIGN

Retrospective cohort study.

SETTING

Trauma facilities in the United States.

PATIENTS

Adolescents (age 12-17 yr) in the National Trauma Data Bank (2007-2016) who were ventilated for greater than 24 hours and survived to discharge.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

After stratifying by traumatic brain injury diagnosis, we compared ICU and hospital length of stay, pneumonia, and discharge disposition of patients with tracheostomy prior to three cut points (3, 7, and 14 d after admission) to 1) patients intubated at least as long as each cut point and 2) patients with tracheostomy on or after each cut point. Of 11,045 patients, 1,391 (12.6%) underwent tracheostomy. Median time to tracheostomy was 9 days (interquartile range, 6-13 d) for traumatic brain injury and 7 days (interquartile range, 3-12 d) for nontraumatic brain injury patients. Nontraumatic brain injury patients with tracheostomy prior to 7 days had 5.6 fewer ICU days (-7.8 to -3.5 d) and 5.7 fewer hospital days (-8.8 to -2.7 d) than patients intubated greater than or equal to 7 days and had 14.8 fewer ICU days (-19.6 to -10.0 d) and 15.3 fewer hospital days (-21.7 to -8.9 d) than patients with tracheostomy greater than or equal to 7 days. Similar differences were observed at 14 days but not at 3 days for both traumatic brain injury and nontraumatic brain injury patients. At the 3- and 7-day cut points, both traumatic brain injury and nontraumatic brain injury patients with tracheostomy prior to the cut point had lower risk of pneumonia and risk of discharge to a facility than those with tracheostomy after the cut point.

CONCLUSIONS

For injured adolescents, tracheostomy less than 7 days after admission was associated with improved in-hospital outcomes compared with those who remained intubated greater than or equal to 7 days and with those with tracheostomy greater than or equal to 7 days. Tracheostomy between 3 and 7 days may be the optimal time point when prolonged need for mechanical ventilation is anticipated; however, unmeasured consequences of tracheostomy such as long-term complications and care needs must also be considered.

Association of Psychosocial Factors and Hospital Complications with Risk for Readmission After Trauma

BACKGROUND

Unplanned hospital readmissions are associated with morbidity and high cost. Existing literature on readmission after trauma has focused on how injury characteristics are associated with readmission. We aimed to evaluate how psychosocial determinants of health and complications of hospitalization combined with injury characteristics affect risk of readmission after trauma.

MATERIALS AND METHODS

We conducted a retrospective cohort study of adult trauma admissions from July 2015 to September 2017 to Harborview Medical Center in Seattle, Washington. We assessed patient, injury, and hospitalization characteristics and estimated associations between risk factors and unplanned 30-d readmission using multivariable generalized linear Poisson regression models.

RESULTS

Of 8916 discharged trauma patients, 330 (3.7%) had an unplanned 30-d readmission. Patients were most commonly readmitted with infection (41.5%). Independent risk factors for readmission among postoperative patients included public insurance (adjusted Relative Risk (aRR) 1.34, 95% CI 1.02-1.76), mental illness (aRR 1.39, 1.04-1.85), and chronic renal failure (aRR 2.17, 1.39-3.39); undergoing abdominal, thoracic, or neurosurgical procedures; experiencing an index hospitalization surgical site infection (aRR 4.74, 3.00-7.50), pulmonary embolism (aRR 3.38, 2.04-5.60), or unplanned ICU readmission (aRR 1.74, 1.16-2.62); shorter hospital stay (aRR 0.98/d, 0.97-0.99), and discharge to jail (aRR 4.68, 2.63-8.35) or a shelter (aRR 4.32, 2.58-7.21). Risk factors varied by reason for readmission. Injury severity, trauma mechanism, and body region were not independently associated with readmission risk.

CONCLUSIONS

Psychosocial factors and hospital complications were more strongly associated with readmission after trauma than injury characteristics. Improved social support and follow-up after discharge for high-risk patients may facilitate earlier identification of postdischarge complications.

Outcome Measures Following Critical Illness in Children With Disabilities: A Scoping Review

Children with disabilities compose a substantial portion of admissions and bed-days in the pediatric intensive care unit (PICU) and often experience readmissions over time. Impacts of a PICU admission on post-discharge health status may be difficult to distinguish from pre-existing disability in this population. Efforts to standardize outcome measures used for children with disabilities may help identify morbidities associated with PICU hospitalizations. Although a scoping review of outcome measures to assess children after episodes of critical illness has recently been published, it is not known to what extent these measures are appropriate for use in children with disabilities. This limits our ability to effectively measure long-term outcomes following critical illness in this important patient population. Through mixed methodology of scoping review and multi-stakeholder consensus, we aimed to identify and describe instruments previously utilized for this purpose and to explore additional tools for consideration. This yielded 51 measures across a variety of domains that have been utilized in the PICU setting and may be appropriate for use in children with disabilities. We describe characteristics of these instruments, including the type of developmental domains assessed, availability of population data, validation and considerations regarding administration in children with disabilities, and ease of availability of the instrument to researchers. Additionally, we suggest needed alterations or accommodations for these instruments to augment their utility in these populations, and highlight areas for future instrument development.

Mean Arterial Pressure and Discharge Outcomes in Severe Pediatric Traumatic Brain Injury

BACKGROUND AND OBJECTIVE

Optimizing blood pressure is an important target for intervention following pediatric traumatic brain injury (TBI). The existing literature has examined the association between systolic blood pressure (SBP) and outcomes. Mean arterial pressure (MAP) is a better measure of organ perfusion than SBP and is used to determine cerebral perfusion pressure but has not been previously examined in relation to outcomes after pediatric TBI. We aimed to evaluate the strength of association between MAP-based hypotension early after hospital admission and discharge outcome and to contrast the relative strength of association of hypotension with outcome between MAP-based and SBP-based blood pressure percentiles.

METHODS

We examined the association between lowest age-specific MAP percentile within 12 h after pediatric intensive care unit admission and poor discharge outcome (in-hospital death or transfer to a skilled nursing facility) in children with severe (Glasgow Coma Scale score < 9) TBI who survived at least 12 h. Poisson regression results were adjusted for maximum head Abbreviated Injury Scale (AIS) severity score, maximum nonhead AIS, and vasoactive medication use. We also examined the ability of lowest MAP percentile during the first 12 h to predict discharge outcomes using receiver operating curve characteristic analysis without adjustment for covariates. We contrasted the predictive ability and the relative strength of association of blood pressure with outcome between MAP and SBP percentiles.

RESULTS

Data from 166 children aged < 18 years were examined, of whom 20.4% had a poor discharge outcome. Poor discharge outcome was most common among patients with lowest MAP < 5th percentile (42.9%; aRR 5.3 vs. 50-94th percentile, 95% CI 1.2, 23.0) and MAP 5-9th percentile (40%; aRR 8.5, 95% CI 1.9, 38.7). Without adjustment for injury severity or vasoactive medication use, lowest MAP percentile was moderately predictive of poor discharge outcome (AUC: 0.75, 95% CI 0.66, 0.85). In contrast, lowest SBP was associated with poor discharge outcome only for the < 5th percentile (50%; aRR 5.4, 95% CI 1.3, 22.2). Lowest SBP percentile was moderately predictive of poor discharge outcome (AUC: 0.82, 95% CI 0.74, 0.91).

CONCLUSIONS

In children with severe TBI, a single MAP < 10th percentile during the first 12 h after Pediatric Intensive Care Unit admission was associated with poor discharge outcome. Lowest MAP percentile during the first 12 h was moderately predictive of poor discharge outcome. Lowest MAP percentile was more strongly associated with outcome than lowest SBP percentile but had slightly lower predictive ability than SBP.

Prediction of Pediatric Critical Care Resource Utilization for Disaster Triage

OBJECTIVES

Pediatric protocols to guide allocation of limited resources during a disaster lack data to validate their use. The 2011 Pediatric Emergency Mass Critical Care Task Force recommended that expected duration of critical care be incorporated into resource allocation algorithms. We aimed to determine whether currently available pediatric illness severity scores can predict duration of critical care resource use.

DESIGN

Retrospective cohort study.

SETTING

Seattle Children's Hospital.

PATIENTS

PICU patients admitted 2016-2018 for greater than or equal to 12 hours (n = 3,206).

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

We developed logistic and linear regression models in two-thirds of the cohort to predict need for and duration of PICU resources based on Pediatric Risk of Mortality-III, Pediatric Index of Mortality-3, and serial Pediatric Logistic Organ Dysfunction-2 scores. We tested the predictive accuracy of the models with the highest area under the receiver operating characteristic curve (need for each resource) and R (duration of use) in a validation cohort of the remaining one of three of the sample and among patients admitted during one-third of the sample and among patients admitted during surges of respiratory illness. Pediatric Logistic Organ Dysfunction score calculated 12 hours postadmission had higher predictive accuracy than either Pediatric Risk of Mortality or Pediatric Index of Mortality scores. Models incorporating 12-hour Pediatric Logistic Organ Dysfunction score, age, Pediatric Overall Performance Category, Pediatric Cerebral Performance Category, chronic mechanical ventilation, and postoperative status had an area under the receiver operating characteristic curve = 0.8831 for need for any PICU resource (positive predictive value 80.2%, negative predictive value 85.9%) and area under the receiver operating characteristic curve = 0.9157 for mechanical ventilation (positive predictive value 85.7%, negative predictive value 89.2%) within 7 days of admission. Models accurately predicted greater than or equal to 24 hours of any resource use for 78.9% of patients and greater than or equal to 24 hours of ventilation for 83.1%. Model fit and accuracy improved for prediction of resource use within 3 days of admission, and was lower for noninvasive positive pressure ventilation, vasoactive infusions, continuous renal replacement therapy, extracorporeal membrane oxygenation, and length of stay.

CONCLUSIONS

A model incorporating 12-hour Pediatric Logistic Organ Dysfunction score performed well in estimating how long patients may require PICU resources, especially mechanical ventilation. A pediatric disaster triage algorithm that includes both likelihood for survival and for requiring critical care resources could minimize subjectivity in resource allocation decision-making.

Race/Ethnicity and Informal Caregiver Burden After Traumatic Brain Injury: A Scoping Study

Background: Informal caregivers for persons with traumatic brain injury (TBI) face a range of unique issues, and racial/ethnic group differences in caregiver challenges are poorly understood. We undertook a scoping study of peer-reviewed literature to assess the quantity and quality of available research describing differences by race/ethnicity in informal caregiving roles and burden.

Methods: Using Arksey and O'Malley's framework and guided by the Preferred Reporting Items of Systematic Reviews and Meta-analyses Extension for Scoping Reviews, we conducted electronic searches of PubMed, CINAHL, PsycARTICLES, PsycINFO, Social Work Abstracts, Embase, and Scopus to identify peer-reviewed studies that examined TBI informal caregiver burden and reported on the influences of race or ethnicity.

Results: Among 4523 unique publications identified and screened, 11 studies included sufficient race/ethnicity data and were included in the analysis. Of these, six studies described civilian populations and five described military Veterans Affairs (VA). Included studies revealed that nonwhite caregivers and white caregivers use different approaches and coping strategies in their caregiving role. Some studies found differences in caregiver burden by race or ethnicity, others did not. Most were limited by a small sample size and overdependence on assessment tools not validated for the purposes or populations for which they were used. This was particularly true for race/ethnicity as a factor in TBI caregiver burden in VA groups, where essential characteristics moderate the association of race/ethnicity with socioeconomic factors.

Conclusions: This scoping study highlights the paucity of information on race/ethnicity as a factor in TBI caregiver burden and roles, and suggests that innovative and alternative approaches to research are needed to explore needed changes in practice.

Association between age and acute respiratory distress syndrome development and mortality following trauma

BACKGROUND

Improved understanding of the relationship between patient age and acute respiratory distress syndrome (ARDS) development and mortality following traumatic injury may help facilitate generation of new hypotheses about ARDS pathophysiology and the role of novel treatments to improve outcomes across the age spectrum.

METHODS

We conducted a retrospective cohort study of trauma patients included in the National Trauma Data Bank who were admitted to an intensive care unit from 2007 to 2016. We determined ARDS incidence and mortality across eight age groups for the entire 10-year study period and by year. We used generalized linear Poisson regression models adjusted for underlying mortality risk (injury mechanism, Injury Severity Score, admission Glasgow Coma Scale score, admission heart rate, and admission hypotension).

RESULTS

Acute respiratory distress syndrome occurred in 3.1% of 1,297,190 trauma encounters. Acute respiratory distress syndrome incidence was lowest among pediatric patients and highest among adults aged 35 to 64 years. Acute respiratory distress syndrome mortality was highest among patients 80 years or older (43.9%), followed by 65 to 79 years (30.6%) and 4 years or younger (25.3%). The relative risk of mortality associated with ARDS was highest among the pediatric age groups, with an adjusted relative risk (aRR) of 2.06 (95% confidence interval [CI], 1.72-2.70) among patients 4 years or younger compared with an aRR of 1.51 (95% CI, 1.42-1.62) for the entire cohort. Acute respiratory distress syndrome mortality increased over the 10-year study period (aRR, 1.03 per year; 95% CI, 1.02-1.05 per year), whereas all-cause mortality decreased (aRR, 0.98 per year; 95% CI, 0.98-0.99 per year).

CONCLUSIONS

While ARDS development following traumatic injury was most common in middle-aged adults, patients 4 years or younger and 65 years or older with ARDS experienced the highest burden of mortality. Children 4 years or younger were disproportionately affected by ARDS relative to their low underlying mortality following trauma that was not complicated by ARDS. Acute respiratory distress syndrome-associated mortality following trauma has worsened over the past decade, emphasizing the need for new prevention and treatment strategies.

LEVEL OF EVIDENCE

Prognostic/epidemiological study, level III.

Risk Factors for Functional Decline and Impaired Quality of Life after Pediatric Respiratory Failure

Rationale: Poor outcomes of adults surviving critical illness are well documented, but data in children are limited.Objectives: To identify factors associated with worse postdischarge function and health-related quality of life (HRQL) after pediatric acute respiratory failure.Methods: We assessed functional status at baseline, discharge, and 6 months after pediatric ICU discharge and HRQL 6 months after discharge in 2-week- to 17-year-olds mechanically ventilated for acute respiratory failure in the RESTORE (Randomized Evaluation of Sedation Titration for Respiratory Failure) trial. We assessed HRQL via Infant and Toddler Quality of Life Questionnaire-97 (<2 yr old) or Pediatric Quality of Life Inventory (≥2 yr old). We categorized patients with normal baseline function as having impaired HRQL if scores were greater than 1 SD below mean norms for Infant and Toddler Quality of Life Questionnaire-97 growth and development or Pediatric Quality of Life Inventory total score.Measurements and Main Results: One-fifth (n = 192) of 949 patients declined in function from baseline to postdischarge; 20% (55/271) had impaired growth and development; 19% (64/343) had impaired HRQL. In multivariable analyses, decline in function was associated with baseline impaired function, prematurity, cancer, respiratory failure etiology, ventilation duration, and clonidine (odds ratio [OR] = 2.14; 95% confidence interval [CI] = 1.22-3.76). Independent predictors of impaired growth and development included methadone (OR = 2.27; 95% CI = 1.18-4.36) and inadequate pain management (OR = 2.94; 95% CI = 1.39-6.19). Impaired HRQL was associated with older age, non-white or Hispanic race, cancer, and inadequate sedation management (OR = 3.15; 95% CI = 1.74-5.72).Conclusions: Postdischarge morbidity after respiratory failure is common and associated with admission factors, exposure to critical care therapies, and pain and sedation management.

Agreement Between Arterial Carbon Dioxide Levels With End-Tidal Carbon Dioxide Levels and Associated Factors in Children Hospitalized With Traumatic Brain Injury

IMPORTANCE

Alterations in the partial pressure of carbon dioxide, arterial (Paco2) can affect cerebral perfusion after traumatic brain injury. End-tidal carbon dioxide (EtCO2) monitoring is a noninvasive tool used to estimate Paco2 values.

OBJECTIVE

To examine the agreement between Paco2 and EtCO2 and associated factors in children with traumatic brain injury.

DESIGN, SETTING, AND PARTICIPANTS

A secondary analysis was conducted using data from a prospective cohort study of 137 patients younger than 18 years with traumatic brain injury who were admitted to the pediatric intensive care unit of a level I trauma center between May 1, 2011, and July 31, 2017. Analysis was performed from December 17, 2018, to January 10, 2019.

MAIN OUTCOMES AND MEASURES

The closest EtCO2 value obtained within 30 minutes of a Paco2 value and the closest systolic blood pressure value obtained within 60 minutes prior to a Paco2 value during the first 24 hours after admission were recorded. The main outcome of Paco2-EtCO2 agreement was defined as Paco2 between 0 and 5 mm Hg greater than the paired EtCO2 value, and it was determined using Bland-Altman analysis, Passing and Bablok regression, and the Pearson correlation coefficient. Multivariable regression models determined which factors were associated with agreement.

RESULTS

The analysis included 137 patients (34 girls and 103 boys; mean [SD] age, 10.0 [6.3] years) and 445 paired Paco2-EtCO2 data points. On average, Paco2 was 2.7 mm Hg (95% limits of agreement, -11.3 to 16.7) higher than EtCO2. Overall, 187 of all Paco2-EtCO2 pairs (42.0%) agreed. There was larger variation in the Paco2-EtCO2 difference during the first 8 hours compared with 9 to 24 hours after admission to the pediatric intensive care unit. Development of pediatric acute respiratory distress syndrome within 24 hours of admission was associated with a lower likelihood of Paco2-EtCO2 agreement (adjusted odds ratio, 0.20; 95% CI, 0.08-0.51) compared with no development of pediatric acute respiratory distress syndrome. A diagnosis of pediatric acute respiratory distress syndrome 1 to 7 days after admission was associated with a larger first-day Paco2-EtCO2 difference compared with those who never developed pediatric acute respiratory distress syndrome (mean [SD] difference, 4.48 [3.70] vs 0.46 [5.50] mm Hg).

CONCLUSIONS AND RELEVANCE

In this study of pediatric traumatic brain injury, Paco2-EtCO2 agreement was low, especially among patients with pediatric acute respiratory distress syndrome. Low Paco2-EtCO2 agreement early in hospitalization may be associated with future development of pediatric acute respiratory distress syndrome. Data on EtCO2 should not be substituted for data on Paco2 during the first 24 hours.

C septicum Complicating Hemolytic Uremic Syndrome: Survival Without Surgical Intervention

Clostridium septicum is an anaerobic bacterium that causes rapidly progressive myonecrosis, bacteremia, and central nervous system infection. It has been reported as a complication of Escherichia coli hemolytic uremic syndrome (HUS) in 8 children worldwide; 5 children died, and the 3 reported survivors had surgically treated disease. We present 3 cases of C septicum complicating HUS in children, including the first 2 reported cases of survival without surgical intervention. All patients presented with classic cases of HUS with initial clinical improvement followed by deterioration. Patient 1 had rising fever, tachycardia, and severe abdominal pain 24 hours after admission. She developed large multifocal intraparenchymal cerebral hemorrhages and died 12 hours later. Autopsy revealed C septicum intestinal necrosis, myonecrosis, and encephalitis. Patient 2 had new fever, increasing leukocytosis, and severe abdominal pain on hospital day 4. She was diagnosed with C septicum bacteremia and treated with metronidazole, meropenem, and clindamycin. Patient 3 had new fever and increasing leukocytosis on hospital day 3; blood cultures grew C septicum, and she was treated with penicillin. Patients 2 and 3 improved rapidly and did not require surgery. C septicum is a potential co-infection with E coli It thrives in the anaerobic environment of E coli-damaged intestinal mucosa and translocates to cause systemic infection. Fever, tachycardia, a rising white blood cell count, and abdominal pain out of proportion to examination are key findings for which physicians should be vigilant. Timely evaluation by anaerobic blood culture and early initiation of antibiotics are necessary to prevent fatalities.