Alveolar dead space fraction is not associated with early RV systolic dysfunction in pediatric ARDS.

2023

559-565

02/2023

1099-0496

PRIMARY HYPOTHESIS: We hypothesized that higher alveolar dead space fraction (AVDSf) at pediatric acute respiratory distress syndrome (PARDS) onset would be associated with right ventricular (RV) systolic dysfunction within the first 24 h of PARDS.

STUDY DESIGN AND METHODS: We performed a retrospective single-center cohort study of PARDS patients with clinically obtained echocardiograms within 24 h. Primary exposure was AVDSf at PARDS onset. Primary outcome was RV systolic dysfunction as defined by RV global longitudinal strain (GLS) (>-18%). Secondary outcomes included pulmonary hypertension (PH) and RV systolic dysfunction as defined by other echocardiogram parameters, and measures of oxygenation. Unadjusted and adjusted logistic and linear regression were used to investigate AVDSf associations with outcomes.

RESULTS: Ninety-one patients were included: median age 6.2 years, 46% female, and 65% with moderate or severe PARDS. Median AVDSf was 0.2 (interquartile range [IQR] 0.0-0.3), 33% had RV dysfunction, and 21% had PH. Unadjusted and adjusted logistic regression showed no association between AVDSf and RV systolic dysfunction or PH by any echocardiographic measure, but unadjusted and adjusted linear regression did show an association between AVDSf and PaO /FiO .

CONCLUSION: AVDSf at PARDS onset was not associated with RV systolic dysfunction or PH within 24 h but was associated with PaO /FiO ratio and may be more reflective of pulmonary causes of ventilation-perfusion mismatch. Future investigations should focus on clarifying the clinical utility of AVDSf in relation to existing metrics throughout the course of PARDS.

10.1002/ppul.26237

Pediatr Pulmonol

36349816

Guidance for Cardiopulmonary Resuscitation of Children With Suspected or Confirmed COVID-19.

2022

07/2022

1098-4275

This document aims to provide guidance to healthcare workers for the provision of basic and advanced life support to children and neonates with suspected or confirmed COVID-19. It aligns with the 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care while providing strategies for reducing risk of transmission of SARS-CoV-2 to healthcare providers. Patients with suspected or confirmed COVID-19 and cardiac arrest should receive chest compressions and defibrillation, when indicated, as soon as possible. Due to the importance of ventilation during pediatric and neonatal resuscitation, oxygenation and ventilation should be prioritized. All CPR events should therefore be considered aerosol-generating procedures (AGPs). Thus, personal protective equipment (PPE) appropriate for AGPs (including N95 respirators or an equivalent) should be donned prior to resuscitation and high-efficiency particulate air (HEPA) filters should be utilized. Any personnel without appropriate PPE should be immediately excused by providers wearing appropriate PPE. Neonatal resuscitation guidance is unchanged from standard algorithms except for specific attention to infection prevention and control. In summary, healthcare personnel should continue to reduce the risk of SARS-CoV-2 transmission through vaccination and use of appropriate PPE during pediatric resuscitations. Healthcare organizations should ensure the availability and appropriate use of PPE. As delays or withheld CPR increases the risk to patients for poor clinical outcomes, children and neonates with suspected or confirmed COVID-19 should receive prompt, high-quality CPR in accordance with evidence-based guidelines.

10.1542/peds.2021-056043

Pediatrics

35818123

Compression-Only Versus Rescue-Breathing Cardiopulmonary Resuscitation After Pediatric Out-of-Hospital Cardiac Arrest.

2021

1042-1052

2021 Sep 07

1558-3597

<p><strong>BACKGROUND: </strong>There are conflicting data regarding the benefit of compression-only bystander cardiopulmonary resuscitation (CO-CPR) compared with CPR with rescue breathing (RB-CPR) after pediatric out-of-hospital cardiac arrest (OHCA).</p>

<p><strong>OBJECTIVES: </strong>This study sought to test the hypothesis that RB-CPR is associated with improved neurologically favorable survival compared with CO-CPR following pediatric OHCA, and to characterize age-stratified outcomes with CPR type compared with no bystander CPR (NO-CPR).</p>

<p><strong>METHODS: </strong>Analysis of the CARES registry (Cardiac Arrest Registry to Enhance Survival) for nontraumatic pediatric OHCAs (patients aged&nbsp;≤18 years) from 2013-2019 was performed. Age groups included infants (&lt;1 year), children (1 to 11 years), and adolescents (≥12 years). The primary outcome was neurologically favorable survival at hospital discharge.</p>

<p><strong>RESULTS: </strong>Of 13,060 pediatric OHCAs, 46.5% received bystander CPR. CO-CPR was the most common bystander CPR type. In the overall cohort, neurologically favorable survival was associated with RB-CPR (adjusted OR: 2.16; 95%&nbsp;CI: 1.78-2.62) and CO-CPR (adjusted OR: 1.61; 95%&nbsp;CI: 1.34-1.94) compared with NO-CPR. RB-CPR was associated with a higher odds of neurologically favorable survival compared with CO-CPR (adjusted OR: 1.36; 95%&nbsp;CI: 1.10-1.68). In age-stratified analysis, RB-CPR was associated with better neurologically favorable survival versus NO-CPR in all age groups. CO-CPR was associated with better neurologically favorable survival compared with NO-CPR in children and adolescents, but not in infants.</p>

<p><strong>CONCLUSIONS: </strong>CO-CPR was the most common type of bystander CPR in pediatric OHCA. RB-CPR was associated with better outcomes compared with CO-CPR. These results support present guidelines for RB-CPR as the preferred CPR modality for pediatric OHCA.</p>

10.1016/j.jacc.2021.06.042

J Am Coll Cardiol

34474737

Race/Ethnicity and Neighborhood Characteristics Are Associated With Bystander Cardiopulmonary Resuscitation in Pediatric Out-of-Hospital Cardiac Arrest in the United States: A Study From CARES.

2019

e012637

2019 Jul 16

2047-9980

<p>Background Whether racial and neighborhood characteristics are associated with bystander cardiopulmonary resuscitation ( BCPR ) in pediatric out-of-hospital cardiac arrest ( OHCA ) is unknown. Methods and Results An analysis was conducted of CARES (Cardiac Arrest Registry to Enhance Survival) for pediatric nontraumatic OHCA s from 2013 to 2017. An index (range, 0-4) was created for each arrest based on neighborhood characteristics associated with low BCPR (&gt;80% black; &gt;10% unemployment; &lt;80% high school; median income, &lt;$50&nbsp;000). The primary outcome was BCPR . BCPR occurred in 3399 of 7086 OHCA s (48%). Compared with white children, BCPR was less likely in other races/ethnicities (black: adjusted odds ratio [ aOR ], 0.59; 95% CI , 0.52-0.68; Hispanic: aOR , 0.78; 95% CI , 0.66-0.94; and other: aOR , 0.54; 95% CI , 0.40-0.72). Compared with arrests in neighborhoods with an index score of 0, BCPR occurred less commonly for arrests with an index score of 1 ( aOR , 0.80; 95% CI , 0.70-0.91), 2 ( aOR , 0.75; 95% CI , 0.65-0.86), 3 ( aOR , 0.52; 95% CI , 0.45-0.61), and 4 ( aOR , 0.46; 95% CI , 0.36-0.59). Black children had an incrementally lower likelihood of BCPR with increasing index score while white children had an overall similar likelihood at most scores. Black children with an index of 4 were approximately half as likely to receive BCPR compared with white children with a score of 0. Conclusions Racial and neighborhood characteristics are associated with BCPR in pediatric OHCA . Targeted CPR training for nonwhite, low-education, and low-income neighborhoods may increase BCPR and improve pediatric OHCA outcomes.</p>

10.1161/JAHA.119.012637

J Am Heart Assoc

31288613

Identification of Predictive Biomarkers for Cytokine Release Syndrome after Chimeric Antigen Receptor T-cell Therapy for Acute Lymphoblastic Leukemia.

2016

664-79

2016 06

2159-8290

<p><strong>UNLABELLED: </strong>Chimeric antigen receptor (CAR)-modified T cells with anti-CD19 specificity are a highly effective novel immune therapy for relapsed/refractory acute lymphoblastic leukemia. Cytokine release syndrome (CRS) is the most significant and life-threatening toxicity. To improve understanding of CRS, we measured cytokines and clinical biomarkers in 51 CTL019-treated patients. Peak levels of 24 cytokines, including IFNγ, IL6, sgp130, and sIL6R, in the first month after infusion were highly associated with severe CRS. Using regression modeling, we could accurately predict which patients would develop severe CRS with a signature composed of three cytokines. Results were validated in an independent cohort. Changes in serum biochemical markers, including C-reactive protein and ferritin, were associated with CRS but failed to predict development of severe CRS. These comprehensive profiling data provide novel insights into CRS biology and, importantly, represent the first data that can accurately predict which patients have a high probability of becoming critically ill.</p>

<p><strong>SIGNIFICANCE: </strong>CRS is the most common severe toxicity seen after CAR T-cell treatment. We developed models that can accurately predict which patients are likely to develop severe CRS before they become critically ill, which improves understanding of CRS biology and may guide future cytokine-directed therapy. Cancer Discov; 6(6); 664-79. ©2016 AACR.See related commentary by Rouce and Heslop, p. 579This article is highlighted in the In This Issue feature, p. 561.</p>

10.1158/2159-8290.CD-16-0040

Cancer Discov

27076371

Association of Bystander Cardiopulmonary Resuscitation With Overall and Neurologically Favorable Survival After Pediatric Out-of-Hospital Cardiac Arrest in the United States

2016

2016 Nov 12

2168-6211

<p><strong>Importance: </strong>There are few data on the prevalence or outcome of bystander cardiopulmonary resuscitation (BCPR) in children 18 years and younger.</p>

<p><strong>Objective: </strong>To characterize BCPR in pediatric out-of-hospital cardiac arrests (OHCAs).</p>

<p><strong>Design, Setting, and Participants: </strong>This analysis of the Cardiac Arrest Registry to Enhance Survival database investigated nontraumatic OHCAs in children 18 years and younger from January 2013 through December 2015.</p>

<p><strong>Exposures: </strong>Bystander CPR, which included conventional CPR and compression-only CPR.</p>

<p><strong>Main Outcomes and Measures: </strong>Overall survival and neurologically favorable survival, defined as a Cerebral Performance Category score of 1 or 2, at the time of hospital discharge.</p>

<p><strong>Results: </strong>Of the 3900 children younger than 18 years with OHCA, 2317 (59.4%) were infants, 2346 (60.2%) were female, and 3595 (92.2%) had nonshockable rhythms. Bystander CPR was performed on 1814 children (46.5%) and was more common for white children (687 of 1221 [56.3%]) compared with African American children (447 of 1134 [39.4%]) and Hispanic children (197 of 455 [43.3%]) (P &lt; .001). Overall survival and neurologically favorable survival were 11.3% (440 of 3900) and 9.1% (354 of 3900), respectively. On multivariable analysis, BCPR was independently associated with improved overall survival (adjusted proportion, 13.2%; 95% CI, 11.81-14.58; adjusted odds ratio, 1.57; 95% CI, 1.25-1.96) and neurologically favorable survival (adjusted proportion, 10.3%; 95% CI, 9.10-11.54; adjusted odds ratio, 1.50; 95% CI, 1.21-1.98) compared with no BCPR (overall survival: adjusted proportion, 9.5%; 95% CI, 8.28-10.69; neurologically favorable survival: adjusted proportion, 7.59%; 95% CI, 6.50-8.68). For those with data on type of BCPR, 697 of 1411 (49.4%) received conventional CPR and 714 of 1411 (50.6%) received compression-only CPR. On multivariable analysis, only conventional CPR (adjusted proportion, 12.89%; 95% CI, 10.69-15.09; adjusted odds ratio, 2.06; 95% CI, 1.51-2.79) was associated with improved neurologically favorable survival compared with no BCPR (adjusted proportion, 9.59%; 95% CI, 6.45-8.61). There was a significant interaction of BCPR with age. Among infants, conventional BCPR was associated with improved overall survival and neurologically favorable survival while compression-only CPR had similar outcomes to no BCPR.</p>

<p><strong>Conclusions and Relevance: </strong>Bystander CPR is associated with improved outcomes in pediatric OHCAs. Improving the provision of BCPR in minority communities and increasing the use of conventional BCPR may improve outcomes for children with OHCA.</p>

10.1001/jamapediatrics.2016.3643

JAMA Pediatr

27837587

Pediatric Medical Emergency Team Events and Outcomes: A Report of 3647 Events From the American Heart Association's Get With the Guidelines-Resuscitation Registry.

2016

57-64

2016 Feb

2154-1663

<p><strong>OBJECTIVES: </strong>To describe the clinical characteristics and outcomes of a large, multicenter cohort of pediatric medical emergency team (MET) events occurring in US hospitals reported to the American Heart Association's Get With the Guidelines-Resuscitation registry.</p>

<p><strong>METHODS: </strong>We analyzed consecutive pediatric (&lt;18 years) MET events reported to the registry from January 2006 to February 2012.</p>

<p><strong>RESULTS: </strong>We identified 3647 MET events from 151 US hospitals: 3080 (84%) ward and 567 (16%) telemetry/step-down unit events; median age 3.0 years (interquartile range: 0.0-11.0); 54% male; median duration 29 minutes (interquartile range: 18-49). Triggers included decreased oxygen saturation (32%), difficulty breathing (26%), and staff concern (24%). Thirty-seven percent (1137/3059) were admitted within 24 hours before MET event. Within 24 hours before the MET event, 16% were transferred from a PICU, 24% from an emergency department, and 7% from a pediatric anesthesia care unit. Fifty-three percent of MET events resulted in transfer to a PICU; 3251 (89%) received nonpharmacologic interventions, 2135 (59%) received pharmacologic interventions, 223 (6.1%) progressed to an acute respiratory compromise event, and 17 events (0.5%) escalated to cardiopulmonary arrest during the event. Survival to hospital discharge was 93.3% (n=3299/3536).</p>

<p><strong>CONCLUSIONS: </strong>Few pediatric MET events progress to respiratory or cardiac arrest, but most require nonpharmacologic and pharmacologic intervention. Median duration of MET event was 29 minutes (interquartile range: 18-49), and 53% required transfer to a PICU. Events often occurred within 24 hours after hospital admission or transfer from the PICU, emergency department, or pediatric anesthesia care unit and may represent an opportunity to improve triage and other systems of care.</p>

10.1542/hpeds.2015-0132

Hosp Pediatr

26813980

A pragmatic checklist to identify pediatric ICU patients at risk for cardiac arrest or code bell activation.

2016

33-7

2016 Feb

1873-1570

<p><strong>BACKGROUND: </strong>In-hospital cardiac arrest is a rare event associated with significant morbidity and mortality. The ability to identify the ICU patients at risk for cardiac arrest could allow the clinical team to prepare staff and equipment in anticipation.</p>

<p><strong>METHODS: </strong>This pilot study was completed at a large tertiary care pediatric intensive care unit to determine the feasibility of a simple checklist of clinical variables to predict deterioration. The daily checklist assessed patient risk for critical deterioration defined as cardiac arrest or code bell activation within 24h of the checklist screen. The Phase I checklist was developed by expert consensus and evaluated to determine standard diagnostic test performance. A modified Phase II checklist was developed to prospectively test the feasibility and bedside provider "number needed to train".</p>

<p><strong>RESULTS: </strong>For identifying patients requiring code bell activation, both checklists demonstrated a sensitivity of 100% with specificity of 76.0% during Phase I and 97.7% during Phase II. The positive likelihood ratio improved from 4.2 to 43.7. For identifying patients that had a cardiac arrest within 24h, the Phase I and II checklists demonstrated a sensitivity of 100% with specificity again improving from 75.7% to 97.6%. There was an improved positive likelihood ratio from 4.1 in Phase I to 41.9 in Phase II, with improvement of "number needed to train" from 149 to 7.4 providers.</p>

<p><strong>CONCLUSIONS: </strong>A novel high-risk clinical indicators checklist is feasible and provides timely and accurate identification of the ICU patients at risk for cardiac arrest or code bell activation.</p>

10.1016/j.resuscitation.2015.11.017

Resuscitation

26703460

Cytokine release syndrome after blinatumomab treatment related to abnormal macrophage activation and ameliorated with cytokine-directed therapy.

2013

5154-7

2013 Jun 27

1528-0020

<p>Blinatumomab is a CD19/CD3-bispecific T-cell receptor-engaging (BiTE) antibody with efficacy in refractory B-precursor acute lymphoblastic leukemia. Some patients treated with blinatumomab and other T cell-activating therapies develop cytokine release syndrome (CRS). We hypothesized that patients with more severe toxicity may experience abnormal macrophage activation triggered by the release of cytokines by T-cell receptor-activated cytotoxic T cells engaged by BiTE antibodies and leading to hemophagocytic lymphohistiocytosis (HLH). We prospectively monitored a patient during blinatumomab treatment and observed that he developed HLH. He became ill 36 hours into the infusion with fever, respiratory failure, and circulatory collapse. He developed hyperferritinemia, cytopenias, hypofibrinogenemia, and a cytokine profile diagnostic for HLH. The HLH continued to progress after discontinuation of blinatumomab; however, he had rapid improvement after IL-6 receptor-directed therapy with tocilizumab. Patients treated with T cell-activating therapies, including blinatumomab, should be monitored for HLH, and cytokine-directed therapy may be considered in cases of life-threatening CRS. This trial was registered at www.clinicaltrials.gov as #NCT00103285.</p>

10.1182/blood-2013-02-485623

Blood

23678006

Correlations between first documented cardiac rhythms and preceding telemetry in patients with code blue events.

2013

225-8

2013 Apr

1553-5606

<p><strong>BACKGROUND: </strong>Among in-hospital cardiac arrest (IHCA) patients, the first cardiac rhythm documented on resuscitation records (FDR) is often used as a surrogate for arrest etiology. Although the FDR generally represents the electrical activity at the time of cardiopulmonary resuscitation initiation, it may not be the ideal rhythm to infer the arrest etiology. We hypothesized that a rhythm present earlier-at the time of the code blue call-would frequently differ from the FDR, because the FDR might represent the later stage of a progressive cardiopulmonary process.</p>

<p><strong>OBJECTIVE: </strong>To evaluate agreement between FDR and telemetry rhythm at the time of code blue call.</p>

<p><strong>DESIGN: </strong>Cross-sectional study.</p>

<p><strong>SETTING: </strong>A 750-bed adult tertiary care hospital and a 240-bed adult inner city community hospital.</p>

<p><strong>PATIENTS: </strong>Adult general ward patients monitored on the hospital's telemetry system during the 2 minutes prior to a code blue call for IHCA.</p>

<p><strong>INTERVENTION: </strong>None.</p>

<p><strong>MEASUREMENTS: </strong>Agreement between FDR and telemetry rhythm.</p>

<p><strong>RESULTS: </strong>Among 69 IHCAs, agreement between FDR and telemetry was 65% (kappa = 0.37). Among 17 events with FDRs of ventricular tachyarrhythmia (VTA), telemetry showed VTA in 12 (71%) and other organized rhythms in 5 (29%). Among 12 events with first documented rhythms of asystole, telemetry showed asystole in 3 (25%), VTA in 1 (8%), and other organized rhythms in 8 (67%).</p>

<p><strong>CONCLUSIONS: </strong>The FDR had only fair agreement with the telemetry rhythm at the time of code blue call. The telemetry rhythm may be a useful adjunct to the FDR when investigating arrest etiology.</p>

10.1002/jhm.2028

J Hosp Med

23495109