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Objective: The objective of this study is to identify the top five most influential papers published on the use of point-of-care ultrasound (POCUS) in cardiac arrest and the top five most influential papers on the use of POCUS in shock in adult patients., Methods: An expert panel of 14 members was recruited from the Canadian Association of Emergency Physicians (CAEP) Emergency Ultrasound Committee and the Canadian Ultrasound Fellowship Collaborative. The members of the panel are ultrasound fellowship trained or equivalent, are engaged in POCUS research, and are leaders in POCUS locally and nationally in Canada. A modified Delphi process was used, consisting of three rounds of sequential surveys and discussion to achieve consensus on the top five most influential papers for the use of POCUS in cardiac arrest and shock., Results: The panel identified 39 relevant papers on POCUS in cardiac arrest and 42 relevant papers on POCUS in shock. All panel members participated in all three rounds of the modified Delphi process, and we ultimately identified the top five most influential papers on POCUS in cardiac arrest and also on POCUS in shock. Studies include descriptions and analysis of safe POCUS protocols that add value from a diagnostic and prognostic perspective in both populations during resuscitation., Conclusion: We have developed a reading list of the top five influential papers on the use of POCUS in cardiac arrest and shock to better inform residents, fellows, clinicians, and researchers on integrating and studying POCUS in a more evidence-based manner., (© 2023. The Author(s), under exclusive licence to Canadian Association of Emergency Physicians (CAEP)/ Association Canadienne de Médecine d'Urgence (ACMU).)

Objectives: To determine if data collected through digital charting are more complete and more accurate compared to traditional paper-based charting during simulated pediatric cardiac arrest., Methods: We performed a single-center simulation-based randomized controlled trial. Participants were randomized to a novel handheld digital charting device (intervention group) or to the standard resuscitation paper chart (control group). Participants documented two 15-min simulated pediatric cardiac arrest scenarios. We compared the charting completeness between the two groups. Completeness score (primary outcome) was established by calculating a completeness score for each group based on a list of pre-determined critical tasks. Charting accuracy (secondary outcome) was compared between the two groups, defined as the time interval between the real-time task performance and charted time., Results: Charting data from 34 simulated cardiac arrest events were included in the analysis (n = 18 intervention; n = 16 control). The paper charting group had a higher completeness score (median (IQR) paper vs digital: 72.0% (66.4-76.9%) vs 65.0% (58.5-66.4%), p = 0.015). For accuracy, the digital charting group was superior to the paper charting group for all pre-established critical tasks., Conclusion: Compared to paper-based charting, digital charting group captured more critical tasks during pediatric simulated resuscitation and was more accurate in the time intervals between real-time tasks performance and charted time. For tasks charted, paper-based charting was significantly more complete and more detailed during simulated pediatric cardiac arrest., (© 2023. The Author(s), under exclusive licence to Canadian Association of Emergency Physicians (CAEP)/ Association Canadienne de Médecine d'Urgence (ACMU).)

In order to improve the comprehensive ability of China sudden cardiac death prevention and rescue, the Expert Committee of China Sudden Cardiac Death Prevention and Rescue System Construction organized 100 experts and scholars in the field of cardiopulmonary resuscitation to form Blue paper of China sudden cardiac death prevention and rescue system construction (2022). It mainly includes three parts: the organizational structure of the sudden cardiac death prevention and rescue system, the main functions of the sudden cardiac death prevention and rescue system, and the key projects of the sudden cardiac death prevention and rescue system. It is hoped that the China sudden cardiac death prevention and rescue system will be established to serve the life and health of the people wholeheartedly.

Approximately 10% of patients resuscitated from out-of-hospital cardiac arrest survive to hospital discharge. Improved management to improve outcomes is required, and it is proposed that such patients should be preferentially treated in cardiac arrest centres. The minimum requirements of therapy modalities for the cardiac arrest centre are 24/7 availability of an on-site coronary angiography laboratory, an emergency department, an intensive care unit, imaging facilities such as echocardiography, computed tomography and magnetic resonance imaging, and a protocol outlining transfer of selected patients to cardiac arrest centres with additional resources (out-of-hospital cardiac arrest hub hospitals). These hub hospitals are regularly treating a high volume of patients and offer further treatment modalities. This consensus document describes the aims, the minimal requirements for therapeutic modalities and expertise, and the structure, of a cardiac arrest centre. It represents a consensus among the major European medical associations and societies involved in the treatment of out-of-hospital cardiac arrest patients.

Introduction: An electronic resuscitation system, implemented in 2015, within electronic patient records (EPR) at King's College Hospital NHS Foundation Trust was studied, aiming to review and improve decision documentation and communication., Method: The study (January 2018 - June 2018) included all gerontology inpatients with electronic do not attempt cardiopulmonary resuscitation (e-DNACPR) decisions. Cases were identified weekly, followed by retrospective analysis of discharges. Amendments to the electronic system and improvements were implemented between cycles. CYCLE 1: One-hundred and thirty-three patients were included; 85% had an e-DNACPR form; 86% of all forms had senior doctor involvement; 68% evidenced patient/relative discussion; 13% documented multidisciplinary team (MDT) discussion., Interventions: A mandatory 'named nurse' field was added to the form and trust-wide education programme implemented. CYCLE 2: One-hundred and twenty-six patients were included; 100% had an e-DNACPR form; 93% evidenced senior doctor involvement; 71% evidenced patient/relative discussion; 57% documented MDT discussion., Conclusion: Changes to the process and trust-wide education resulted in more robust documentation and communication., (© Royal College of Physicians 2020. All rights reserved.)

Background: Neurological injuries remain the leading cause of death in comatose patients resuscitated from out-of-hospital cardiac arrest (OHCA). Adequate blood pressure is of paramount importance to optimize cerebral perfusion and to minimize secondary brain injury. Markers measuring global cerebral ischemia caused by cardiac arrest and consecutive resuscitation and reflecting the metabolic variations after successful resuscitation are needed to assist a more individualized post-resuscitation care. Currently, no technique is available for bedside evaluation of global cerebral energy state, and until now blood pressure targets have been based on limited clinical evidence. Recent experimental and clinical studies indicate that it might be possible to evaluate cerebral oxidative metabolism from measuring the lactate-to-pyruvate (LP) ratio of the draining venous blood. In this study, jugular bulb microdialysis and immediate bedside biochemical analysis are introduced as new diagnostic tools to evaluate the effect of higher mean arterial blood pressure on global cerebral metabolism and the degree of cellular damage after OHCA., Methods/design: This is a single-center, randomized, double-blinded, superiority trial. Sixty unconscious patients with sustained return of spontaneous circulation after OHCA will be randomly assigned in a one-to-one fashion to low (63 mm Hg) or high (77 mm Hg) mean arterial blood pressure target. The primary end-point will be a difference in mean LP ratio within 48 h between blood pressure groups. Secondary end-points are (1) association between LP ratio and all-cause intensive care unit (ICU) mortality and (2) association between LP ratio and survival to hospital discharge with poor neurological function., Discussion: Markers measuring cerebral ischemia caused by cardiac arrest and consecutive resuscitation and reflecting the metabolic changes after successful resuscitation are urgently needed to enable a more personalized post-resuscitation care and prognostication. Jugular bulb microdialysis may provide a reliable global estimate of cerebral metabolic state and can be implemented as an entirely new and less invasive diagnostic tool for ICU patients after OHCA and has implications for early prognosis and treatment., Trial Registration: ClinicalTrials.gov (ClinicalTrials.gov Identifier: NCT03095742 ). Registered March 30, 2017.

Objective: After the 2012 Reassessment Campaign on Veterinary Resuscitation (RECOVER) CPR Guidelines, this is an update of evidence-based consensus guidelines for Basic Life Support (BLS), advanced life support (ALS), and periarrest monitoring., Design: These RECOVER CPR Guidelines were generated using a modified version of the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system for evidence evaluation and translation of this evidence into clear and actionable clinical instructions. Prioritized clinical questions in the Population, Intervention, Comparator, and Outcome (PICO) format were used as the basis to conduct systematic literature searches by information specialists, to extract information from relevant publications, to assess this evidence for quality, and finally to translate the findings into treatment recommendations. These recommendations were reviewed by the RECOVER writing group and opened for comment by veterinary professionals for 4 weeks., Setting: Transdisciplinary, international collaboration in university, specialty, and emergency practice., Results: A total of 40 worksheets were prepared to evaluate questions across the 3 domains of BLS, ALS and Monitoring, resulting in 90 individual treatment recommendations. High-dose epinephrine is no longer recommended, and atropine, if used, is only administered once. Bag-mask ventilation is prioritized over mouth-to-nose ventilation in nonintubated animals. In addition, an algorithm for initial assessment, an updated CPR algorithm, a rhythm diagnosis tool, and an updated drug dosing table are provided., Conclusions: While the majority of the BLS and ALS recommendations remain unchanged, some noteworthy changes were made due to new evidence that emerged over the past 10 years. Indirectness of evidence remains the largest impediment to the certainty of guidelines formulation and underscores an urgent need for more studies in the target species of dogs and cats., (© 2024 The Author(s). Journal of Veterinary Emergency and Critical Care published by Wiley Periodicals LLC on behalf of Veterinary Emergency and Critical Care Society.)

Background: Recent evidence suggests that patient outcomes are not affected by the offering of family presence during resuscitation (FPDR), and that psychological outcomes are neutral or improved in family members of adult patients. The exclusion of family members from the resuscitation area should, therefore, be reassessed., Objective: The present Canadian Critical Care Society position paper is designed to help clinicians and institutions decide whether to incorporate FPDR as part of their routine clinical practice, and to offer strategies to implement FPDR successfully., Methods: The authors conducted a literature search of the perspectives of health care providers, patients and families on the topic of FPDR, and considered the relevant ethical values of beneficence, nonmaleficence, autonomy and justice in light of the clinical evidence for FPDR. They reviewed randomized controlled trials and observational studies of FPDR to determine strategies that have been used to screen family members, select appropriate chaperones and educate staff., Results: FPDR is an ethically sound practice in Canada, and may be considered for the families of adult and pediatric patients in the hospital setting. Hospitals that choose to implement FPDR should develop transparent policies regarding which family members are to be offered the opportunity to be present during the resuscitation. Experienced chaperones should accompany and support family members in the resuscitation area. Intensive educational interventions and increasing experience with FPDR are associated with increased support for the practice from health care providers., Conclusions: FPDR should be considered to be an important component of patient and family-centred care.

Introduction: Guidelines for the treatment of patients in severe hypothermia and mainly in hypothermic cardiac arrest recommend the rewarming using the extracorporeal circulation (ECC). However,guidelines for the further in-hospital diagnostic and therapeutic approach of these patients, who often suffer from additional injuries—especially in avalanche casualties, are lacking. Lack of such algorithms may relevantly delay treatment and put patients at further risk. Together with a multidisciplinary team, the Emergency Department at the University Hospital in Bern, a level I trauma centre, created an algorithm for the in-hospital treatment of patients with hypothermic cardiac arrest. This algorithm primarily focuses on the decision-making process for the administration of ECC., The Bernese Hypothermia Algorithm: The major difference between the traditional approach, where all hypothermic patients are primarily admitted to the emergency centre, and our new algorithm is that hypothermic cardiac arrest patients without obvious signs of severe trauma are taken to the operating theatre without delay. Subsequently, the interdisciplinary team decides whether to rewarm the patient using ECC based on a standard clinical trauma assessment, serum potassium levels, core body temperature, sonographic examinations of the abdomen, pleural space, and pericardium, as well as a pelvic X-ray, if needed. During ECC, sonography is repeated and haemodynamic function as well as haemoglobin levels are regularly monitored. Standard radiological investigations according to the local multiple trauma protocol are performed only after ECC. Transfer to the intensive care unit, where mild therapeutic hypothermia is maintained for another 12 h, should not be delayed by additional X-rays for minor injuries., Discussion: The presented algorithm is intended to facilitate in-hospital decision-making and shorten the door-to-reperfusion time for patients with hypothermic cardiac arrest. It was the result of intensive collaboration between different specialties and highlights the importance of high-quality teamwork for rare cases of severe accidental hypothermia. Information derived from the new International Hypothermia Registry will help to answer open questions and further optimize the algorithm., (2010 Elsevier Ltd. All rights reserved.)

Introduction: The instructor-led CPR training method has been used for over 4 decades. However, nurses' knowledge and skills are still low. Instructor-led CPR training is an extremely capital-intensive programme that requires more time, workforce, and space, thus serving as an impediment to effective learning among the prospective nurses' trainees. Self-directed training method is suggested to improve the knowledge and skills of CPR among healthcare practitioners due to the low cost and flexibility. This study aims to evaluate the effectiveness of self-directed method in improving nurses' knowledge and skill retention from baseline to post-test, one, three-, and six months. Method: A two-arm double-blinded randomised controlled trial will be conducted in two referral hospitals. The control group training consists of a one-day session taught by AHA-certified instructors, whereas the intervention group training entails participants learning on computers in a simulation lab for seven days. A generalised estimated equation model will be used for statistical analysis. Discussion: Through the self-directed training method, participants will have significantly better knowledge and skills of CPR compared to the conversational training method across the time points. Self-directed training method is a simple, cost-effective and flexible method, which can facilitate the training of more nurses in the acquisition and retention of knowledge and skills, especially for those who prefer to learn at their own pace. [ABSTRACT FROM AUTHOR]

Organ donation following circulatory determination of death (DCDD) has contributed significantly to the donor pool in several countries, without compromising the outcomes of transplantation or the number of donations following brain death (BD). In India, majority of deceased donations happen following BD. While existing legislation allows for DCDD, there have been only a few reports of kidney transplantation following DCDD from the country. This document, prepared by a multi-disciplinary group of experts, reviews the international best practices in DCDD and outlines the path for furthering the same in India. The ethical, medical, legal, economic, procedural, and logistic challenges unique to India for all types of DCDD based on the Modified Maastricht Criteria have been addressed. India follows an opt-in system for organ donation that does not allow much scope for uncontrolled DCDD categories I and II. The practice of withdrawal of life-sustaining treatment (WLST) in India is in its infancy. The process of WLST, laid down by the Supreme Court of India, is considered time-consuming, possible only in patients in a permanent vegetative state, and considered too cumbersome for day-to-day practice. In patients where continued medical care is determined to be futile following detailed and repeated assessment, the procedure for WLST, as laid down and published by Vidhi Centre for Legal Policy in conjunction with leading medical experts is described. In controlled DCDD (category-III), the decision for WLST is independent of and delinked from the subsequent possibility of organ donation. Once families are inclined toward organ donation, they are explained the procedure including the timing and location of WLST, consent for antemortem measures, no-touch period, and the possibility of stand down and return to the intensive care unit without donation. While donation following neurologic determination of death (DNDD) is being increasingly practiced in the country, there are instances where the cardiac arrest occurs during the process of declaration of BD, before organ retrieval has been done. Protocol for DCDD category-IV deals with such situations and is described in detail. In DCDD category V, organ donation may be possible following unsuccessful cardiopulmonary resuscitation of cardiac arrest in the intensive care. An outline of organ-specific requisites for kidney, liver, heart, and lung transplantation following DCDD and the use of techniques such as normothermic regional perfusion and ex vivo machine perfusion has been provided. With increasing experience, the outcomes of transplantation following DCDD are comparable to those following DBDD or living donor transplantation. Documents and checklists necessary for the successful execution of DCDD in India are described. [ABSTRACT FROM AUTHOR]

This paper presents the results of a survey of Basic Life Support (BLS) training, based on experience gained by undergraduate medical students who had just completed their first clinical year (third year) at the University of Glasgow. Data were collected on the amount and quality of BLS training received, along with students' own perceptions of their confidence in providing BLS in a cardiac arrest resuscitation attempt. The results made interesting, but not surprising, reading with only 15% of students appearing to have been adequately taught BLS at any point during their third year. Students want more training and 98% see resuscitation as an important topic in the curriculum. Self-perceived confidence in performing BLS in an acute resuscitation situation is low. With no evidence to suggest that the situation is any different elsewhere in the UK, it is recommended that undergraduate resuscitation training is improved to reflect the importance that medical students attach to it.

This paper presents the results of a UK national survey of Basic Life Support (BLS) and Advanced Cardiac Life Support (ACLS) training for undergraduate medical students. In all responding medical schools, undergraduates are taught BLS at least once during their course but the assessment and refresher aspects of BLS training are not uniformly covered. There are inconsistencies in ACLS teaching, with some schools providing formal courses, some teaching specific techniques and others providing no ACLS teaching. Most interestingly, of those completing the questionnaire, only 52% considered present undergraduate training adequate to enable junior house officers to provide an effective resuscitation service. We recommend that all aspects of BLS and ACLS training for medical undergraduates be improved and standardized throughout the UK.

Objective: The objective was to investigate whether early advanced airway management during the entire resuscitation period is associated with favorable neurological outcomes and survival in patients with out-of-hospital cardiac arrest (OHCA)., Methods: We performed a retrospective cohort study of patients with OHCA aged ≥18 years enrolled in OHCA registry in Japan who received advanced airway management during cardiac arrest between June 2014 and December 2020. To address resuscitation time bias, we performed risk set matching analyses in which patients who did and did not receive advanced airway management were matched at the same time point (min) using the time-dependent propensity score; further, we compared early (≤10 min) and late (>10 min) advanced airway management. The primary and secondary outcome measures were favorable neurological outcomes using Cerebral Performance Category scores and survival at 1 month after cardiac arrest., Results: Of the 41,101 eligible patients, 21,446 patients received early advanced airway management. Thus, risk set matching was performed with a total of 42,866 patients. In the main analysis, early advanced airway management was significantly associated with favorable neurological outcomes (risk ratio [RR] 0.997, 95% confidence interval [CI] 0.995-0.999) and survival (RR 0.990, 95% CI 0.986-0.994) at 1 month after cardiac arrest. In the sensitivity analysis with early advanced airway management defined as ≤5 min and ≤20 min, the results were comparable., Conclusions: Although early advanced airway management was statistically significant for improved neurological outcomes and survival at 1 month after cardiac arrest, the RR was very close to 1, indicating that the timing of advanced airway management has minimal impact on clinical outcomes, and decisions should be made based on the individual needs of the patient., (© 2024 Society for Academic Emergency Medicine.)

Objective: To determine the accuracy of paper cardiopulmonary resuscitation records., Design: Case series., Setting: Twenty-six-bed video-monitored pediatric cardiac ICU., Patients: All patients who had a resuscitation event with available video and electronically stored vital sign and waveform data from May 2012 to February 2013., Interventions: None., Measurements and Main Results: There were 41 cardiopulmonary resuscitation events during the study period. Fifteen had complete and valid data from the paper cardiopulmonary resuscitation forms, the retrieved monitor data, and the continuous bedside video monitoring. These 15 events occurred in 12 individual patients, and there was 100% agreement of data in the documentation of interventions in place (ventilation, arterial catheter, pulse oximetry, and vascular access) and in the presence of a witness at the onset of the arrest. All events were witnessed. Of the 15 events, video and monitor review revealed that 14 used waveform and numeric capnometry to confirm endotracheal tube/tracheostomy placement, but this section was only completed on the paper cardiopulmonary resuscitation record in three of the 14 cases. All records showed no discrepancies in the time of return of spontaneous circulation. The video and monitor review revealed delay in initiating cardiopulmonary resuscitation (mode, 2 min; two cases ≥ 7 min) and shockable rhythms (ventricular arrhythmia) in two cases. A sign of pulseless state was discovered in seven cases classified on the paper record as "always with a pulse." Those include sudden loss of consciousness, flat arterial line tracing, and abrupt drop in the partial pressure of exhaled carbon dioxide tracing (< 10 mm Hg)., Conclusions: Eyewitness accounts of cardiopulmonary resuscitation are often inaccurate and incomplete. Review of information from video and electronically stored vital sign and waveform data provides more accurate information than review of paper-based cardiopulmonary resuscitation records and may provide the insight necessary to improving cardiopulmonary resuscitation.

Objectives: Cannulation for extracorporeal membrane oxygenation during active extracorporeal cardiopulmonary resuscitation (ECPR) is a method to rescue patients refractory to standard resuscitation. We hypothesized that early arrest hemodynamics and end-tidal C o2 (ET co2 ) are associated with survival to hospital discharge with favorable neurologic outcome in pediatric ECPR patients., Design: Preplanned, secondary analysis of pediatric Utstein, hemodynamic, and ventilatory data in ECPR patients collected during the 2016-2021 Improving Outcomes from Pediatric Cardiac Arrest study; the ICU-RESUScitation Project (ICU-RESUS; NCT02837497)., Setting: Eighteen ICUs participated in ICU-RESUS., Patients: There were 97 ECPR patients with hemodynamic waveforms during cardiopulmonary resuscitation., Interventions: None., Measurements and Main Results: Overall, 71 of 97 patients (73%) were younger than 1 year old, 82 of 97 (85%) had congenital heart disease, and 62 of 97 (64%) were postoperative cardiac surgical patients. Forty of 97 patients (41%) survived with favorable neurologic outcome. We failed to find differences in diastolic or systolic blood pressure, proportion achieving age-based target diastolic or systolic blood pressure, or chest compression rate during the initial 10 minutes of CPR between patients who survived with favorable neurologic outcome and those who did not. Thirty-five patients had ET co2 data; of 17 survivors with favorable neurologic outcome, four of 17 (24%) had an average ET co2 less than 10 mm Hg and two (12%) had a maximum ET co2 less than 10 mm Hg during the initial 10 minutes of resuscitation., Conclusions: We did not identify an association between early hemodynamics achieved by high-quality CPR and survival to hospital discharge with favorable neurologic outcome after pediatric ECPR. Candidates for ECPR with ET co2 less than 10 mm Hg may survive with favorable neurologic outcome., Competing Interests: Drs. Yates’s, Naim’s, Reeder’s, Berg’s, Carpenter’s, Dean’s, Fink’s, Frazier’s, Hall’s, Manga’s, Mourani’s, Sapru’s, Wessel’s, Wolfe’s, Zuppa’s, and Meert’s institution received funding from the National Institutes of Health (NIH). Drs. Yates, Naim, Reeder, Banks, Berg, Carcillo, Carpenter, Dean, Fink, Franzon, Frazier, Freiss, Hall, Horvat, McQuillen, Mourani, Pollack, Sapru, Schneiter, Wessel, Zuppa, Sutton, and Meert received support for article research from the NIH. Drs. Banks’s, Carcillo’s, Horvat’s, Maa’s, McQuillen’s, Pollack’s, and Schneiter’s institutions received funding from the National Institute for Child Health and Human Development. Dr. Banks disclosed government work. Drs. Carcillo’s, Maa’s, and Sutton’s institutions received funding from the National Heart, Lung, and Blood Institute (NHLBI). Dr. Carcillo’s institution received funding from the National Institute for General Medical Sciences. Dr. Diddle disclosed that he is a consultant with Mallinckrodt Pharmaceuticals. Dr. Franzon received funding from Health Navigator Foundation; she disclosed that she is a site investigator for a multisite NIH funded project. Dr. Frazier’s institution received funding from the Neurocritical Care Society and the American Board of Pediatrics. Dr. Hall received funding from AbbVie, Kiadis, and the American Board of Pediatrics. Dr. Morgan’s institution received funding from the NHLBI (K23HL148541). Dr. Wolfe received funding from The Debriefing Academy. The remaining authors have disclosed that they do not have any potential conflicts of interest., (Copyright © 2024 by the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies.)

We describe the development, implementation, and outcomes of an intensivist-led adult extracorporeal life support (ECLS) program using intensivists both to perform venovenous (V-V), venoarterial (V-A), and extracorporeal cardiopulmonary resuscitation (ECPR) cannulations, and to manage patients on ECLS throughout their ICU course. All adults supported with ECLS at the University of New Mexico Hospital (UNMH) from February 1, 2017 to December 31, 2021 were retrospectively analyzed. A total of 203 ECLS cannulations were performed in 198 patients, including 116 V-A cannulations (including 65 during ECPR) and 87 V-V cannulations (including 38 in patients with COVID-19). UNMH intensivists performed 195 cannulations, with 9 cannulation complications. Cardiothoracic surgeons performed 8 cannulations. Overall survival to hospital discharge or transfer was 46.5%. Survival was 32.3% in the ECPR group and 56% in the non-ECPR V-A group. In the V-V cohort, survival was 66.7% in the COVID-19-negative patients and 34.2% in the COVID-19-positive patients. This large series of intensivist-performed ECLS cannulations-including V-A, V-V, and ECPR modalities-demonstrates the successful implementation of a comprehensive intensivist-led ECLS program. With outcomes comparable to those in the literature, our program serves as a model for the initiation and development of ECLS programs in settings with limited access to local subspecialty cardiothoracic surgical services., Competing Interests: The authors have no funding and conflicts of interest to disclose., (Copyright © ASAIO 2022.)

This paper deals with estimating the probability of a binary counterfactual outcome as a function of a continuous covariate under monotonicity constraints. We are motivated by the study of out-of-hospital cardiac arrest patients which aims to estimate the counterfactual 30-day survival probability if either all patients had received, or if none of the patients had received bystander cardiopulmonary resuscitation (CPR), as a function of the ambulance response time. It is natural to assume that the counterfactual 30-day survival probability cannot increase with increasing ambulance response time. We model the monotone relationship with a marginal structural model and B-splines. We then derive an estimating equation for the parameters of interest which however further relies on an auxiliary regression model for the observed 30-day survival probabilities. The predictions of the observed 30-day survival probabilities are used as pseudo-values for the unobserved counterfactual 30-day survival status. The methods are illustrated and contrasted with an unconstrained modeling approach in large-scale Danish registry data., (© 2023 The Authors. Statistics in Medicine published by John Wiley & Sons Ltd.)

Objectives: To determine factors associated with brain death in children treated with extracorporeal cardiopulmonary resuscitation (E-cardiopulmonary resuscitation)., Design: Retrospective database study., Settings: Data reported to the Extracorporeal Life Support Organization (ELSO), 2017-2021., Patients: Children supported with venoarterial extracorporeal membrane oxygenation (ECMO) for E-cardiopulmonary resuscitation., Intervention: None., Measurements and Main Results: Data from the ELSO Registry included patient characteristics, blood gas values, support therapies, and complications. The primary outcome was brain death (i.e., death by neurologic criteria [DNC]). There were 2,209 children (≥ 29 d to < 18 yr of age) included. The reason for ECMO discontinuation was DNC in 138 patients (6%), and other criteria for death occurred in 886 patients (40%). Recovery occurred in 1,109 patients (50%), and the remaining 76 patients (4%) underwent transplantation. Fine and Gray proportional subdistribution hazards' regression analyses were used to examine the association between variables of interest and DNC. Age greater than 1 year ( p < 0.001), arterial blood carbon dioxide tension (Pa co2 ) greater than 82 mm Hg ( p = 0.022), baseline lactate greater than 15 mmol/L ( p = 0.034), and lactate 24 hours after cannulation greater than 3.8 mmol/L ( p < 0.001) were independently associated with greater hazard of subsequent DNC. In contrast, the presence of cardiac disease was associated with a lower hazard of subsequent DNC (subdistribution hazard ratio 0.57 [95% CI, 0.39-0.83] p = 0.004)., Conclusions: In children undergoing E-cardiopulmonary resuscitation, older age, pre-event hypercarbia, higher before and during ECMO lactate levels are associated with DNC. Given the association of DNC with hypercarbia following cardiac arrest, the role of Pa co2 management in E-cardiopulmonary resuscitation warrants further studies., Competing Interests: Dr. Thiagarajan reports a relationship with the United States Department of Defense Clinical Trial Award (award number W81XWH2210301) for clinical trial, with the Society of Critical Care Medicine speaking and lecture fees, and with Extracorporeal Life Support Organization (ELSO) that speaking and lecture fees. Dr. Tonna reports a relationship with LivaNova USA, Inc. that includes speaking and lecture fees and travel reimbursement, he is the Chair of the ELSO Registry, and received support for article research from the National Institutes of Health. Dr. Rycus is the Executive Director of ELSO. The remaining authors have disclosed that they do not have any potential conflicts of interest., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies.)

The critical care management of patients after cardiac arrest is burdened by a lack of high-quality clinical studies and the resultant lack of high-certainty evidence. This results in limited practice guideline recommendations, which may lead to uncertainty and variability in management. Critical care management is crucial in patients after cardiac arrest and affects outcome. Although guidelines address some relevant topics (including temperature control and neurological prognostication of comatose survivors, 2 topics for which there are more robust clinical studies), many important subject areas have limited or nonexistent clinical studies, leading to the absence of guidelines or low-certainty evidence. The American Heart Association Emergency Cardiovascular Care Committee and the Neurocritical Care Society collaborated to address this gap by organizing an expert consensus panel and conference. Twenty-four experienced practitioners (including physicians, nurses, pharmacists, and a respiratory therapist) from multiple medical specialties, levels, institutions, and countries made up the panel. Topics were identified and prioritized by the panel and arranged by organ system to facilitate discussion, debate, and consensus building. Statements related to postarrest management were generated, and 80% agreement was required to approve a statement. Voting was anonymous and web based. Topics addressed include neurological, cardiac, pulmonary, hematological, infectious, gastrointestinal, endocrine, and general critical care management. Areas of uncertainty, areas for which no consensus was reached, and future research directions are also included. Until high-quality studies that inform practice guidelines in these areas are available, the expert panel consensus statements that are provided can advise clinicians on the critical care management of patients after cardiac arrest., (© 2023. The Author(s).)

Background: Information on extracerebral system dysfunction is important for assessing the needs of critically ill patients after cardiac arrest., Aims: To describe the prevalence of organ dysfunction and patient severity after out of hospital cardiac arrest (OHCA) using scores commonly used in intensive care and the association between these and mortality., Methods: Retrospective analysis of observational data collected in real time in a tertiary medical center where care withdrawal is mostly illegal. Adult patients after nontraumatic OHCA with ROSC who survived for more than two hours were included. Primary outcome-prevalence of organ failure, based on common definitions for organ dysfunction, in the 1 days of hospitalization. Secondary outcomes-rates of survival to hospital discharge and survival with a good neurological outcome (CPC 1 or 2), and associations between organ dysfunction SOFA and APACHE-II scores and outcomes. Associations were assessed using fisher's exact test for categorical variables and Mann-Whitney and T test for continuous variables. Multivariable models were also constructed for all measurements showing associations in previous tests. For severity scores compatibility, we used receiver-operating curve (ROC)., Results: Overall 369 patients (median age 75 years, 65% male) were included. Most arrests (64%) were witnessed, bystander CPR was provided in 15%. Median call to arrival time was 4 min. The presenting rhythm was asystole in 48% and VT/VF in 22%. Cardiovascular causes of arrest predominated (48%, n = 178). The median length of hospitalization was 5 days. Overall 28% of the patients (n = 98) survived to hospital discharge, mostly with a good neurological status (18.7%, n = 57). The rates of organ dysfunction were: hemodynamic instability 65% (n = 247), respiratory dysfunction 94% (n = 296), kidney dysfunction 70% (n = 259), hepatic dysfunction 14% (n = 50). The median SOFA score on day 1 was 9 and the median APACHE II score was 34. Modeling was limited by missing data. Neurological dysfunction (i.e. GCS and seizures) and kidney injury were consistently correlated with the outcomes in the multivariable models. Severity of critical illness assessed by above scoring systems correlated with mortality (all ROC curves had an AUC ranging between 0.728 and 0.849)., Conclusions: Multiorgan failure is common after ROSC (1-4). Therefore, the management of patients after ROSC may require advanced multidisciplinary care. Scores describing the severity of critical illness should be routinely reported in resuscitation research. Our unique setting where withdrawal of care is illegal, allows assessment of extremely ill patients and may assist in defining margins for futility., (© 2023. The Author(s), under exclusive licence to Società Italiana di Medicina Interna (SIMI).)

Purpose of Review: The latest resuscitation guidelines contain a new chapter, which focuses on systems improving care for patients with out-of-hospital cardiac arrest (OHCA). In this article, we describe recent developments regarding telephone cardiopulmonary resuscitation (CPR), first responder systems, cardiac arrest centers, and global campaigns., Recent Findings: Telephone CPR has been implemented in many countries, and recent developments include artificial intelligence and video calls to improve dispatch assisted CPR. However, the degree of implementation is not yet satisfying. Smartphone alerting systems are effective in reducing the resuscitation-free interval, but many regions do not yet use this technology. Further improvements are needed to reduce response times. Cardiac arrest centers increase the survival chance after OHCA. Specific criteria need to be defined and professional societies should establish a certification process. Global campaigns are effective in reaching people around the world. However, we need to evaluate the effects of the campaigns., Summary: Telephone CPR, first responder systems, cardiac arrest centers, and global campaigns are highlighted in the recent resuscitation guidelines. However, the degree of implementation is not yet sufficient. We do not only need to implement these measures, but we should also aim to monitor the systems regarding their performance and further improve them., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Refining out-of-hospital cardiopulmonary arrest (OHCA) resuscitation protocols for local emergency practices is vital. The lack of comprehensive evaluation methods for individualized protocols impedes targeted improvements. Thus, we employed machine learning to assess emergency medical service (EMS) records for examining regional disparities in time reduction strategies. In this retrospective study, we examined Japanese EMS records and neurological outcomes from 2015 to 2020 using nationwide data. We included patients aged ≥ 18 years with cardiogenic OHCA and visualized EMS activity time variations across prefectures. A five-layer neural network generated a neurological outcome predictive model that was trained on 80% of the data and tested on the remaining 20%. We evaluated interventions associated with changes in prognosis by simulating these changes after adjusting for time factors, including EMS contact to hospital arrival and initial defibrillation or drug administration. The study encompassed 460,540 patients, with the model's area under the curve and accuracy being 0.96 and 0.95, respectively. Reducing transport time and defibrillation improved outcomes universally, while combining transport time and drug administration showed varied efficacy. In conclusion, the association of emergency activity time with neurological outcomes varied across Japanese prefectures, suggesting the need to set targets for reducing activity time in localized emergency protocols., (© 2023. Springer Nature Limited.)

Introduction: Supporting parents is a crucial part of family-centered care in pediatric and neonate resuscitation., Objectives: The aim of this systematic review was to appraise and synthesize studies conducted to determine resuscitation team members' perspectives of support for parents during pediatric and neonate resuscitation., Methods: The PRISMA model guided the systematic literature search of Google Scholar, PubMed, MEDLINE, CINAHL, Cochrane, and Scopus for studies published until May 2022. The authors independently screened all titles, abstracts, and full-text articles for eligibility. There was agreement about screened articles for inclusion. Full texts of all potentially relevant studies were evaluated for the rigor of the study design, sample, and analysis. This review included quantitative, qualitative, and mixed-methods studies. The quality of evidence across the included studies was assessed using the risk of bias in non-randomized studies of interventions (ROBINS-I) tool as part of GRADE's (Recommendations Assessment, Development, and Evaluations) certainty rating process., Results: There were 978 articles located. After reviewing for relevancy, 141 full-text articles were assessed, and 13 articles met criteria and were included in this review (4 quantitative, 7 qualitative, and 2 mixed-methods design). Five themes were revealed to summarize resuscitation team members' perspectives of parental support in pediatric resuscitation: providing information to parents, family facilitator, emotional support, presence of parents during resuscitation, and spiritual and religious support., Conclusions: The results of this systematic review can be used to improve support for parents by informing the education of resuscitation team members and clarifying policies and guidelines of resuscitation team roles to include support for parents., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

The effect of the dimensions of the thoracic cage on the resuscitation outcome of cardiopulmonary resuscitation (CPR) maneuvers has long been debated. In this study, the effect of changes in the rib cage dimensions on the achieved compression depth was investigated using finite element simulations. A total of 216 different rib cage geometry models were considered and, in each case, the result of applying different levels of compression force up to 600 N were simulated. The Haller Index of the rib cage is defined as the ratio of the transverse diameter and the antero-posterior diameter. Our results suggest that, with a fixed level of compression force, performing CPR on rib cages having a low Haller Index and/or a larger height leads to compression depths below the average. Alternatively, if a target compression depth is set for CPR, in general a lower compression force would be required for individuals with higher Haller Index and/or lower chest height. In addition, present results indicate that wider chested individuals will experience lower stress levels on their ribs to achieve the required CPR target depth. Moreover, in the present study we propose predictive models, based on anthropometric parameters, for compression depth and rib stress during chest compressions. In particular, the model suggests that in future correlations of empirical CPR data the patients' Haller index and vertical (sagittal) cross-area are the best parameters to be used as independent variables in a fit., (© 2023 The Authors. International Journal for Numerical Methods in Biomedical Engineering published by John Wiley & Sons Ltd.)

Mechanical circulatory support using extracorporeal life support systems (ECLS) has significantly increased in recent years. These critically ill patients pose special challenges to the multiprofessional treatment team and require comprehensive, interdisciplinary and interprofessional concepts. For this reason, to ensure the best possible patient care a standardized ECLS training module has been created at national specialist society level, taking emergency and intensive care management into account.

Background: Extracorporeal cardiopulmonary resuscitation has become a recommended treatment option for patients with severe hypothermia with cardiac arrest. Minimal invasive extracorporeal circulation (MiECC) may offer advantages over the current standard extracorporeal membrane oxygenation (ECMO)., Methods: Retrospective cohort analysis of hospital database for patients with accidental hypothermia and extracorporeal rewarming with MiECC admitted between 2010 and 2019., Results: Overall, six of 17 patients survived to hospital discharge. Eleven patients suffered accidental hypothermia in an alpine and six in an urban setting. Sixteen patients arrived at the hospital under ongoing cardiopulmonary resuscitation (CPR). CPR time was 90 minutes (0-150). Four patients survived from an alpine setting and two from an urban setting with CPR duration of 90 minutes (0-150) and 85 minutes (25-100), respectively. Asphyctic patients tended to have lower survival (one of seven patients). Two patients of six with major trauma survived., Conclusion: MiECC for extracorporeal rewarming from severe accidental hypothermia is a feasible alternative to ECMO, with comparable survival rates., (© 2021 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.)

Background: In adults with refractory out-of-hospital cardiac arrest, when conventional cardiopulmonary resuscitation (CPR) alone does not achieve return of spontaneous circulation, extracorporeal CPR is attempted to restore perfusion and improve outcomes. Considering the contrasting findings of recent studies, we conducted a meta-analysis of randomized controlled trials to ascertain the effect of extracorporeal CPR on survival and neurological outcome., Methods: Pubmed via MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials were searched up to February 3, 2023, for randomized controlled trials comparing extracorporeal CPR versus conventional CPR in adults with refractory out-of-hospital cardiac arrest. Survival with a favorable neurological outcome at the longest follow-up available was the primary outcome., Results: Among four randomized controlled trials included, extracorporeal CPR compared with conventional CPR increased survival with favorable neurological outcome at the longest follow-up available for all rhythms (59/220 [27%] vs. 39/213 [18%]; OR = 1.72; 95% CI, 1.09-2.70; p = 0.02; I 2  = 26%; number needed to treat of 9), for initial shockable rhythms only (55/164 [34%] vs. 38/165 [23%]; OR = 1.90; 95% CI, 1.16-3.13; p = 0.01; I 2  = 23%; number needed to treat of 7), and at hospital discharge or 30 days (55/220 [25%] vs. 34/212 [16%]; OR = 1.82; 95% CI, 1.13-2.92; p = 0.01; I 2  = 0.0%). Overall survival at the longest follow-up available was similar (61/220 [25%] vs. 34/212 [16%]; OR = 1.82; 95% CI, 1.13-2.92; p = 0.59; I 2  = 58%)., Conclusions: Extracorporeal CPR compared with conventional CPR increased survival with favorable neurological outcome in adults with refractory out-of-hospital cardiac arrest, especially when the initial rhythm was shockable., Review Registration: PROSPERO CRD42023396482., (© 2023 The Authors. Artificial Organs published by International Center for Artificial Organ and Transplantation (ICAOT) and Wiley Periodicals LLC.)

Abstract: Introduction: The present study aimed to explore the clinical features and long-term outcomes associated with neurologic impairment in patients with cardiac arrest (CA) who received extracorporeal cardiopulmonary resuscitation (ECPR). Methods: A total of 37 adult CA patients who underwent venoarterial extracorporeal membrane oxygenation and were admitted to our department between January 2015 and February 2022 were divided according to neurologic impairment. Baseline and CPR- and ECMO-related characteristics were compared between the two groups. Long-term neurologic outcomes were collected via telephone follow-ups. Results: Twenty-four (64.9%) ECPR-supported patients developed neurologic impairments. The two groups differed significantly in median age (P = 0.026), proportion of intra-aortic balloon pump (IABP) support (P = 0.011), proportion of continuous renal replacement therapy (P = 0.025), and median serum creatinine (Cr) level (P = 0.012) pre-ECMO. The 28-day mortality (P = 0.001), hospital mortality (P = 0.003), median duration from CA to restoration of spontaneous circulation (P = 0.029), proportion of patients with nonpulsatile perfusion (NP) >12 hours (P = 0.040), and median ECMO duration (P = 0.047) were higher in the neurologic impairment group. In contrast, the group without neurologic impairment exhibited a longer median intensive care unit length of stay (P = 0.047), longer median hospital LOS (P = 0.031), and more successful ECMO weaning (P = 0.049). Moreover, NP >12 hours combined with IABP support (odds ratio [OR], 14.769; 95% confidence interval [CI], 1.417~153.889; P = 0.024) and serum Cr level (OR, 1.028; 95% CI, 1.001~1.056; P = 0.043) were independent risk factors for neurologic impairment. Furthermore, neurologic impairment was associated with significantly worse 90-day survival (hazards ratio, 4.218; 95% CI, 1.745~10.2; P = 0.0014). Conclusions: The incidence of neurologic impairment was higher in patients who received ECPR and was closely related to 28-day mortality and discharge survival. NP >12 hours combined with IABP support and serum Cr levels were independent risk factors for neurologic impairments in ECPR-supported patients. Neurologic impairment significantly adversely affected the long-term outcomes of ECPR-supported patients after discharge., Competing Interests: The authors report no conflicts of interest., (Copyright © 2022 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Shock Society.)

Background: There is an increasing use of extracorporeal life support in refractory cardiac arrest. Recent studies highlighted the importance of an early and accurate patient selection for this invasive procedure., Objectives: The aim of this study was to retrospectively validate a six-criteria-screening-checklist (witnessed collapse, bystander-cardiopulmonary resuscitation/first medical contact <5 min, shockable, age <70 years, end tidal carbon dioxide >14 mmHg and pupils not anisocoric/distorted/mydriatic) as an early screening tool in patients treated with extracorporeal cardiopulmonary resuscitation (eCPR) at the emergency department., Design: Retrospective observational study., Setting/patients: All patients at least 18 years of age with nontraumatic cardiac arrest and without return of spontaneous circulation before eCPR treatment at our department between January 2013 and December 2018 were included in this retrospective observational study., Intervention: No specific intervention was set in this observational study., Main Outcome Measures: Primary outcome was the rate of patients who fulfilled all criteria, secondary outcome was 30-day and 6-month survival in accordance with the criteria., Results: Overall, data from a total of 92 patients were eligible for analyses. Out of these, 27 patients (29%) met all criteria. Patients, who fulfilled all criteria, showed significantly higher odds for 30-day survival [OR 6.0 (95% CI 1.78 to 20.19)] P = 0.004. Patients, who did not fulfil all criteria, showed significantly higher rates of early mortality after eCPR initiation [OR 4.57 (95% CI 1.69 to 12.37)] P = 0.003., Conclusion: Patients fulfilling all inclusion criteria showed higher rates of survival after eCPR. Our results affirm that there is a possibility and even an obvious necessity for early patient selection based on standardised criteria before eCPR treatment. Large randomised trials are urgently needed to answer this question accurately.

Introduction: Bystander cardiopulmonary resuscitation in out-of-hospital cardiac arrest is associated with higher survival rates. Even trained health care staff cannot assess breathing well enough to detect cardiac arrest. Recognition of cardiac arrest by lay rescuers might be overlooked in adult basic life support resuscitation guidelines, which explain what to do, but not how to do it. The 2015 Adult Advanced Life Support Resuscitation Guidelines recommend to "look for chest movement." We hypothesize (1) that instructing lay rescuers to look for chest movement allows detecting breathing (or lack thereof); (2) that showing a person their own recorded gaze overlay during a video debriefing intervention enhances breathing detection at postallocation; and (3) that the more time spent looking at a cardiac arrest victim's chest, the greater the probability of detecting breathing (or lack thereof)., Methods: Monocentric, blinded, prospective, 2-arm parallel randomized controlled trial with balanced randomization (1:1). The design entailed a preallocation simulation, an intervention (video debriefing with or without gaze overlay), and a postallocation simulation. A follow-up simulation took place after 6 months. The main outcome measured was success in detecting breathing. Participants were all prospective students of a bachelor's degree program in nursing., Results: All participants performed better at postallocation (success rate at preallocation = 59%, postallocation = 79%, χ 2 = 7.22, P < 0.01) regardless of viewing their own gaze overlay during video debriefing. We failed to obtain a sufficient number of participants for the follow-up simulation. Instructing lay rescuers to look for chest movement allows them to detect breathing (or lack thereof). Each second spent looking at the thorax increased the odds of successfully detecting breathing by 38%. Mean thorax gaze duration significantly increased by 5.95 seconds (95% confidence interval = 4.71-7.31) from preallocation (3.46 seconds, SD = 4.16) to postallocation (9.41 seconds, SD = 5.98). Laypersons' median diagnosis time was 15.5 seconds (range = 2-63 seconds), similar to another study (13 seconds, range = 5-40 seconds)., Conclusions: This is the second study in which the median time to decision exceeded the maximum 10 seconds recommended. International guidelines should consider increasing the time allowed for the "check breathing" step of bystander cardiopulmonary resuscitation procedures., Competing Interests: The authors declare no conflict of interest., (Copyright © 2022 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Society for Simulation in Healthcare.)

Extracorporeal cardiopulmonary resuscitation (eCPR) is the implementation of extracorporeal membrane oxygenation (ECMO) in selected patients with cardiac arrest and may be considered when conventional CPR efforts fail, as written in the latest international guidelines. eCPR is a complex intervention that requires a highly trained team, specialized equipment, and multidisciplinary support within a healthcare system and it has the risk of several life-threatening complications. However, there are no randomized, controlled studies on eCPR, and valid predictors of benefit and outcome are lacking. Therefore, optimal timing, patient selection, location and method of implementation vary across centers. As utilization of eCPR has increased in recent years and more centers begin to perform eCPR, considerable uncertainties exist in the prehospital setting as well as in the emergency room. However, structured communication and clearly defined processes are essential especially at the interface between prehospital rescue teams and the eCPR team to achieve the highest possible benefit for cardiac arrest patients using eCPR. This article presents an algorithm for structured, evidence-based logistic considerations, patient selection, and implementation of eCPR as well as early care after establishment of extracorporeal life support (ECLS) which are mainly based on the German national recommendations for eCPR of DGIIN, DGK, DGTHG, DGfK, DGNI, DGAI, DIVI and GRC published in 2019 as well as the S3 guideline "Use of extracorporeal circulation (ECLS/ECMO) for cardiac and circulatory failure" and local standard operating procedures of the authors., (© 2021. Springer Medizin Verlag GmbH, ein Teil von Springer Nature.)

Background: Because of the complexity, stressfulness, and the threatening nature of the working environment of prehospital Emergency Medical Technicians (EMTs), they encounter many ethical challenges during making decisions and providing quick and accurate care to patients. The present study aimed to investigate the ethical challenges among prehospital EMTs. Materials and Methods: To review all published studies, we searched SID, Medlib, Iran Medex, Magiran, Web of Science, Medline, Google Scholar, CINAHL, PubMed, Ovid, and Scopus databases from 2000-18. The keywords were "ethical challenges", "emergency medical technicians", and "prehospital emergency". Results: According to the evaluation of the studies, the ethical challenge regarding prehospital emergencies included decision over dispatching an ambulance to the scene, cardiopulmonary resuscitation, triage in crisis and disaster, irrational interventions of the patient or patient's family, intervention in accordance with patient's informed consent, and safe driving. Conclusion: Considering the unique conditions of prehospital caring, identifying, and discovering the ethical conflicts in this field of the health care system and providing the appropriate solution are very important. [ABSTRACT FROM AUTHOR]

Background: Although the prognosis of patients treated at specialized facilities has improved, the relationship between the number of patients treated at hospitals and prognosis is controversial and lacks constancy in those with out-of-hospital cardiac arrest (OHCA). This study aimed to clarify the effect of annual hospital admissions on the prognosis of adult patients with OHCA by analyzing a large cohort., Methods: The effect of annual hospital admissions on patient prognosis was analyzed retrospectively using data from the Japanese Association for Acute Medicine OHCA registry, a nationwide multihospital prospective database. This study analyzed 3632 of 35,754 patients hospitalized for OHCA of cardiac origin at 86 hospitals. The hospitals were divided into tertiles based on the volume of annual admissions. The effect of hospital volume on prognosis was analyzed using logistic regression analysis with multiple imputation. Furthermore, three subgroup analyses were performed for patients with return of spontaneous circulation (ROSC) before arrival at the emergency department, patients admitted to critical care medical centers, and patients admitted to extracorporeal membrane oxygenation-capable hospitals., Results: Favorable neurological outcomes 30 days after OHCA for patients overall showed no advantage for medium- and high-volume centers over low-volume centers; Odds ratio (OR) 0.989, (95% Confidence interval [CI] 0.562-1.741), OR 1.504 (95% CI 0.919-2.463), respectively. However, the frequency of favorable neurological outcomes in OHCA patients with ROSC before arrival at the emergency department at high-volume centers was higher than those at low-volume centers (OR 1.955, 95% CI 1.033-3.851)., Conclusion: Hospital volume did not significantly affect the prognosis of adult patients with OHCA. However, transport to a high-volume hospital may improve the neurological prognosis in OHCA patients with ROSC before arrival at the emergency department., (© 2022. The Author(s).)

Purpose of Review: Cardiac arrest centres (CACs) may play a key role in providing postresuscitation care, thereby improving outcomes in out-of-hospital cardiac arrest (OHCA). There is no consensus on CAC definitions or the optimal CAC transport strategy despite advances in research. This review provides an updated overview of CACs, highlighting evidence gaps and future research directions., Recent Findings: CAC definitions vary worldwide but often feature 24/7 percutaneous coronary intervention capability, targeted temperature management, neuroprognostication, intensive care, education, and research within a centralized, high-volume hospital. Significant evidence exists for benefits of CACs related to regionalization. A recent meta-analysis demonstrated clearly improved survival with favourable neurological outcome and survival among patients transported to CACs with conclusions robust to sensitivity analyses. However, scarce data exists regarding 'who', 'when', and 'where' for CAC transport strategies. Evidence for OHCA patients without ST elevation postresuscitation to be transported to CACs remains unclear. Preliminary evidence demonstrated greater benefit from CACs among patients with shockable rhythms. Randomized controlled trials should evaluate specific strategies, such as bypassing nearest hospitals and interhospital transfer., Summary: Real-world study designs evaluating CAC transport strategies are needed. OHCA patients with underlying culprit lesions, such as those with ST-elevation myocardial infarction (STEMI) or initial shockable rhythms, will likely benefit the most from CACs., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)