• Jan-Thorsten Grasner, Janet E Bray, Jerry P Nolan, Taku Iwami, OngMarcus E HMEH, Judith Finn, Bryan McNally, Ziad Nehme, Comilla Sasson, Janice Tijssen, Shir Lynn Lim, Ingvild Tjelmeland, Jan Wnent, Bridget Dicker, Chika Nishiyama, Zakary Doherty, Michelle Welsford, Gavin D Perkins, and International Liaison Committee on Resuscitation.
• Resuscitation. 2024 Aug 1; 201: 110288110288.

AbstractThe Utstein Out-of-Hospital Cardiac Arrest Resuscitation Registry Template, introduced in 1991 and updated in 2004 and 2015, standardizes data collection to enable research, evaluation, and comparisons of systems of care. The impetus for the current update stemmed from significant advances in the field and insights from registry development and regional comparisons. This 2024 update involved representatives of the International Liaison Committee on Resuscitation and used a modified Delphi process. Every 2015 Utstein data element was reviewed for relevance, priority (core or supplemental), and improvement. New variables were proposed and refined. All changes were voted on for inclusion. The 2015 domains-system, dispatch, patient, process, and outcomes-were retained. Further clarity is provided for the definitions of out-of-hospital cardiac arrest attended resuscitation and attempted resuscitation. Changes reflect advancements in dispatch, early response systems, and resuscitation care, as well as the importance of prehospital outcomes. Time intervals such as emergency medical service response time now emphasize precise reporting of the times used. New flowcharts aid the reporting of system effectiveness for patients with an attempted resuscitation and system efficacy for the Utstein comparator group. Recognizing the varying capacities of emergency systems globally, the writing group provided a minimal dataset for settings with developing emergency medical systems. Supplementary variables are considered useful for research purposes. These revisions aim to elevate data collection and reporting transparency by registries and researchers and to advance international comparisons and collaborations. The overarching objective remains the improvement of outcomes for patients with out-of-hospital cardiac arrest.Copyright © 2024 European Resuscitation Council, American Heart Association Inc., International Liaison Committee on Resuscitation. Published by Elsevier B.V. All rights reserved.

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