Expert opinion on evidence after 2020 Korean cardiopulmonary resuscitation guidelines.

Considerable evidence has been published since the 2020 Korean cardiopulmonary resuscitation (CPR) guidelines. The International Liaison Committee on Resuscitation (ILCOR) publishes the Consensus on CPR and Emergency Cardiovascular Care Science with Treatment Recommendations (CoSTR) summary annually. This review provides expert opinions by reviewing the recent evidence on CPR and ILCOR treatment recommendations. The authors reviewed the CoSTR summary published by ILCOR in 2021 and 2022. PICO (population, intervention, comparator, outcome) questions for each topic were reviewed using a systemic or scoping review methodology. Two experts were appointed for each question and reviewed the topic independently. Topics suggested by the reviewers for revision or additional description of the guidelines were discussed at a consensus conference. Forty-three questions were reviewed, including 15 on basic life support, seven on advanced life support, two on pediatric life support, 11 on neonatal life support, six on education, and teams, one on first aid, and one related to coronavirus disease 2019. Finally, the Guidelines Committee decided to maintain the current guidelines for 28 topics without change and suggested expert opinions on 15 topics.