• Am J Emerg Med · Nov 2024

    Signs of life as a favorable predictor for non-shockable cardiac arrest undergoing extracorporeal cardiopulmonary resuscitation post non-shockable cardiac arrest.

    • Naofumi Bunya, Hirofumi Ohnishi, Takehiko Kasai, Ryo Nishikawa, Keigo Sawamoto, Shuji Uemura, and Narimatsu Eichi.
    • Department of Emergency Medicine, Sapporo Medical University, S1W16 Chuo-ku, Sapporo, Japan. Electronic address: naobun1221@gmail.com.
    • Am J Emerg Med. 2024 Nov 4; 87: 9510495-104.

    BackgroundWhen the initial rhythm of cardiac arrest is non-shockable, resuscitation outcomes tend to be unfavorable. However, signs of life (gasping, pupillary light reaction, or any form of body movement) have been suggested as favorable prognostic factors for patients with refractory cardiac arrest who are undergoing extracorporeal cardiopulmonary resuscitation (ECPR). This study determined whether signs of life are favorable neurological prognostic factors for patients undergoing ECPR post non-shockable cardiac arrest.Methods And ResultsThis single-center retrospective study included 227 refractory out-of-hospital cardiac-arrest patients who had undergone ECPR, divided into four groups according to shockability of initial cardiac rhythms and presence of signs of life. Initial cardiac rhythms were shockable in 154 patients (67.8 %) and non-shockable in 73 (32.2). Favorable neurological outcomes were observed in 4.1 %, 48.2 %, 0.0 %, and 38.7 % of patients with shockable rhythm without signs of life, shockable rhythm with signs of life, non-shockable rhythm without signs of life, and non-shockable rhythm with signs of life, respectively, with significant differences. Multivariate logistic regression analysis showed an independent association of signs of life during resuscitation with favorable neurological outcomes. The adjusted odds ratios for patients with shockable and non-shockable rhythm with signs of life were 34.33 and 96.51, respectively, compared with those without signs of life.ConclusionsSigns of life during resuscitation were favorable prognostic factors in patients with refractory cardiac arrest and non-shockable rhythm. When these patients are considered for ECPR, the status of signs of life during resuscitation may facilitate the decision to perform ECPR.Copyright © 2024. Published by Elsevier Inc.

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