• Paweł Podsiadło, Agata Smoleń, Sylweriusz Kosiński, Hubert Hymczak, Szymon Waligórski, Anna Witt-Majchrzak, Dominik Drobiński, Ewelina Nowak, Barbara Barteczko-Grajek, Krzysztof Toczek, Radomir Skowronek, and Tomasz Darocha.
• Institute of Medical Sciences, Jan Kochanowski University, Kielce, Poland.
• Resuscitation. 2021 Jul 1; 164: 108-113.

AimTo assess the impact of the occurrence of cardiac arrest associated with initial management on the outcome of severely hypothermic patients who were rewarmed with Extracorporeal Life Support (ECLS).MethodsWe collected the individual data of patients in a state of severe accidental hypothermia who were found with spontaneous circulation and rewarmed with ECLS, from cardiac surgery departments. Patients were divided into two groups: those with a subsequent cardiac arrest (RC group); and those with the retained circulation (HT3 group), and compared by using a matched-pair analysis. The mortality rates and the neurological status in survivors were compared as the main outcomes. The difference in the risk of death between the HT3 and RC groups was calculated.ResultsA total of 124 patients were included into the study: 45 in the HT3 group and 79 in the RC group. The matched cohorts consisted of 45 HT3 patients and 45 RC patients. The mortality rate in both groups was 24% and 49% (p = 0.02) respectively; the relative risk of death was 2.0 (p = 0.02). ICU length of stay was significantly longer in the RC group (p < 0.001). Factors associated with survival in the HT3 group included patient age, rewarming rate, and blood BE; while in the RC group, patient age and lactate concentration.ConclusionsThe occurrence of rescue collapse is linked to a doubling of the risk of death in severely hypothermic patients. Procedures which are known as potential triggers of rescue collapse should be performed with special attention, including in conscious patients.Copyright © 2021 Elsevier B.V. All rights reserved.

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