• Prehosp Emerg Care · Jan 2024

    Observational Study

    Association between case volumes of extracorporeal life support and clinical outcome in out-of-hospital cardiac arrest.

    • Seulki Choi, Ki Jeong Hong, Stephen Gyung Won Lee, Tae Han Kim, Sang Do Shin, Kyoung Jun Song, Young Sun Ro, Joo Jeong, Jeong Ho Park, and Gyeong Min Lee.
    • Department of Emergency Medicine, Seoul National University Hospital, Seoul, South Korea.
    • Prehosp Emerg Care. 2024 Jan 1; 28 (1): 139146139-146.

    AimExtracorporeal life support (ECLS) for out-of-hospital cardiac arrest (OHCA) is increasing. There is little evidence identifying the association between hospital ECLS case volumes and outcomes in different populations receiving ECLS or conventional cardiopulmonary resuscitation (CPR). The goal of this investigation was to identify the association between ECLS case volumes and clinical outcomes of OHCA patients.MethodsThis cross-sectional observational study used the National OHCA Registry for adult OHCA cases in Seoul, Korea between January 2015 and December 2019. If the ECLS volume during the study period was >20, the institution was defined as a high-volume ECLS center. Others were defined as low-volume ECLS centers. Outcomes were good neurologic recovery (cerebral performance category 1 or 2) and survival to discharge. We performed multivariate logistic regression and interaction analyses to assess the association between case volume and clinical outcome.ResultsOf the 17,248 OHCA cases, 3,731 were transported to high-volume centers. Among the patients who underwent ECLS, those at high-volume centers had a higher neurologic recovery rate than those at low-volume centers (17.0% vs. 12.0%), and the adjusted OR for good neurologic recovery was 2.22 (95% confidence interval (CI): 1.15-4.28) in high-volume centers compared to low-volume centers. For patients who received conventional CPR, high-volume centers also showed higher survival-to-discharge rates (adjusted OR of 1.16, 95%CI: 1.01-1.34).ConclusionsHigh-volume ECLS centers showed better neurological recovery in patients who underwent ECLS. High-volume centers also had better survival-to-discharge rates than low-volume centers for patients not receiving ECLS.

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