Byung Kook Lee1, Youn-Jung Kim2, Seung Mok Ryoo2, Su Jin Kim3, Dong Hun Lee1, Kyung Woon Jeung1, Won Young Kim4. 1. Department of Emergency Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea. 2. Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea. 3. Department of Emergency Medicine, College of Medicine, Korea University, Seoul, Republic of Korea. 4. Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea. Electronic address: wonpia73@naver.com.
Abstract
PURPOSE: Newly updated guidelines suggest brain computed tomography for out-of-hospital cardiac arrest survivors to identify a neurologic cardiac arrest cause. We hypothesized that the "pseudo-subarachnoid hemorrhage" (p-SAH) sign in cardiac arrest survivors is associated with poor outcome. MATERIALS AND METHODS: We retrospectively evaluated the registries of 2 tertiary hospitals, identifying 836 adult (≥18 years) patients achieving return of spontaneous circulation after out-of-hospital cardiac arrest. Among them, 398 patients with brain computed tomography within 6 hours after return of spontaneous circulation and received targeted temperature management from 2009 to 2014 were included. Clinical characteristics and outcomes of patients with and without p-SAH were compared. RESULTS: The prevalence of p-SAH sign was 8.0%. The p-SAH group more frequently had asystole as first rhythm and nonwitnessed arrest, predominantly resulting from asphyxia (56.3%). Targeted temperature management characteristics were not different between groups, although the p-SAH cohort had worse neurologic outcomes at discharge (100% vs 67.2%; P < .001). Pseudo-subarachnoid hemorrhage had 11.5% sensitivity, 100% specificity, 100% positive predictive value, and 32.8% negative predictive value for poor neurologic outcome. CONCLUSIONS: Pseudo-subarachnoid hemorrhage sign might be one of the simple methods to identify poor neurologic outcome early. However, further prospective studies will be needed to clarify the clinical implication of the p-SAH sign.
PURPOSE: Newly updated guidelines suggest brain computed tomography for out-of-hospital cardiac arrest survivors to identify a neurologic cardiac arrest cause. We hypothesized that the "pseudo-subarachnoid hemorrhage" (p-SAH) sign in cardiac arrest survivors is associated with poor outcome. MATERIALS AND METHODS: We retrospectively evaluated the registries of 2 tertiary hospitals, identifying 836 adult (≥18 years) patients achieving return of spontaneous circulation after out-of-hospital cardiac arrest. Among them, 398 patients with brain computed tomography within 6 hours after return of spontaneous circulation and received targeted temperature management from 2009 to 2014 were included. Clinical characteristics and outcomes of patients with and without p-SAH were compared. RESULTS: The prevalence of p-SAH sign was 8.0%. The p-SAH group more frequently had asystole as first rhythm and nonwitnessed arrest, predominantly resulting from asphyxia (56.3%). Targeted temperature management characteristics were not different between groups, although the p-SAH cohort had worse neurologic outcomes at discharge (100% vs 67.2%; P < .001). Pseudo-subarachnoid hemorrhage had 11.5% sensitivity, 100% specificity, 100% positive predictive value, and 32.8% negative predictive value for poor neurologic outcome. CONCLUSIONS: Pseudo-subarachnoid hemorrhage sign might be one of the simple methods to identify poor neurologic outcome early. However, further prospective studies will be needed to clarify the clinical implication of the p-SAH sign.
Authors: Neill K J Adhikari; Damon C Scales; Carmen Lopez Soto; Laura Dragoi; Chinthaka C Heyn; Andreas Kramer; Ruxandra Pinto Journal: Neurocrit Care Date: 2020-02 Impact factor: 3.210