• Yuka Sumi, Carola Ledderose, Linglin Li, Yoshiaki Inoue, Ken Okamoto, Yutaka Kondo, Koichiro Sueyoshi, Wolfgang G Junger, and Hiroshi Tanaka.
• Department of Emergency and Critical Care Medicine, Juntendo University, Urayasu Hospital, Urayasu, Chiba, Japan.
• Shock. 2019 Jun 1; 51 (6): 698-705.

AbstractCerebral and cardiac dysfunction cause morbidity and mortality in postcardiac arrest syndrome (PCAS) patients. Predicting clinical outcome is necessary to provide the optimal level of life support for these patients. In this pilot study, we examined whether plasma ATP and adenylate levels have value in predicting clinical outcome in PCAS patients. In total, 15 patients who experienced cardiac arrest outside the hospital setting and who could be reanimated were enrolled in this study. Healthy volunteers (n = 8) served as controls. Of the 15 PCAS patients, 8 died within 4 days after resuscitation. Of the 7 survivors, 2 lapsed into vegetative states, 1 survived with moderate disabilities, and 4 showed good recoveries. Arterial blood samples were drawn immediately after successful resuscitation and return of spontaneous circulation (ROSC). The concentrations of ATP and other adenylates in plasma were assessed with high-performance liquid chromatography. PCAS patients had significantly higher ATP levels than healthy controls. Plasma ATP levels correlated with lactate levels, Acute Physiology and Chronic Health Evaluation II scores, and the time it took to ROSC (time-to-ROSC). Plasma adenylate levels in patients who died after resuscitation were significantly higher than in survivors. Based on our results and receiver-operating characteristic curve analysis, we conclude that plasma adenylate levels may help predict outcome in PCAS patients.

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