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The Etiology of Sudden Deth in Subarachnoid Hemorrhage Takao KITAHARA 1 , Takashi MASUDA 1 , Kazui SOMA 1 1Department of Emergency and Critical Care Medicine, Kitasato University School of Medicine Keyword: Subarachnoid hemorrhage , Dead on arrival(DOA) , Sudden death , Cardiac arrhythmia , Contraction band necrosis pp.781-786
Published Date 1993/9/10
DOI https://doi.org/10.11477/mf.1436900698

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  • Abstract
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Sudden death due to subarachnoid hemorrhage (SAH) is not uncommon. However, the mechanism remains un-clear. In this paper, sixty-eight consecutive patients with sudden death in SAH (DOA group) were studied to clar-ify the etiology of sudden cardiopulmonary arrest (CPA) in SAH. SAH was confirmed by CT scan and/or by autopsy. These patients accounted for 10% of the total intrinsic DOA patients in that period. Clinical symptoms, CT scan and autopsy findings concerning the DOA group were carefully evaluated and compared to those of patients with SAH of WFNS Grade V (V group). The DOA group accounted for 10% of all SAH pa-tients. Average time interval from the onset of SAH to the recognition of CPA was 21.2 minutes. In 30% of cases, the time interval was within 15 minutes. Pulmo-nary edema was recognized as being significantly higher in the DOA group than in the V group (P< 0.01). In CT finding, the number of patients who were classified into S type (mainly subarachnoid clot only) was significantly higher in the DOA group than in the V group (P< 0.01). The CT Score and MAX. CT NO. in the DOA group were significantly lower than in the V group (P < 0.01 and P < 0.0001, respectively), suggesting that the intensi-ty of subarachnoid hemorrhage was not severe in the DOA group. Postmortem histological examination of the myocardium was carried Out on 6 cases of the DOA group. A contraction band necrosis in the myocardium which did not correspond to the coronary perfusion area was found in all 6 patients. The possible mechanisms re-sponsible for SAH-triggered CPA was discussed. Fatal arrhythmia associated with SAH is suggested to be one of the most important causes of sudden CPA in SAH.


Copyright © 1993, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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