Shiotani Seiji, Kohno Mototsugu, Ohashi Noriyoshi, Atake Shigeru, Yamazaki Kentaro, Nakayama Hidetsugu
Department of Radiology, Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan.
Radiat Med. 2005 Jun;23(4):225-9.
The purpose of this study was to investigate the causes of cardiovascular gas (CVG) detected on non-traumatic postmortem computed tomography (PMCT).
PMCT was performed on 247 subjects within two hours of non-traumatic death, including 228 patients who had undergone cardiopulmonary resuscitation (CPR) and 19 patients who had not. We evaluated the incidence and distribution of CVG in four areas of the heart, namely, 1) the upper course of the right atrium (UC-RA), 2) the right atrium, 3) the right ventricle, and 4) the left heart (left atrium, left ventricle, and aorta).
CVG was observed in 163 (71%) of the 228 patients who underwent CPR. In those 163 patients, we detected CVG in the UC-RA (103 patients), right atrium (81 patients), right ventricle (94 patients), and left heart (5 patients). Nineteen patients who received no CPR showed no CVG.
CVG on non-traumatic PMCT is mainly caused by CPR, which is characterized by venous catheterization that permits possible air inflow and by pneumatization of dissolved gas in the blood as a result of cardiac massage.
本研究旨在探讨非创伤性尸检计算机断层扫描（PMCT）检测到心血管气体（CVG）的原因。
对247例非创伤性死亡后两小时内的受试者进行PMCT检查，其中包括228例接受心肺复苏（CPR）的患者和19例未接受心肺复苏的患者。我们评估了CVG在心脏四个区域的发生率和分布，即1）右心房上段（UC-RA）、2）右心房、3）右心室和4）左心（左心房、左心室和主动脉）。
在228例接受CPR的患者中，有163例（71%）观察到CVG。在这163例患者中，我们在UC-RA（103例）、右心房（81例）、右心室（94例）和左心（5例）检测到CVG。19例未接受CPR的患者未显示CVG。
非创伤性PMCT上的CVG主要由CPR引起，其特征是静脉插管允许空气流入，以及心脏按摩导致血液中溶解气体的气化。
