Equine anaesthesia is associated with a high risk of perioperative morbidity and mortality, particularly in the recovery period. Cardiovascular collapse and cardiopulmonary arrest (CPA) have been reported to account for one-third of anaesthesia-related perioperative deaths in the horse. This case report describes the successful cardiopulmonary resuscitation of a healthy adult Thoroughbred mare that developed cardiovascular collapse and subsequent CPA following positioning in the recovery box after general anaesthesia in the Trendelenburg position. Cardiopulmonary resuscitation (CPR) was instigated and included thoracic compressions, intermittent positive pressure ventilation and adrenaline administered via the intravenous and intra-tracheal routes. Return of spontaneous circulation (ROSC) was detected 5 min and 50 s after the start of CPR. A stable stance was achieved approximately 100 min after ROSC. The mare was discharged from the hospital 3 days later with no known complications. To the authors’ knowledge, this is the first case report documenting CPA following general anaesthesia in the Trendelenburg position in a horse, with subsequent successful CPR. The precise cause of the CPA is unknown but a number of plausible hypothesis are discussed including hypoventilation and a Bezold-Jarisch reflex.

中文翻译：

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一匹成年马在特伦德伦伯卧位全身麻醉恢复后心血管衰竭后成功进行心肺复苏

马麻醉与围手术期发病率和死亡率的高风险相关，特别是在恢复期。据报道，心血管衰竭和心肺骤停（CPA）占马麻醉相关围手术期死亡的三分之一。本病例报告描述了健康成年纯种马成功心肺复苏，该母马在特伦德伦伯卧位全身麻醉后，在恢复箱中定位后出现心血管衰竭和随后的 CPA。发起了心肺复苏术（CPR），包括胸外按压、间歇性正压通气和通过静脉内和气管内途径施用的肾上腺素。在 CPR 开始后 5 分钟和 50 秒检测到自主循环 (ROSC) 恢复。ROSC 后大约 100 分钟达到稳定的姿势。3天后，母马出院，没有任何已知的并发症。据作者所知，这是第一个记录在马特伦德伦伯卧位全身麻醉后进行 CPA 并随后成功进行 CPR 的病例报告。CPA 的确切原因尚不清楚，但讨论了一些似是而非的假设，包括通气不足和 Bezold-Jarisch 反射。