运动诱发性血管减压性晕厥
Exercise induced vasodepressor syncope.
作者信息
Sneddon J F, Scalia G, Ward D E, McKenna W J, Camm A J, Frenneaux M P
机构信息
Department of Cardiological Sciences, St George's Hospital Medical School, London.
出版信息
Br Heart J. 1994 Jun;71(6):554-7. doi: 10.1136/hrt.71.6.554.
Abstract
Five cases of exercise induced pure vasodepressor syncope in patients without significant structural heart disease are reported. Hypotension and symptoms of syncope or pre-syncope were induced by treadmill exercise testing and in each case limited exercise performance. Evidence of inappropriate peripheral vasodilation, probably as a consequence of ventricular mechanoreceptor stimulation, was shown in all five patients. Head up tilt testing resulted in hypotension in four patients and isoprenaline infusion in the supine position resulted in hypotension in the fifth. These patients had a new condition of exercise induced neurally mediated (vasodepressor) syncope without appreciable structural cardiac abnormalities.
摘要
报告了5例无明显结构性心脏病患者的运动诱发单纯血管减压性晕厥。通过跑步机运动试验诱发了低血压以及晕厥或晕厥前症状，且在每种情况下运动表现均受限。所有5例患者均显示存在不适当的外周血管扩张，这可能是心室机械感受器刺激的结果。4例患者进行头高位倾斜试验时出现低血压，第5例患者在仰卧位输注异丙肾上腺素时出现低血压。这些患者患有运动诱发的神经介导性（血管减压性）晕厥这一新病症，且无明显的结构性心脏异常。
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