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阵发性室上性心动过速(PSVT)是起源于希氏束或希氏束以上的突发突止的心动过速,是快速心律失常的主要类型~[1],大部分是由折返机制引起,少数为自律性增高和触发激动所致。发作时心悸、胸闷,少数患者心动过速持续导致心力衰竭,极少数因心室率过快导致室性心动过速、心室颤动而危及生命。老年人的PSVT多伴有器质性心脏病,如窦房结功能退化,心功能不全,终止后极易出现窦性心动过缓或停搏,甚至出
Paroxysmal supraventricular tachycardia (PSVT) is a sudden-onset tachycardia that originates from either His or Behs beam and is the major type of tachyarrhythmia [1], most of which is caused by a turnaround Mechanism, a few due to increased self-discipline and triggered by the excitement. Palpitation attacks, chest tightness, a small number of patients continued to lead to heart failure tachycardia, very few due to ventricular rate lead to ventricular tachycardia, ventricular fibrillation and life-threatening. PSVT in elderly patients often accompanied by organic heart disease, such as deterioration of sinoatrial node function, cardiac insufficiency, prone to sinus bradycardia after termination or arrest, or even out