Tai Y T, Chow W H, Lau C P, Yau C C
Department of Medicine, University of Hong Kong.
Chin Med J (Engl). 1991 Jul;104(7):567-72.
In the absence of myocardial ischaemia, ventricular tachycardias occurring in patients with structural heart disease rarely respond to calcium antagonists like verapamil. In contrast, verapamil is markedly effective in the acute management of "supraventricular" tachycardias. Thus, intravenous verapamil has often been used for therapeutic and diagnostic purposes in patients with wide QRS complex tachycardias. This report details two unusual cases of ventricular tachycardia that are verapamil-sensitive. They highlight two major categories of "idiopathic" ventricular tachycardia, namely fascicular tachycardia and catecholamine-mediated ventricular tachycardia. The risks of verapamil administration for wide complex tachycardias are also reviewed.
在无心肌缺血的情况下，结构性心脏病患者发生的室性心动过速很少对维拉帕米等钙拮抗剂有反应。相比之下，维拉帕米在“室上性”心动过速的急性处理中显著有效。因此，静脉注射维拉帕米常被用于宽QRS波群心动过速患者的治疗和诊断目的。本报告详细介绍了两例对维拉帕米敏感的不寻常室性心动过速病例。它们突出了“特发性”室性心动过速的两大主要类型，即分支性心动过速和儿茶酚胺介导的室性心动过速。还对宽QRS波群心动过速应用维拉帕米的风险进行了综述。
