三磷酸腺苷对宽或窄QRS波心动过速的鉴别

Adenosine triphosphate to differentiate broad or narrow QRS complex tachycardia

对７６例心动过速施行了三磷酸腺苷（ＡＴＰ）分级递增快速静脉注射试验，旨在评价ＡＴＰ对宽或窄ＱＲＳ波心动过速的鉴别诊断价值。ＡＴＰ静脉注射后，５９／６４例有房室结参与折返的宽或窄ＱＲＳ波折返性室上性心动过速被终止，８／８例窄ＱＲＳ波房性心律失常（房速３例、房扑４例、房颤１例）出现２°房室阻滞，３／３例预激合并房颤短时内预激波更明显，１例室速未被终止。结果表明。

In order to evaluate the distinguished diagnostic value of intravenous adenosine triphoshate(ATP) on broad or narrow QRS complex tachycardia,testing with stepwise increamental doses of intravenous bolus ATP was performed in 76 patients with broad or narrow QRS complex tachycardia.After intravenous ATP,tachycardia was terminated in 59 of 64 patients with broad or narrow QRS complex reentrant supraventricular tachycardia with mechanisms involving the AV node,2° AV block was induced in 8/8 patients with narrow QRS complex atrial arrhythmias (atrial tachycardia 3,atrial flutter 4,and atrial fibrillation 1),and the δ waves were more marked in 3/3 patients with preexcited atrial fibrillation.The tachycardia was not terminated in one patient with ventricular tachycardia.These results show that intravenous ATP has the differential diagnostic value on broad or narrow QRS complex tachycardia.