持续性房性心动过速是一种临床少见的心律失常,而无P波性房性心动过速更为罕见,迄今仅见2例报告。临床上若无心腔内心电图的证实,常易误诊为交界性心动过速,若时限正常的QRS波呈成组型出现(group beating),则往往被误诊为伴文氏型外传阻滞。本文报告我院收治1例,并简要讨论其发生机制和病因。 Persistent atrial tachycardia is a clinically rare arrhythmia, and no P-wave atrial tachycardia is more rare, so far only 2 cases reported. Clinically, if there is no confirmation of intracardiac electrocardiogram, often misdiagnosed as borderline tachycardia, if the normal QRS wave grouping occurs (group beating), it is often misdiagnosed as the accompanying type of block. This article reports 1 case admitted to our hospital, and briefly discuss the mechanism and etiology.