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吞咽出现的阵发性房室结折返性心动过速(AVNRT)伴3:2及3:1文氏型双向阻滞引起心搏周期长短交替,临床较少见到,我院曾遇到一例。病历摘要男,57岁。因吞咽固体食物时感心慌两个月于1987年4月5日入院。有高血压病史。入院查体无明显异常发现。心脏拍片:左室轻度增大.心脏B超:符合高心病改变。食道吞钡:无异常发现。食道心房调搏及心内电生理检查报告均有房室结双通道。下图是患者入院时边进食边描记的Ⅱ导心电图记录(图片附后) 心电图分析心电图所见:(1)P高0.2mV.宽0.10s;P-P间彻0.56～0.64s;P-R间期0.16s。(2)吞咽前可见窦律逐渐加速。P-P从0.64s逐渐缩短至0.56s。(3)在窦率加速后即出现短阵的心动过速,其心室波群之形态与窦性搏动基本相同,但前面
Swallowing paroxysmal atrioventricular nodal reentrant tachycardia (AVNRT) with 3: 2 and 3: 1 Venturi-type two-way block caused by the alternating short and long cycles of heart rate, clinical less seen in our hospital had a case of . Medical history male, 57 years old. Feeling nervous about swallowing solid food for two months was admitted on April 5, 1987. Have a history of hypertension. Admission examination no obvious abnormalities found. Heart beat: left ventricle slightly increased. B-heart: in line with high heart disease changes. Esophageal barium: no abnormalities found. Esophageal atrial pacing and electrophysiological examination report both atrioventricular node dual channel. The following figure is the patient admitted to the hospital while recording the Ⅱ lead electrocardiogram records (attached) ECG analysis of ECG seen: (1) P 0.2mV wide and 0.10s wide; PP between 0.56 ~ 0.64s complete; PR interval 0.16 s. (2) sinus rhythm before gradual acceleration can be seen swallowing. P-P gradually reduced from 0.64s to 0.56s. (3) A short array of tachycardia occurs after the sinus rate is accelerated, and the shape of the ventricular wave group is basically the same as that of sinus beat, but in front