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右束支与房室结间裂隙现象易与右束支阻滞伴超常传导相混淆。现举2例予以讨论。例1:右束支一房室结间裂隙现象。患者男,48岁,因窦缓做食道心房调搏。SNRT、SNRTC SACT均正常。PS_2间期400ms时,S_2诱发的QRS波正常,当PS_2间期缩短到390ms时,S_2诱发的QRS波呈右束支阻滞图形。此PS-2间期代表
Right bundle branch fissure and atrioventricular junction between the phenomenon easy to right bundle branch block with abnormal conduction confused. Now give 2 cases to be discussed. Example 1: Right bundle branch fissure between the atrioventricular node phenomenon. Male patient, 48 years old, because of sinus slow esophageal atrial pacing. SNRT, SNRTC SACT are normal. When PS_2 interval was 400ms, QRS wave induced by S_2 was normal. When PS_2 interval was shortened to 390ms, QRS wave induced by S_2 showed a pattern of right bundle branch block. This PS-2 interval represents