食道心房调搏在诊断室上速中的运用价值

Evaluation of TAP in the Diagnosis of PSVT

目的：通过运用食道心房调搏检查，对疑有阵发性室上性心动过速发作的７０例患者进行复制。方法：经行Ｓ１、Ｓ２或Ｓ１、Ｓ２、Ｓ３程扫刺激后，复制出室上速６２例人次，复制率８８５７％，再行食道心房标测。结果：根据折返部位分类，其中房室结折返性心动过速慢－快型占５４９％，房室折返性心动过速正传型占４１９％，窦房结折返性心动过速占１６％，心房内折返性心动过速占１６％。结论：通过食道心房调搏、标测检查能明确室上速的原因。

Objective:To use transesophageal atrial pacing(TAP) to duplicate superventricular tachycardia(SVT) in 70 cases with suspected paroxysmal superventricular tachycardia(PSVT).Methods:Duplicating and labeling SVT in 62 cases through program ectopic stimulation(S1,S2 or S1,S2,S3). Results:The success rate of duplication reaches 8857%.Of the studied cases, the slow-fast pathway of atrial ventricular node reentrant tachycardia(AVNRT) accounts for 5490%, antegrade atrial ventricular reentrant tachycardia(AVRT) 4190%,sinus node reentrant tachycardia (SNRT) 16% and intra-atrial reentrant tachycardia (IART) 16% according to the reentrant pathways. Conclusion:TAP with labeling test is helpful to find the causes of PSVT.