摘要
３４例阵发性室上性心动过速（室上速）患儿经食管心房调搏检查，诊断为房室结折返１３例。快慢径有效不应期分别为３３７±５９．４６ｍｓ和２７８±７１．２４ｍｓ（Ｐ＜０．０５）；传导时间分别为２２０±５０ｍｓ和３０８±５８．０９ｍｓ（Ｐ＜０．０５）。旁室旁道折返１９例，其中６例为隐性，旁道前向有效不应期２００～３２０ｍｓ，与年龄呈正相关，但无显著性。自律性房住心动过速２例。儿童ＳＶＴ以房室折返为主，测定ＰＶ１－ＰＥ时距及ＲＰＥ间期有助于鉴别折返性室上速的类型及旁道位置。房室结折返ＰＶ１－ＰＥ时距近于零，房室折返为３４．２９±８．５ｍｓ．左侧旁道为正值，右侧为负值。但ＰＶ１有时辨认不满意，有局限性。房室结折返ＲＰＥ间期＜７０ｍｓ．而旁路折返则＞７０ｍｓ。
Thirty-four patients with paroxysmal supraventricular tachycardia (SVTIwere studied by transesophageal atrial pacing (TEAP). There were atrioventricular node reentry(AVNRT) in 13 cases, atrioventricular reentry (AVRT) in 19 cases, including 6 cases withconcealed AVRT, and 2 cases with ectopic atrical tachycardia. The effective period (EFP) offast pethway was longer than that of slow pathway (337± 59. 46 vs 278± 71. 24 ms, P<0. 05 ). The conduction time in fast pathway was shorter than that in slow pathway (220± 50 vs308 ±53. 09 ms, P<0. 05). The antesrade ERP of accessory pathway (AVAP) ranged from200 to 320 ms. There was a direct correlation between age and antegrade ERP of AVAP, but nosignificant (r= 0. 04 , P>0. 05). Pv1 ￣PE and RPE interval can be used as an important para-menter in the differential diasnosis of SVT. In AVRT, Pv1￣PE= 34. 29±8. 5 ms, and RPE>70 ms. In AVNRT, Pv1￣PE0, and RPE<70 ms.
出处
《临床心电学杂志》
1994年第2期59-62,共4页
Journal of Clinical Electrocardiology
关键词
食管心房调搏
心动过速
儿童
诊断
Transesophageal atrial pecing
Superventricular tachycardie
