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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 (supraventricular tachycardia) underwent esophageal atrial pacing examination and 13 cases were diagnosed as atrioventricular nodal reentry. The effective refractory periods were 337 ± 59.46 ms and 278 ± 71.24 ms, respectively (P <0.05). The conduction time was 220 ± 50 ms and 308 ± 58.09 ms respectively (P <0.05). 19 cases of recumbent bypass pathways, including 6 cases of recessive, effective pre-access should not be about 200 ~ 320ms, with age was positively correlated, but no significant. Self-discipline housing tachycardia in 2 cases. SVR in children with reentry-based, determination of PV1-PE time interval and RPE interval help identify the type of reentry SVS and bypass location. Atrioventricular node return PV1-PE when the distance is near zero, atrioventricular rebound 34.29 ± 8.5ms. The left bypass is positive and the right is negative. However, PV1 is not recognized sometimes identified, there are limitations. Atrioventricular node foldback RPE interval <70ms. The bypass reentry then> 70ms.