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应用食管调搏，检测６４例旁道（ＡＰ）参与的房室折返性心速患者Ⅰ、Ⅱ、Ｖ＿１和食管导联的室房时距（ＲＰ’）、Ｐ＿（ｖ１）Ｐ＇＿Ｅ和△ＲＰ’时距（ＲＰ＿（Ｖ１）与ＲＰ’＿Ⅰ之差）。发现左侧ＡＰ者ＲＰ＿Ⅰ较ＲＰＶ１短（Ｐ＜０．０１），而右侧ＡＰ时较ＲＰＶ＿１长（Ｐ＜０．０１）；无论ＡＰ位于何侧心腔，ＲＰ＇＿Ｉ与ＲＰ＇＿Ｅ、△ＲＰ’和ＰＶ＿１－Ｐ＇＿Ｅ时距均基本相等（Ｐ＞０．０５）；两侧ＡＰ＿Ⅱ时距无差异（Ｐ＞０．０５）。提示测量Ｒ’＿Ⅰ和ＲＰ＿（Ｖ１）时距有助于区分左右ＡＰ；Ｐ＇＿Ⅰ和Ｐ’Ｅ相同，也主要反映了左房除极，在ＡＰ定位时，△ＲＰ’和Ｐ’＿（Ｖ１）－Ｐ’＿Ｅ时距有同等的意义；Ｐ’Ｉ并不特定表示某一侧心房除极，ＲＰ＇＿Ⅱ与ＡＰ的左右位置无关。
Application of esophageal pacing, detection of 64 cases of reentrant AP in atrioventricular reentrant heart rate Ⅰ, Ⅱ, V_1 and esophageal lead of the room time (RP ’), P_ (v1) P’_E and △ RP ’time interval (difference between RP_ (V1) and RP’_I). It was found that RP_Ⅰ in left AP was shorter than that in RPV1 (P <0.01), while right AP was longer than RPV_1 (P <0.01). No matter AP was located in the lateral cavity, RP’_I and RP’_E, △ RP ’and PV_1-P’_E were basically the same (P> 0.05). There was no difference in the time of APⅡ between the two sides (P> 0.05). Prompt measurement of R’_I and RP_ (V1) time-lag helps distinguish between left and right AP; P’_I and P’E the same, also mainly reflects the left atrial depolarization, AP positioning, △ RP ’and P’ _ V1) -P’_E interval have the same meaning; P’I does not specifically indicate that a side of the atrial depolarization, RP’_ Ⅱ and AP position has nothing to do.