核素时相分析在预激综合征合并室上速患者射频消蚀治疗中的临床价值

Clinical value of the radionuclide phase analysis in the radiofrequency ablation in W-P-W syndrome complicated with paraxysmal supraventricular tachycardia

应用核素时相分析（ＲＰＡ）对１５例正常人及１７例预激综合征患者射频消蚀（ＲＦＣＡ）术前、术后进行了分析。结果表明：预激综合征患者ＲＦＣＡ术前心室相角程（ＶＷ）较术后及正常人明显增宽（Ｐ＜０．０１），而ＲＦＣＡ术后ＶＷ与正常人无显著差异（Ｐ＞０．０５）。ＲＦＣＡ术前、术后及正常人之间左心功能无显著差异（Ｐ＞０．０５）．ＲＰＡ对预激综合征的诊断，左、右侧旁路的定位与电生理检查相符．ＲＦＣＡ术成功后再作ＲＰＡ，１周以内预激点仍有残留，１周以后均恢复正常。提示：ＲＰＡ是诊断预激综合征、判定ＲＦＣＡ疗效及测定心功能的有效的、非创伤性的临床辅助检查方法之一。

Radionuclide phase analysis(RPA) was carried out in 15 normals and 17 Wolff-Parkinson-White(W-P-W)syndrome before and after RFCA(radiofrequency ablation).VW(ventricular phase angle width) for the patients before RFCA were significantly wider than that for the normal group and the patients after RFCA(P<0.01), but there was no significant difference between normal group and the patients after RFCA(P>0.05). Also, no significant difference in the left ventricular cardiac function was observed among the normal subjects,before and after RFCA(P>0.05).The localization of bytract was correlated well with the electrophysiological study.Usually the pre--excite sites still existed within one week after RFCA, but disappeared after one week.In conclusion,RPA is a noninvasive,effective method for diagnosing W-P-W syndrome,estimating the effect of RFCA and detecting cardicac function.