射频消融术后心室局部传导延迟电位的观察

Observation on delayed potential of regional ventricular conduction after radlofrequency ablation

用食管导联系统和体表直角导联系统检测12例射频消融术后病人的心室局部延迟电位.结果发现,食管导联系统中有4例在术后1周呈阳性,且1例伴发短阵室速,此可能与折返机理有关.食管导联系统有助于检测心室基底部的传导延迟电位.

Ventricular late potential ( VLP ) has been studied with esophageal lead system (ELS) and body surface lead system (BLS) in 12 patients after radiofrequency ablation (RFA). Four patients showed VLP in ELS one week after RFA. of whom one demonstrated short-run ventricular tachycardia on the Holter records, indicating the possibility of reentrant activity. We conclude that the ELS is of use to detect VLP from the ventricular base.