[无结构性心肌异常的右束支传导阻滞中碎裂电位的评估。通过信号平均心电图在时域和频域进行的研究]

[Evaluation of fragmented potentials in right bundle branch block without structural myocardium abnormalities. Study made by signal-averaged electrocardiogram on time and frequency domain].

作者信息

Ginefra P, Barbosa E C, Christiani L A, Leite M de F, Barbosa P R, Boghossian S H, Scott M, Rangel I M, Silva R S, Albanesi Filho S M

机构信息

Faculdade de Ciências Médicas da Universidade do Estado do Rio de Janeiro.

出版信息

Arq Bras Cardiol. 1998 Nov;71(5):687-94. doi: 10.1590/s0066-782x1998001100008.

DOI:10.1590/s0066-782x1998001100008

PMID:10347952

Abstract

PURPOSE

To evaluate if the presence of right bundle branch block (RBBB), without structural myocardial abnormalities (SMA) can generate fragmented potentials (FP) and spectral turbulence on signal-averaged electrocardiogram (SAECG).

METHODS

Twelve children with atrial septal defect (ASD) and incomplete right bundle branch block (IRBBB without SMA (group I) were compared to 17 children with post-operative tetralogy of Fallot (TF) with CRBBB, all with SMA, 5 with ventricular premature beats and 2 with sustained ventricular tachycardia (group II). All had SAECG on time (TD) and frequency domain (FD) with 5 variables analysed.

RESULTS

All patients of group I had normal variables, in contrast with group II which presented abnormal variables suggesting FP and ST.

CONCLUSION

In ASD without SMA, the isolated IRBBB did not generate FP and ST.

摘要

目的

评估无结构性心肌异常（SMA）的右束支传导阻滞（RBBB）是否会在信号平均心电图（SAECG）上产生碎裂电位（FP）和频谱紊乱。

方法

将12例患有房间隔缺损（ASD）且无SMA的不完全性右束支传导阻滞（IRBBB）患儿（I组）与17例法洛四联症（TF）术后患有完全性右束支传导阻滞（CRBBB）且均有SMA、5例有室性早搏和2例有持续性室性心动过速的患儿（II组）进行比较。所有患儿均按时进行了SAECG检查，分析了时域（TD）和频域（FD）的5个变量。