束支传导阻滞患者Q-T、J-T离散度与室性心律失常的关系

Relationship between Q-T_d, J-T_d, in patients with BBB and ven-tricular arrhythmia

为探讨左、右束支传导阻滞患者Q-T_d、J-T_d与室性心律失常之间的关系,观察63例右束支传导阻滞、30例左束支传导阻滞并与30例正常QRS波群者作对照。结果显示:束支传导阻滞两组的Q-T_d、J-T_d值比对照组显著增高,差异有非常显著意义(P<0.01);左束支传导阻滞组的Q-T_d、J-T_d值高于右束支传导阻滞组,但两者Q-T_d差异无显著意义(P>0.05),而两者J-T_d差异有显著意义(P<0.05)。提示束支传导阻滞时J-T_d更能反映心肌复极情况,J-T_d值较高的左束支传导阻滞组临床上高危室性心律失常发生率较高。

In order to disscuss relationship between rise of Q-Td andJ-Td in patients with LBBB or RBBB and high risk ventricular arrhythmia, authors observed 63 patients with RBBB, 30patients with LBBB and 30 normal controls. Results showed that Q-Td and J-Td in both bundle branch blocks were higher than those of controls with very significant difference (P < 0. 01) . Q-Td, and J-Td in patients with LBBB were higher than those of RBBB patients. Q-Td of two groupe had no significant difference (P > 0.05) . But their J -Td had of remarkable difference (P < 0.05) .It showed that J-Td could better reflect conditions of myoeardia repolarization and that incidence rate of high risk ventricular arrhythmia was higher in LBBB patients with elevated J-Td .