下壁心梗病人中的梗塞周围阻滞与心室晚电位

Peri-infarction block and vertricular late potentials in patients with inferior myocardial infarction

高危性室性心律失常是影响心梗病人预后的重要因素,早期发现和预防具有积极的意义。本文对一组单纯下壁梗塞的病人作了观察,探讨了梗塞周围阻滞与心室晚电位和心律失常的关系。发现下壁导联 QRS 波存在梗塞周围阻滞组,其心室晚电位的阳性率及室性心律失常的发生率均明显高于无梗塞周围阻滞组,P 值分别<0.001和<0.01。梗塞周围阻滞与晚电位阳性的相关性良好。因心电图检查更为普及、简捷,它可作为与心室晚电位检查互补的一项有效指标。

The fatal ventricular arrhythmia is a very important factor which might influence the prognosis of the patients with inferior myocardial infarction (MI).Its early detec- tion and early prevention are of utmost importance.We observed a group of patients with only inferior MI and studied the relationship between peri-infarction block (PERI) and ventricular late potentials (LPs) and ven- tricular arrhythmia.We found the positive rate of LPs and the incidence rate of ventricular arrhythmia in the group of PERI were significantly higher than in the group of NONPERI.(P<0.001 and P<0.01 respectively). Significant correlation existed between PREI and LPs. Since ECG is simpler and more popular,it might be used as an effective complementary means of LPs.