经皮腔内冠状动脉成形术对心肌梗塞患者心电图及运动耐量的影响

Impact of percutaneous translummal coronary angioplasty on electrocardiogram and exercise capacity after acute myocardial infarction

对23例心肌梗塞(MI)患者于发病后6±3周行经皮腔内冠状动脉成形术(PTCA),并于PTCA前(平均3±2d)、后(平均6±3d)记录心电图和行平板运动试验.结果显示,PTCA成功19例(管腔狭窄由93.5%±6.4%降至16.3%±11.1%).其运动耐量、时间、最大心率及心率与收缩压乘积明显增高,而QRS积分显著减低.提示,PTCA对MI恢复期患者心功能改善具有明显的有益作用.

In 23 patients, percutaneous transluminal coronary angioplasty (PTCA) was performed 6±3 weeks after acute myocardial infarction ,and treadmill testing was carried out 3±2 days before and 6±3 days after the procedure. PTCA was successful in 19 patients with a reduction in coronary stenosis from 93. 5±6. 4% to 16. 3±11.1%. Exercise duration,maximal heart rate and rate-pressure product were increased, but QRS score was decreased after PTCA. This study suggests that PTCA performed during the recovery phase of acute myocardial infarction may significantly improve exercise capacity and functional status of the patients.