effect of enhanced external counterpulsation (eecp) on exercise time duration and functional capacity in patients with refractory angina pectoris

background: enhanced external counterpulsation (eecp) is a noninvasive technique used for patients with refractory angina pectoris. there are controversial data on the effectiveness of eecp in improving patients with refractory stable angina. the aim of the present study was to evaluate the effectiveness and safety of eecp for the treatment of patients with refractory angina pectoris. methods: t wenty consecutive patients with refractory angina pectoris were treated with eecp, and their symptoms, echocardiographic measures, treadmill exercise test parameters, and canadian cardiovascular society class were evaluated before and immediately after eecp. the patients were followed up for 6months post treatment. results: there were significant differences regarding total exercise time before and after treatment (p value < 0.001). the patients showed a significant reduction in angina classes iii and iv immediately after eecp (p value < 0.001); for most of the patients, these beneficial effects were sustained for 6 months (p value = 0.010). there was no significant improvement in the echocardiographic parameters. conclusion: eecp decreased symptoms and increased total exercise time in our study population. these beneficial effectswere sustained for 6 months.