[Endovascular stent implantation in the treatment of coronary artery disease: angiographic, and immediate and late clinical results].

BACKGROUND

Coronary revascularization allows a better survival and quality of life in high risk patients with coronary artery disease.

AIM

To report the experience in stent placement as treatment for obstructive atherosclerotic coronary artery disease.

PATIENTS AND METHODS

A prospective analysis of 105 stent placements. A morphological and quantitative analysis of coronary angiograms, using an electronic caliper, was performed. Patients were followed during their hospital stay and after discharge.

RESULTS

In four of 112 coronary lesions, it was not possible to liberate the stent and in 108, it was successfully placed (48 in anterior descending, 19 in circumflex, 36 in right coronary arteries and 5 in saphenous aortocoronary by-pass. Lesions with stent implantation were type A in 11%, B1 in 30%, B2 in 44% and C in 15%. Reference diameter was 3.13 +/- 0.58 mm. After placement, luminal diameter increased from 0.95 +/- 0.43 to 2.99 +/- 0.46 mm, with a final stenosis of 7.2 +/- 10.1%. Angiographic success was obtained in 99% and procedure success in 98%. Hospital mortality was 0.98%. After a mean of eight months follow up, 91% of patients is free of major cardiac events. In 17% angina recurred and 5% required a new revascularization. There were no late cardiac deaths, acute stent thrombosis or infarction in relation to the treated lesion.

CONCLUSIONS

In these patients, stent placement has had excellent immediate and late results.