Dussaillant G, Ayala F, Ramírez A, Ugalde H, Silva A M, Farías E, Oyonarte M
Laboratorio de Hemodinamia, Hospital Clínico de la Universidad de Chile, Santiago, Chile.
Rev Med Chil. 1998 Oct;126(10):1195-205.
Coronary revascularization allows a better survival and quality of life in high risk patients with coronary artery disease.
To report the experience in stent placement as treatment for obstructive atherosclerotic coronary artery disease.
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.
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.
In these patients, stent placement has had excellent immediate and late results.
