[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.


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


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.
Dussaillant
G
G
Laboratorio de Hemodinamia, Hospital Clínico de la Universidad de Chile, Santiago, Chile.
Ayala
F
F
Ramírez
A
A
Ugalde
H
H
Silva
A M
AM
Farías
E
E
Oyonarte
M
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019917:Blood Vessel Prosthesis Implantation; D003324:Coronary Artery Disease / Q000150:complications / Q000601:surgery*; D003331:Coronary Vessels / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization; D011446:Prospective Studies; D012189:Retrospective Studies; D012307:Risk Factors; D015607:Stents; D013997:Time Factors