[Late results of coronary revascularization with saphenous vein and internal thoracic artery grafts].
OBJECTIVE
To evaluate the patency of saphenous vein and internal thoracic artery grafts by coronary system using angiographies performed in symptomatic patients after coronary artery bypass grafting.


METHODS
From 1999 to 2006, 685 patients (mean age, 59.1+/-11.8 years) had angiography of 538 internal thoracic and gastroepiploic artery and 1644 saphenous vein grafts. There were 580 (84.7%) males. The mean period from operation to the performance of reangiogram was 73.3+/-53.5 months. Graft failure was defined as >95% stenosis. The saphenous vein was grafted to the left anterior descending artery in 106 (6.4%), to the diagonal artery in 364 (22.1%), to the obtuse marginal artery in 629 (38.3%), and to the right coronary artery in 545 (33.1%) cases.


RESULTS
During the study, 1496 (68.97%) grafts were patent, and 686 (31.0%) had failed. Unadjusted 1-, 5-, 10-, and >10-year patency was 91.0%, 89.9%, 90.1%, and 75% for internal thoracic arteries and 79.9%, 68.6%, 57.4%, and 51.0% for saphenous veins, respectively.


CONCLUSIONS
Internal thoracic arteries demonstrate better patency than saphenous veins except when grafting moderately stenosed coronary arteries. When bypassing coronary arteries with less than 70% stenosis, saphenous veins may be a better choice.
Kinduris
Sarūnas
S
Kauno medicinos universiteto Biomedicininiu tyrimu institutas. kinsar@gmail.com
Sakalauskas
Juozas
J
Verseckaite
Raimonda
R
Kaklauskaite
Gintare
G
D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000379:methods*; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000601:surgery* / Q000628:therapy; D003627:Data Interpretation, Statistical; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008323:Mammary Arteries / Q000637:transplantation*; D008875:Middle Aged; D012189:Retrospective Studies; D012501:Saphenous Vein / Q000637:transplantation*; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D014654:Vascular Patency