Journal ArticleDOI
The internal mammary artery graft. Its longevity after coronary bypass
TLDR
Patients who received internal mammary artery (IMA) grafts were reviewed seven to nine years after surgery; 91.6% of these patients are still alive and there was little, if any, evidence of atherosclerosis in the IMAs.Abstract:
Two hundred ninety-eight patients who received internal mammary artery (IMA) grafts were reviewed seven to nine years after surgery; 91.6% of these patients are still alive. In 29.5% of these patients there was postoperative graft visualization, and 90% of the studies were performed because of suspected graft failure. Attrition of the IMA graft was minimal. At zero to 24 months after surgery, 93.4% of grafts were patent. At 60 to 108 months 94.4% were patent and there was little, if any, evidence of atherosclerosis in the IMAs. Precise technique in preparation and anastomosis of the IMA is essential for long-term patency. For bypassing obstructive lesions, we recommend selection of the IMA (if it has sufficient size and flow) for use in the left anterior descending, large diagonal, or marginal vessel in the left coronary artery circulation. ( JAMA 1981;246:2181-2183)read more
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Journal ArticleDOI
Long-term (5 to 12 years) serial studies of internal mammary artery and saphenous vein coronary bypass grafts.
Bruce W. Lytle,Floyd D. Loop,Delos M. Cosgrove,Norman B. Ratliff,Kirk A. Easley,Paul C. Taylor +5 more
TL;DR: Between 5 and 12 years after operation, the attrition rate of vein grafts greatly exceeded that of mammary artery grafts, and early vein graft patency was influenced by the coronary artery grafted and by angina.
Journal ArticleDOI
Comparative anatomic studies of various arterial conduits for myocardial revascularization.
TL;DR: The relatively scanty presence of smooth muscle cells in the thin-walled media of the internal mammary artery combined with a well-formed internal elastic lamina may be an important cause for its low susceptibility to atherosclerosis and a major determinant in its superior long-term patency as a coronary artery bypass graft.
Journal ArticleDOI
Twelve-year experience with internal mammary artery for coronary artery bypass.
TL;DR: The demonstrated superior patency for internal mammary artery grafts supports the routine use of bilateral internal mammaries artery grafting in patients having isolated coronary bypass only.
Journal ArticleDOI
Interaction between endothelin-1 and endothelium-derived relaxing factor in human arteries and veins.
Thomas F. Lüscher,Zhihong Yang,M. Tschudi,L. K. Von Segesser,Peter Stulz,Chantal M. Boulanger,R. Siebenmann,Marko Turina,Fritz R. Bühler +8 more
TL;DR: EDRF inhibits endothelin-1-induced contractions, whereas the peptide specifically attenuates the effects of EDRF and nitrovasodilators in veins, which may be important in pathological conditions associated with increased levels of endotheli-1 and in veins used as coronary bypass grafts.
Journal ArticleDOI
Single versus bilateral internal mammary artery grafts: 10-year outcome analysis
TL;DR: Bilateral IMA grafting was an independent predictor of lower rates of angina recurrence, late myocardial infarction, and the composite end point of any cardiac event, and independent risk factors for late death were diabetes mellitus, older age, and reduced ejection fraction.
References
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Journal ArticleDOI
Coronary Arterial Bypass Grafts
TL;DR: This report evaluates the feasibility of bypass grafting to coronary segments of 1 mm. in diameter to offer important relief to patients with coronary occlusive disease.
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Atherosclerosis of the internal mammary artery.
TL;DR: The degree of incipient atherosclerosis correlated well with age, hypertension, diabetes, and peripheral vascular disease, and the level of atherosclerotic narrowing in patients seen during routine postmortem examinations.
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Internal Mammary Artery-to-Coronary Artery Anastomosis: Three-Year Experience with 165 Patients
TL;DR: From February, 1968, through June, 1971, internal mammary-to-coronary artery anastomosis was performed in 165 patients, and 1 patient sustained a myocardial infarction, but there were no fatal infarctions during 2,047 cumulative patient-months of follow-up.
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Comparative hemodynamic properties of vein and mammary artery in coronary bypass operations.
TL;DR: Vein bypasses exhibited far superior hemodynamic capability in the resting state, and the effect of atrial pacing on the DPTI/TTI ratio in IMA-vein-left ventricle bypasses confirms this point.
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Isolated left anterior descending coronary atherosclerosis: long-term comparison of internal mammary artery and venous autografts.
TL;DR: Recommendations for revascularization can be made selectively to patients with critical isolated left anterior descending stenoses who have limiting symptoms and large areas of viable myocardium at risk.