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      Bilateral versus Single Internal-Thoracic-Artery Grafts at 10 Years

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          Abstract

          Multiple arterial grafts may result in longer survival than single arterial grafts after coronary-artery bypass grafting (CABG) surgery. We evaluated the use of bilateral internal-thoracic-artery grafts for CABG.

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          Radial-Artery or Saphenous-Vein Grafts in Coronary-Artery Bypass Surgery

          Giuseppe Biondi-Zoccai, David P Taggart, Leonard Girardi … (2018)
          The use of radial-artery grafts for coronary-artery bypass grafting (CABG) may result in better postoperative outcomes than the use of saphenous-vein grafts. However, randomized, controlled trials comparing radial-artery grafts and saphenous-vein grafts have been individually underpowered to detect differences in clinical outcomes. We performed a patient-level combined analysis of randomized, controlled trials to compare radial-artery grafts and saphenous-vein grafts for CABG.
          Article 0 comments Cited 109 times – based on 0 reviews     Review now
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            Coronary bypass graft fate and patient outcome: angiographic follow-up of 5,065 grafts related to survival and reoperation in 1,388 patients during 25 years.

            G FitzGibbon LRCP&S(Ireland), FACC (1996)
            We sought to examine, angiographically, the longterm fate of a large number of mainly venous coronary bypass grafts and to correlate graft patency and disease with patient survival and reoperation. Much is known about bypass graft patency and disease, but the precise relation between graft fate and patient outcome has not been substantiated and documented. A total of 1,388 patients underwent a first coronary artery bypass graft procedure at a mean age of 48.9 years, 234 had a second bypass procedure at a mean age of 53.3 years, and 15 had a third bypass procedure at a mean age of 58.2 years during the 25-year period from 1969 to 1994. Most were male military personnel or veterans; 12% were or = 15 years. Grafts were graded for patency and disease. The status of all patients was known at the study's end. The perioperative mortality rate was 1.4% for an isolated first coronary bypass procedure, 6.6% for reoperation. Vein graft patency was 88% early, 81% at 1 year, 75% at 5 years and 50% at > or = 15 years; when suboptimal grafts, graded B, were excluded from calculation, the proportion of excellent grafts, graded A, decreased to 40% after > or = 12.5 years. After the early study, the vein graft occlusion rate was 2.1%/year. Internal mammary artery graft patency was significantly better but decreased with time. Vein graft disease appeared by 1 year and the rate accelerated by > or = 2.5 years, involving 48% of grafts at 5 years and 81% at > or = 15 years; 44% of the latter grafts were narrowed > 50%. Survival of all patients was 93.6% at 5 years. 81.1% at 10 years, 62.1% at 15 years, 46.7% (150 patients) at 20 years and 38.4% (25 patients) at 23 years after operation. Survival decreased as age increased, but curves approximated "normal" life expectancy for older patients. Survival curves at all ages showed a steeper decline after 7 years. The rate of reoperation increased between 5 years and 10 to 14 years, then decreased to stable levels. Coronary atheroembolism from vein grafts was the major cause of morbidity and mortality associated with reoperation. Vein graft patency and disease were temporally and closely related to reoperation and survival. Coronary bypass graft disease and occlusion are common after coronary artery bypass grafting and increase with time. They are major determinants of clinical prognosis, specifically measured by reoperation rate and survival. Intraoperative graft atheroembolism was a major reoperation hazard. Reoperation is definitely worthwhile but entails identifiable risks that must be dealt with.
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              Two internal thoracic artery grafts are better than one.

              Eugene H. Blackstone, Jamie Arnold, Philippe Akhrass … (1999)
              Does the use of bilateral internal thoracic artery (ITA) grafts provide incremental benefit relative to the use of a single ITA graft? We conducted a retrospective, nonrandomized, long-term (mean follow-up interval of 10 postoperative years) study of patients undergoing elective primary isolated coronary bypass surgery who received either single (8123 patients) or bilateral ITA grafts (2001 patients), with or without additional vein grafts. Multiple statistical methods including propensity score matching, and multivariable parsimonious and nonparsimonious risk factor analyses were used to address the issues of patient selection and heterogeneity. In-hospital mortality was 0.7% for both the bilateral and single ITA groups. Survival for the bilateral ITA group was 94%, 84%, and 67%, and for the single ITA group 92%, 79%, and 64% at 5, 10, and 15 postoperative years, respectively (P <.001). Death, reoperation, and percutaneous transluminal coronary angioplasty were more frequent for patients undergoing single rather than bilateral ITA grafting, and this observation remained true despite multiple adjustments for patient selection, sampling, and length of follow-up. The differences between the bilateral and single ITA groups were greatest in regard to reoperation. The extent of benefit of bilateral ITA grafting varied according to patient-related variables, but no patient subsets were identified for whom single ITA grafting could be predicted to provide an advantage. Patients who received 2 ITA grafts had decreased risks of death, reoperation, and angioplasty.
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                Author and article information

                Journal
                Title: New England Journal of Medicine
                Abbreviated Title: N Engl J Med
                Publisher: New England Journal of Medicine (NEJM/MMS)
                ISSN (Print): 0028-4793
                ISSN (Electronic): 1533-4406
                Publication date Created: January 31 2019
                Publication date (Print): January 31 2019
                Volume: 380
                Issue: 5
                Pages: 437-446
                Affiliations
                [1 ]From the Nuffield Department of Surgical Sciences, John Radcliffe Hospital (D.P.T., B.L.), the Centre for Statistics in Medicine, Botnar Research Centre (S.G., D.G.A.), and the Health Economics Research Centre, Nuffield Department of Population Health (A.M.G.), University of Oxford, Oxford, the School of Clinical Sciences, University of Bristol, and Bristol Royal Infirmary, Bristol (U.B.), the Department of Cardiac Surgery, Royal Infirmary of Edinburgh, Edinburgh (V.Z.), Royal Papworth Hospital,...
                Article
                DOI: 10.1056/NEJMoa1808783
                PubMed ID: 30699314
                SO-VID: f0af183d-9d5c-462c-8ae5-1859d6cabc7b
                Copyright © © 2019
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                http://www.nejmgroup.org/legal/terms-of-use.htm

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