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      Artéria gastroepiplóica direita na cirurgia de revascularização do miocárdio Translated title: Gastroepiploic artery in coronary artery bypass grafting

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          Abstract

          CASUÍSTICA E MÉTODOS: Entre janeiro de 1996 e julho de 1999, a artéria gastroepiplóica direita (AGED) foi usada como enxerto na revascularização do miocárdio (RM) de 26 pacientes, sendo 25 do sexo masculino, com média de idade de 55,2 anos. Indicamos a operação em pacientes que apresentavam obstruções críticas e/ou totais nas artérias coronárias direita, interventricular anterior e ramos da artéria coronária circunflexa. Angina estável foi diagnosticada em 15 (57,8%) pacientes e angina instável em 10 (38,4%); 1 paciente apresentou isquemia silenciosa. Cinco (19,2%) pacientes foram submetidos à reoperação, sendo em 2 a segunda reoperação. A circulação extracorpórea (CEC) foi usada em 24 pacientes, normotérmica em 18 (75%) e hipotérmica em 6 (25%). Dois, 5 e 19 pacientes apresentavam obstruções em um, dois e três vasos coronários, respectivamente. A AGED foi usada na forma pediculada em 24 pacientes, servindo de enxerto para o ramo interventricular anterior (3), artéria coronária direita (8) e seus ramos descendente (11) e ventricular posteriores (1) e ramo descendente posterior da artéria circunflexa (1). Como enxerto livre, a AGED revascularizou o ramo diagonal em 2 pacientes. Utilizamos, concomitantemente as artérias torácicas internas esquerda e direita, radial esquerda e a veia safena magna para a total RM. RESULTADOS: Angiografia seletiva de controle pós-operatório foi realizada em 12 (46,7%) pacientes. Em 10 (83,4%) visibilizou-se que a AGED estava pérvia, em 1 não foi possível cateterizar o tronco celíaco e no outro o enxerto estava ocluído. Não houve óbito hospitalar/30 dias e todos os pacientes tiveram alta hospitalar assintomáticos. CONCLUSÃO: Concluímos que a AGED, neste estudo, mostrou ser um enxerto seguro para ser utilizado na operação de RM.

          Translated abstract

          MATERIAL AND METHODS: From January 1996 to July 1999, the right gastroepiploic artery (RGA) has been used for coronary artery bypass grafting (CABG) in 26 patients (25 male, average age 55.2 years). The surgery was indicated in patients with occlusion or critical coronary disease in the right coronary artery, in the anterior descending coronary artery and in branches of the circumflex coronary artery. Some 15 (57.8%) patients had stable angina, 10 (38.4%) had unstable angina and one of them had no clinical signs. There were 5 (19.2%) reoperations, 2 of them were second reoperations. CABG was used in 24 patients; normothermic in 18 and hypothermic in six. Two, 5 and 19 patients had coronary artery disease in one, two and three vessels respectively. RGA was used "in situ" in 24 patients and as a graft in 3 to the anterior descending coronary artery, 11 to the right posterior descending coronary artery, 8 to the right coronary artery, 1 to the right posterior ventricular coronary artery and 1 to the descending posterior vessel of the circumflex coronary artery and as a free graft revascularized the coronary diagonal in 2. The left and the right internal thoracic artery, the left radial artery and the saphenous vein graft were used concomitantly. RESULTS: Postoperative angiography was performed in 12 (46.7%) patients, in 10 (83.4%) of them the RGA was patent, in 1 it was impossible to catheterize the celiac trunk, hence the flow could not be evaluated and in the other patient the graft was occluded. There were no deaths and all patients had an excellent outcome. CONCLUSION: The RGA is a safe graft for CABG.

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          Most cited references18

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          Influence of the internal-mammary-artery graft on 10-year survival and other cardiac events.

          We compared patients who received an internal-mammary-artery graft to the anterior descending coronary artery alone or combined with one or more saphenous-vein grafts (n = 2306) with patients who had only saphenous-vein bypass grafts (n = 3625). The 10-year actuarial survival rate among the group receiving the internal-mammary-artery graft, as compared with the group who received the vein grafts (exclusive of hospital deaths), was 93.4 percent versus 88.0 percent (P = 0.05) for those with one-vessel disease; 90.0 percent versus 79.5 percent (P less than 0.0001) for those with two-vessel disease; and 82.6 percent versus 71.0 percent (P less than 0.0001) for those with three-vessel disease. After an adjustment for demographic and clinical differences by Cox multivariate analysis, we found that patients who had only vein grafts had a 1.61 times greater risk of death throughout the 10 years, as compared with those who received an internal-mammary-artery graft. In addition, patients who received only vein grafts had 1.41 times the risk of late myocardial infarction (P less than 0.0001), 1.25 times the risk of hospitalization for cardiac events (P less than 0.0001), 2.00 times the risk of cardiac reoperation (P less than 0.0001), and 1.27 times the risk of all late cardiac events (P less than 0.0001), as compared with patients who received internal-mammary-artery grafts. Internal-mammary-artery grafting for lesions of the anterior descending coronary artery is preferable whenever indicated and technically feasible.
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            Saphenous vein autograft replacement of severe segmental coronary artery occlusion: operative technique.

            R Favaloro (1968)
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              Coronary artery bypass grafting by utilizing in situ right gastroepiploic artery: basic study and clinical application.

              The right gastroepiploic artery (GEA) was studied angiographically and histologically to determine its suitability for coronary artery bypass grafting. One hundred celiac angiograms demonstrated that the right GEA has the appropriate size (diameter less than 1.5 mm, 4%; 1.5 to 2 mm, 29%; more than 2 mm, 67%) and length (less than half of the greater curvature, 5%; more than half of the greater curvature, 95%; more than two-thirds of the greater curvature, 34%) for use as an in situ graft. A stenotic lesion of a GEA was observed in only 1 angiogram. Histological examination of a right GEA from 5 patients who had undergone gastrectomy demonstrated no evidence of arteriosclerosis. Encouraged by these results, we performed a coronary artery bypass reoperation utilizing an in situ right GEA graft in 2 women. Postoperative angiograms showed good patency of those grafts. The patients recovered well and were free from angina.
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                Author and article information

                Journal
                rbccv
                Brazilian Journal of Cardiovascular Surgery
                Braz. J. Cardiovasc. Surg.
                Sociedade Brasileira de Cirurgia Cardiovascular (São Paulo, SP, Brazil )
                0102-7638
                1678-9741
                March 2000
                : 15
                : 1
                : 06-15
                Affiliations
                [01] orgnameHospital Beneficência Portuguesa de São Paulo
                Article
                S0102-76382000000100003 S0102-7638(00)01500103
                5e6b6bbb-6f20-4435-be42-a4e3d7368078

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : September 1999
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 10
                Product

                SciELO Brazil

                Self URI: Texto completo somente em PDF (PT)
                Categories
                Artigos Originais

                Stomach,Estômago,Revascularização miocárdica,Artérias torácicas,Myocardial revascularization,Thoracic arteries

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