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Revista chilena de cardiología

On-line version ISSN 0718-8560


SEGUEL, Enrique et al. Myocardial revascularization using both mammary arteries "in Y": short term results. Rev Chil Cardiol [online]. 2015, vol.34, n.3, pp.182-189. ISSN 0718-8560.

Myocardial revascularization with both mammary arteries in "Y" (Y-BIMA) might lead to longer graft duration and better clinical results. Aim: To analyze short term results of Y-BIMA in a series of patients operated on at a Chilean university hospital. Methods: Patients operated on using Y-BI-MA between December 2010 and May 2014 were analyzed. There were 67 patients (59 males) aged 58.6± 2.3 years old. Five patients had 2 vessel di-sease and 62 patients 3 vessel disease. The additi-ve Euroscore was 2.3 % and the logistic score was 2.18%. All operations were performed through a medial sternotomy using extracorporeal circulation. Both mammary arteries were dissected and skeleto-nized. The RIMA was divided and anastomosed to the LIMA. The anterior myocardial was revascularized through the LIMA while the lateral and inferior walls were revascularized through the RIMA. Results: An average 3.8 anastomosis per patient were performed: 67 LIMA to the LAD, 37 to the diagonal artery, and 5 to other targets (total 109 LIMA); RIMA was used in 145 arteries: 64 to a first marginal, 23 to a second marginal and 58 to a posterior descending artery. Revascularization was complete in all cases. One patient had a postoperative myocardial infarction, 6 developed atrial fibrillation, 1 a pneumonia, 1 a sternal dehiscence and 5 had superficial infections. There was no surgical mortality nor reoperations for bleeding. Patients were followed an average of 39.2±12.1 months. Four patients died and 2 were reoperated on during follow up.

Keywords : coronary surgery; coronary artery bypass grafting; double mammary; BIMA; short terms results.

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