title: Coronary artery bypass grafting by utilizing the internal mammary artery graft in 100 Japanese patients.
abstract: The internal mammary artery (IMA) grafting for myocardial revascularization was performed in 100 Japanese patients during a three-year period. There were 86 males and 14 females with the mean age of 58 +/- 9 (37 approximately 75 year-old). Unilateral IMA was used in 88 patients and bilateral IMA was used in 12 patients. Sequential IMA grafting was performed in 5 patients. The sites of IMA grafting were 91 left anterior descending arteries (LAD), 16 diagonal branches, 8 circumflex arteries and 2 right coronary arteries. Saphenous vein or gastroepiploic artery was concomitantly used to bypass the other coronary arteries in 90 patients. The number of distal anastomosis ranged from 1 to 6 and the mean was 2.8 per patient. Two patients died within 30 days and one patient died at 3 months after surgery. Perioperative myocardial infarction was noted in 3 patients. Symptomatic relief was obtained in 94 (97%) of 97 survivors. The patency of the IMA graft at mean 2.2 postoperative months was 97% (58/60) in LAD, 100% (14/14) in the diagonal branch, 100% (5/5) in the circumflex artery, 100% (1/1) in the right coronary artery, and 98% (78/80) in over-all grafted coronary arteries. Pre- and postoperative exercise thallium scintigraphy in 13 patients, who received the IMA graft to severely stenosed LAD, showed significant improvement of the washout ratio (from 33.1 +/- 16.9% to 47.4 +/- 14.8%) which was nearly equivalent to that of the saphenous vein graft to LAD (from 24.8 +/- 6.2% to 48.1 +/- 6.6%, n = 7).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Thoracic Surgery, Osaka Medical College, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Suma
authors.forename: K
authors.initials: K
authors.lastname: Kondo
authors.forename: M
authors.initials: M
authors.lastname: Maeda
authors.forename: H
authors.initials: H
authors.lastname: Fukumoto
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: H
authors.initials: H
authors.lastname: Sato
authors.forename: A
authors.initials: A
authors.lastname: Takeuchi
authors.forename: J
authors.initials: J
authors.lastname: Kusukawa
authors.forename: Y
authors.initials: Y
authors.lastname: Hirota
mesh_terms: D000328:Adult; D000368:Aged; D003326:Coronary Circulation; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D005069:Evaluation Studies as Topic; D015444:Exercise; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging; D006801:Humans; D007387:Internal Mammary-Coronary Artery Anastomosis; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012501:Saphenous Vein / Q000637:transplantation; D013794:Thallium Radioisotopes; D014654:Vascular Patency
chemical_list: D013794:Thallium Radioisotopes