title: The efficacy and safety of additional bypass graft during isolated coronary artery bypass grafting.
abstract: In 19 patients with an undesirable hemodynamic condition (n=15) or with regional asynergy and coexistent ST-T change (n=4) during isolated coronary artery bypass grafting (CABG) surgery, one (n=17) or two (n=3) additional saphenous vein grafts were placed onto left anterior descending (LAD) (n=16), right (n=4), and left circumflex (LCx) (n=2) coronary arteries. Diagnosis of the cause of the suboptimal condition was insufficient graft flow in 16 patients, and spasm of the ungrafted coronary artery in 3. Additional myocardial ischemic time was 17 9 minutes, and the graft flow was 59 25 ml/min. Additional bypass was effective in 94.5%. Eighteen patients could be weaned from cardiopulmonary bypass, and 17 (89.5%) survived and were discharged from hospital. Median duration of mechanical ventilatory support and intensive care unit stay was 15 hours and 4 days, respectively. During 63 44 months follow-up, the additional graft was occluded and the treadmill test was positive for ischemia in 2 patients, and one child patient is now considered for redo CABG. Placement of additional bypass grafts thus appeared to be an effective and relatively safe strategy, although the decision has to be made cautiously.
authors.affiliation: Department of Cardiovascular Surgery, Saitama Medical school, Moroyama-machi, Iruma-gun, Japan.
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Imanaka
authors.forename: Shunei
authors.initials: S
authors.lastname: Kyo
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ishikawa
authors.forename: Uki
authors.initials: U
authors.lastname: Kobayashi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Yokote
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Asano
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Tanabe
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ohuchi
authors.forename: Masanori
authors.initials: M
authors.lastname: Ogiwara
authors.forename: Masaaki
authors.initials: M
authors.lastname: Kato
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001158:Arteries / Q000637:transplantation; D002315:Cardiopulmonary Bypass / Q000401:mortality; D002648:Child; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000401:mortality; D003331:Coronary Vessels / Q000637:transplantation; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular / Q000209:etiology / Q000601:surgery; D006439:Hemodynamics / Q000502:physiology; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D012086:Reoperation / Q000401:mortality; D012449:Safety; D016019:Survival Analysis; D013997:Time Factors; D016896:Treatment Outcome