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Author

Yasuhiko Wanibuchi

Other affiliations: Osaka Medical College
Bio: Yasuhiko Wanibuchi is an academic researcher from Memorial Hospital of South Bend. The author has contributed to research in topics: Gastroepiploic Artery & Internal thoracic artery. The author has an hindex of 15, co-authored 74 publications receiving 816 citations. Previous affiliations of Yasuhiko Wanibuchi include Osaka Medical College.


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Journal ArticleDOI
TL;DR: The gastroepiploic artery is a suitable conduit for coronary artery bypass grafting in terms of low surgical risk, high patency rate, and excellent patient outcome.

200 citations

Journal ArticleDOI
TL;DR: The right gastroepoploic artery has been used for coronary artery bypass grafting (CABG) in 400 patients of a total of 1359 undergoing the same procedure during an 8-year period and is a safe and effective arterial conduit for CABG.
Abstract: The right gastroepoploic artery (GEA) has been used for coronary artery bypass grafting (CABG) in 400 patients of a total of 1359 undergoing the same procedure during an 8-year period. There were 327 males and 73 females with a mean age of 59 years. Single-, double- and triple-vessel and left main disease were noted in 4, 51, 283 and 62 patients, respectively. Previous myocardial infarction was noted in 208 patients and 40 patients had undergone previous CABG. Internal thoracic artery (ITA) and inferior epigastric artery grafts were concomitantly used in 388 (97%) and 30 (8%) patients, respectively. The mean number of grafts was 3.2 including vein grafts, and 2.3 coronary arteries were bypassed with arterial grafts. The sites of GEA grafting were 43 anterior descending, 6 diagonal, 71 circumflex, and 287 right coronary arteries with 376 in situ and 24 free grafts including 7 sequential grafts. There were eight (2%) early and five (1.3%) late deaths. New Q waves were noted in six (1.5%) patients. Warm body circulation is thought to be favorable with a lower incidence of the need for intra-aortic balloon pump (0.6% vs 6.0%). Postoperative angiography revealed 94% (253/268) early (2 months) and 94% (47/50) late (2-5 years) patency of GEA grafts. In conclusion. GEA is a safe and effective arterial conduit for CABG.

48 citations

Journal ArticleDOI
TL;DR: GEA is a suitable conduit and good long term patency similar to ITA grafting can be expected in coronary artery bypass grafting.
Abstract: Ninety-two gastroepiploic artery (GEA) and 322 internal thoracic artery (ITA) grafts which underwent postoperative angiography (0.5-24 postoperative months, mean 2.0 months) were compared. The sites of GEA anastomosis were 5 left anterior descending, 3 diagonal, 16 circumflex and 68 right coronary arteries and for ITA grafts, 241 left anterior descending, 40 diagonal, 36 circumflex and 5 right coronary arteries. Patency rates were 96% (88/92) of GEA and 98% (314/322) of ITA, respectively. No focal stenosis in the graft trunk was found in both GEA and ITA except occasional spasm in GEA. Six (6%) GEAs were opacified via the superior mesenteric artery. Mean diameter of grafts just proximal to the anastomosis measured by angiogram was 2.3 mm in GEA and 1.9 mm in ITA (P less than 0.01). Free flow after intraluminal papaverine injection was 90.6 ml/min (50-300 ml/min) in 48 GEAs and 81.3 ml/min (50-150 ml/min) in 98 ITAs. Histology showed normal to mild intimal sclerotic changes in 58 of 63 (92%) GEAs and in 94 of 95 (99%) ITAs. From these results, we concluded that GEA is a suitable conduit and good long term patency similar to ITA grafting can be expected in coronary artery bypass grafting.

44 citations

Journal ArticleDOI
TL;DR: The results suggest that the bioprostheses in the tricuspid position yield significantly better long-term results than those in the mitral position after simultaneous MVR and TVSI.

38 citations

Journal Article
TL;DR: Using this implantable Doppler miniprobe, postoperative function in the individual coronary bypass graft under various conditions was effectively investigated.
Abstract: Background. The present study was designed to investigate physiological and pharmacological responses of the arterial graft flow measured by the directly implanted ultrasonic pulsed Doppler miniprobe after coronary artery bypass grafting (CABG). Methods and Results. Our original 5-MHz, 5-mm-diameter, Doppler mini-flow probe catheter, which has four silicone brims in front to facilitate its fixation onto the graft without direct suture, was attached onto internal thoracic artery (ITA) and gastroepiploic artery (GEA) grafts during CABG in 10 patients

36 citations


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TL;DR: A multicenter study to determine the incidence and predictors of — and the use of resources associated with — perioperative adverse neurologic events, including cerebral injury, found patients with adverse cerebral outcomes had higher in-hospital mortality.
Abstract: Background Acute changes in cerebral function after elective coronary bypass surgery are a difficult clinical problem. We carried out a multicenter study to determine the incidence and predictors of — and the use of resources associated with — perioperative adverse neurologic events, including cerebral injury. Methods In a prospective study, we evaluated 2108 patients from 24 U.S. institutions for two general categories of neurologic outcome: type I (focal injury, or stupor or coma at discharge) and type II (deterioration in intellectual function, memory deficit, or seizures). Results Adverse cerebral outcomes occurred in 129 patients (6.1 percent). A total of 3.1 percent had type I neurologic outcomes (8 died of cerebral injury, 55 had nonfatal strokes, 2 had transient ischemic attacks, and 1 had stupor), and 3.0 percent had type II outcomes (55 had deterioration of intellectual function and 8 had seizures). Patients with adverse cerebral outcomes had higher in-hospital mortality (21 percent of patients ...

1,728 citations