Surgical procedures to revascularize the heart

The Puzzle of Positive Results — Myocardial Revascularization

“…3 Partial ligation protected dogs against subsequent occlusion of their coronary arteries. 2,3 The exact physiological mechanism was never clear. Beck speculated that venous congestion allowed the myocardium to extract more oxygen or minimized the oxygen differentials that produced fibrillating currents.…”

“…4 World War II put Beck's research on hold, but afterward he returned to myocardial revascularization and by 1955 had developed two distinct operations. 2 One involved placing a bypass graft between the aorta and the coronary sinus, arterializing the vein, and then partially ligating the distal sinus. Despite good laboratory results, Beck abandoned this procedure because of unacceptable mortality (>25%) among patients.…”

“…Montreal cardiac surgeon Arthur Vineberg dismissed skeptics who feared that artery implants would simply produce intramyocardial hematomas (1957b). 2 Early advocates of balloon angioplasty weren't sure whether the procedure compressed plaques, stretched vessels, or triggered a "self-healing process" (1979). Even now, Verheye et al admit that the precise mechanism of action of coronary-sinus reduction "remains unclear.…”

After a Cardiomyoplasty, Collaterals from Skeletal Muscle Form to Chronic Ischemic Myocardium

“…Before interest in the Vineberg procedure waned, however, an extensive laboratory investigation of the concept of indirect myocardial revascularization was undertaken (3)(4)(5)(6)(7)(8)(9). Considerable anatomic evi-dence demonstrated that significant collateral vessels formed between extramyocardial tissues and the heart.…”

Η Πληρης Επαναιματωση Του Μυοκαρδιου Με Αορτοστεφανιαια Παρακαμπτηρια Μοσχευματα Στην Αντιμετωπιση Της Στεφανιαιας Νοσου

“…Οι προσπάθειες επαναιμάτωσης του μυοκαρδίου συνε χίστηκαν με την τοποθέτηση στο επικάρδιο μισχωτών τμημά των μυός, περικαρδιακόυ λίτιους, δέρματος, ακόμη και του σπλήνα (271).…”