Alexander Bernhard

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The standard technique for orthotopic cardiac transplantation implies large atrial anastomoses which do not preserve the anatomical integrity of the donor atria. This may become a potential source of electrophysiological and mechanical atrial dysfunction, especially in the right atrium with the sinus node and the sensitive low-pressure atrioventricular(More)
Systolic and diastolic diameters of the right and left pulmonary arteries (RPAD, LPAD), descending thoracic aorta (DTAD), right ventricular infundibulum (RVID), and pulmonary and aortic valve roots at the proximal, commissural and distal levels were estimated from angiocardiograms in 24 infants, children, and adolescents without heart disease, and(More)
Fresh heart valve allografts were preserved at 4 degrees C for 14 days, cryopreserved and stored for 63 days, and studied for endothelial viability and antigenicity, in order to obtain some information on the immunobiological status of allografts before transplantation. The surgical technique described by Ross for subcoronary position is preferred and(More)
In order to reduce postoperative pulmonary insufficiency (PI) a transannular monocusp patch was implanted in 14 patients with severe tetralogy of Fallot and hypoplastic pulmonary valve ring (group A). The results of left and right heart catheterization, obtained within one year of the correction, were compared to those of 9 patients, who received a simple(More)
Twenty-nine days after implantation of an Abiomed 5000 biventricular support system for otherwise intractable end-stage cardiomyopathy, the inner surfaces of the device were examined by means of scanning electron microscopy (SEM). SEM showed clean surfaces inside the blood sacs, with only rare fibrin deposits. There were platelet adhesions on the(More)
Between 1976-1979, 14 patients with simple transposition of the great arteries (TGA), ranging in age from 1 month to 2 1/2 years, underwent two-stage anatomic correction. Twenty patients underwent a first-stage operation, with three early deaths (15%). After the first-stage operation the peak systolic left ventricular pressure rose from 38 +/- 6 mm Hg to(More)
Twenty-two patients who underwent anatomic correction of transposition of the great arteries at the arterial level at the age of 8 weeks to 14 years were reinvestigated 1-4.6 years (mean 2.0 years) after operation. A Dacron tube was used to bridge the gap between the proximal pulmonary route and the distal pulmonary artery in four patients and a tube made(More)
Between 1976 and 1981, 27 patients with complete transposition of the great arteries, ranging from one month to 2 1/2 years, underwent two-stage anatomic correction and 7 patients first-stage operation only. There were three early deaths after the first-stage and five after the second-stage operation and no late deaths. In seven patients the results of(More)
Between May 1976 and January 1981 a two-stage anatomic correction was performed in 25 patients with simple transposition of the great arteries, ranging in age from 41/2 to 46 1/2 months (mean 14.8). A first-stage operation, consisting of banding of the pulmonary artery to redevelop the left ventricle, including a Blalock-Taussig-anastomosis in 4 patients(More)