Zobrazeno 1 - 10
of 37
pro vyhledávání: '"D R Boughner"'
Publikováno v:
Journal of Biomedical Materials Research. 63:854-861
Although bioprosthetic heart valves offer the benefits of a natural opening and closing, better hemodynamics, and avoidance of life-long anticoagulant therapy, they nevertheless tend to fail in 10-15 years from tears and calcification. Several author
Publikováno v:
Journal of Applied Physiology. 77:1935-1940
Our purpose was to examine the gas exchange response to exercise in heart transplant (HT) patients and to characterize the O2 uptake kinetics (tau VO2) during successive square-wave on-transients from loadless cycling to moderate exercise. We hypothe
Publikováno v:
ASAIO Journal. 40:206-212
Pulmonary autografts have shown a low incidence of early failure and late structural deterioration when placed in the aortic position yet the potential value of the pulmonary valve as a replacement device has not been widely considered. Since the mec
Publikováno v:
British Journal of Anaesthesia. 67:58-63
Electrocardiographic (ECG) changes are reported frequently after subarachnoid haemorrhage (SAH). The aim of this study was to investigate the functional significance of ECG changes by echocardiographic assessment of cardiac function. Forty-five patie
Publikováno v:
Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology. 10(2)
Although accurate detection of cardiac muscle damage is critical in the diagnosis of acute myocarditis or acute cellular rejection in both clinical and experimental settings, the histologic evaluation is frequently uncertain without specialized stain
Publikováno v:
The Journal of heart valve disease. 9(6)
Glutaraldehyde-fixed bovine pericardial tissue used in the construction of valvular bioprostheses undergoes repeated bending stress during the cardiac cycle. To bend smoothly, internal tissue shearing is required. The effect of glutaraldehyde fixatio
Publikováno v:
The Canadian journal of cardiology. 16(7)
To review the development of intracoronary ultrasound, its current utility and the impetus for its continued development as a coronary imaging modality.English-language literature (1966 to 1999) was searched in the MEDLINE database with the key words
Publikováno v:
The Journal of heart valve disease. 9(1)
Normal valves are known to be metabolically active, yet the route of oxygen delivery is unclear. Although diffusion from the valve surface is the presumed source, the presence, distribution and importance of the aortic valve's vascular bed is unclear
Publikováno v:
Texas Heart Institute journal. 25(2)
"Spongy left ventricular myocardium," or noncompaction of left ventricular myocardium, is a rare disorder of endomyocardial morphogenesis. It is usually seen in the pediatric population and is often associated with other congenital cardiac malformati
Autor:
E A, Talman, D R, Boughner
Publikováno v:
The Journal of heart valve disease. 5(2)
Several types of stress act on aortic heart valve tissue during the cardiac cycle. When closed the valve is subjected to primarily tensile stress due to the diastolic pressure, and upon opening bending stress occurs near the attachment with the aorti