A prosthetic heart valve includes a frame having a plurality of strut members, an inflow end, and an outflow end. The prosthetic heart valve further includes a leaflet structure situated at least partially within the frame, and a covering disposed around the frame. The covering has a first ...
However, in the final analysis, what matters are the long-term follow-up results of clinical implantation. Such data, based on over 3000 cases, are available from the Multicentre Valve Trial set up by the Cardiac Surgical Research Club. Details of the more important results from this trial ...
The current standards for accelerated heart valve testing have considerable differences in test conditions. Another problem arises from the fact that such test systems are not standardized at all. It was shown earlier that different test systems generate totally different valve loading, even if operatin...
Useful results, on the same valve specimen, are reported concerning velocity profiles and turbulent shear stress values (TSS). Furthermore valve motion on the Sheffield PD was monitored during the closing phase, and related cinematic data reported. The applied methodologies can provide relevant data ...
A tissue heart valve test device which is capable of testing the valves in a rapid manner before implantation to ensure that there are no unacceptable leaks or flaws. The test device enables the valve to be tested in the operating room d... CS Love,JW Love,JH Calvin - US 被引量: 67...
Positive staining for smooth muscle α-actin, CD31, and proliferating cell nuclear antigen was observed on the luminal side of the detoxified valve leaflets, indicating differentiation and proliferation of the seeded BMCs. These results demonstrate that the treatment of GA-fixed valves with citric ...
transcatheter mitral valve repair determined a 1-month mean between-group difference of 15.9 points in KCCQ overall summary score which was sustained over time.68 In most pharmacological trials, including the more recent trials...
Right-sided heart failure : results from abnormalities on the right side of the heart (right ventricle, tricuspid valve , pulmonic valve) Left- and right-sided HF can occur at the same time → biventricular HF Pathophysiology[1,43] Compensatory mechanisms induced by decreased cardiac output : ...
It is commonly believed that glycerol is absorbed by the tissue valves and hence the leaflets become stiff, making the test results invalid. However, in our laboratory a comparison of tissue valves exposed to glycerine solution at various times does not indicate any difference in the leaflet ...
Because of the high number of cardiomyocytes (approximately 4000 per case), and the reassuring results from the TAC experiment, we omitted manual correction. Compared to cases without aortic valve stenosis, hearts of patients with stenosis had a significant increase in the cardiomyocyte area by 60%...