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4 tulemused
Fatigue analysis of clinical bioprosthetic heart valves manufactured using photooxidized bovine pericardium.
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Logi sisse
OBJECTIVE
Recent reports have given details of early clinical failures of bioprosthetic heart valves manufactured using dye-mediated photooxidized bovine pericardium. These failures were attributed to abrasion of the inflow surface of the leaflets against the cloth-covered inner face of the outer
Evaluation of tilting disc valves after fatigue life testing: preliminary results within a comparison program.
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Logi sisse
A fatigue life test, by accelerating the beat rate, simulates several years of virtual life of a prosthetic heart valve in a short period of time. The correlation between the in vivo life of a valve and in vitro testing expectations is as yet not well established, but reproducible test conditions
New evolution in mitral physiology and surgery: mitral stentless pericardial valve.
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Logi sisse
The human adult mitral valve, with a mean diastolic area of up to 7.6 cm2, excess leaflet surface area for coaptation in systole, mitral annulus-papillary muscle continuity, and systolic constriction of the posterior left ventricular wall around the mitral annulus functions in concert with other
Kinematics of synthetic flexible leaflet heart valves during accelerated testing.
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Logi sisse
OBJECTIVE
The study aim was to examine the effect of variation of test frequencies on the duration and kinematics of valve leaflets during opening, and at the fully open position.
METHODS
Trileaflet polyurethane heart valves were tested in a Rowan Ash fatigue accelerator at 5, 10 and 15 Hz. Images
Kõige täiuslikum ravimtaimede andmebaas, mida toetab teadus
- Töötab 55 keeles
- Taimsed ravimid, mida toetab teadus
- Maitsetaimede äratundmine pildi järgi
- Interaktiivne GPS-kaart - märgistage ürdid asukohas (varsti)
- Lugege oma otsinguga seotud teaduspublikatsioone
- Otsige ravimtaimi nende mõju järgi
- Korraldage oma huvisid ja hoidke end kursis uudisteuuringute, kliiniliste uuringute ja patentidega
Sisestage sümptom või haigus ja lugege ravimtaimede kohta, mis võivad aidata, tippige ürdi ja vaadake haigusi ja sümptomeid, mille vastu seda kasutatakse.
* Kogu teave põhineb avaldatud teaduslikel uuringutel
