The gorlin formula validated against directly observed orifice area in porcine mitral bioprostheses
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چکیده
منابع مشابه
Hydraulic estimation of stenotic orifice area: a correction of the Gorlin formula.
To determine the source of errors in the Gorlin formula for estimating stenotic valvular orifice area, we used a pulsatile flow model that emulated left ventricular and aortic pressures and flow and allowed control of ventricular outflow orifice area. After comparing orifice areas calculated by the Gorlin formula with actual orifice areas, the Gorlin formula constant (k) was found to be highly ...
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Table 1-Effects of lsoproterenol and VIP on Histamine-induced Bronchoconstriction HISTT Subject HISTt HIST HISTt HIST+ISO (28 p.g) HISTt HIST+ISO (375 sg) HISTt HIST+ VIP (375 g) *Mean ± SE (n) from all controlhistamine challenges. tData calculated from Figure 1. First value is response to first histamine challenge and second value is response to second histamine challenge conducted 5 h later, ...
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Aortic valve area can be measured by cardiac catheterization, Doppler echocardiography, or imaging planimetry to assess aortic stenosis severity. These diagnostic techniques provide the Gorlin area, the effective orifice area (EOA) and the geometric orifice area (GOA), respectively. The differences between these three parameters depend mainly on the valve inflow shape and cross-sectional area o...
متن کاملDIAGNOSTIC METHODS VALVUIAR HEART DISEASE Hydraulic estimation of stenotic orifice area: a correction of the Gorlin formula
To determine the source of errors in the Gorlin formula for estimating stenotic valvular orifice area, we used a pulsatile flow model that emulated left ventricular and aortic pressures and flow and allowed control of ventricular outflow orifice area. After comparing orifice areas calculated by the Gorlin formula with actual orifice areas, the Gorlin formula constant (k) was found to be highly ...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1989
ISSN: 0735-1097
DOI: 10.1016/0735-1097(89)90510-x