Stenosis: Clinical Measurements
The purpose of this section is to illustrate the clinical application of the pressure-loss coefficient λ in quantifying the severity of stenosis in the heart and great vessels. It is well-known that the presence of a stenosis within a large artery gives rise to a region of turbulent flow downstream of the obstruction (Giddens et al. 1976). When the flow is highly disturbed or turbulent, the pressure loss (pressure gradient) across the stenosis is proportional to the square of the flow velocity V and to the blood density ρ (see Sect. 7.2).
KeywordsPeak Velocity Outflow Tract Mitral Stenosis Ventricular Outflow Tract Left Ventricular Outflow Tract
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