Mitral valve area determination during minor changes in hemodynamic state: Superiority of the continuity equation
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چکیده
منابع مشابه
Hemodynamic state early after prosthetic replacement of mitral valve.
PATIENTS undergoing replacement of the mitral valve appear to have somewhat less satisfactory early and late results than do those undergoing replacement of the aortic valve, in our experience." 2 Therefore studies were made of the hemodynamic state preoperatively and early postoperatively in patients in whom the Starr-Edwards prosthesis was inserted into the mitral region. The data indicate th...
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Mitral valve area during exercise after restrictive mitral valve annuloplasty: importance of diastolic anterior leaflet tethering.
BACKGROUND Restrictive mitral valve annuloplasty (RMA) for secondary mitral regurgitation might cause functional mitral stenosis, yet its clinical impact and underlying pathophysiological mechanisms remain debated. OBJECTIVES The purpose of our study was to assess the hemodynamic and clinical impact of effective orifice area (EOA) after RMA and its relationship with diastolic anterior leaflet...
متن کاملContinuity equation-derived valve area using CMR phase-contrast provides flow-independent assessment of valve stenosis
Background Assessing aortic valve stenosis (AVS) by cardiac magnetic resonance (CMR) remains challenging, largely due to effects of accelerated flow and resulting pressure recovery, or the phenomena of kinetic energy transmuting to static fluid pressure distally. Effective orifice area (EOA) is a technique used in echocardiography and has been shown to improve AVS assessment. The potential of p...
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The ability of the echocardiogram to define mitral valve opening and closure was assessed by simultaneously recording the echocardiogram of the anterior leaflet (ECHO) with intracardiac pressures, aortic second sound, and ECG on 38 occasions in 14 patients undergoing cardiac catheterization. Hemodynamic opening and closure were defined by intersection of the pulmonary wedge and left ventricular...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1991
ISSN: 0735-1097
DOI: 10.1016/0735-1097(91)91585-3