Presentation on theme: "Mohammed Almansori MBBS, FRCPC Assistant Professor of Medicine & Interventional Cardiologist University of Dammam ECHO CLUB INVASIVE HEMODYNAMIC EVALUATION."— Presentation transcript:
Mohammed Almansori MBBS, FRCPC Assistant Professor of Medicine & Interventional Cardiologist University of Dammam ECHO CLUB INVASIVE HEMODYNAMIC EVALUATION OF REGURGITATION
In every patient in whom it was considered that a decision could be reached by echocardiography alone (>80% of pts) there was 100% agreement from cardiac catheterization. So, in patients with adequate echo data Cath can be omitted. If echo indices are conflicting or significant CAD is suspected catheterization should be considered
Indication of invasive hemodynamic evaluation: 1.When pulmonary pressure is disproportionate to the severity of regurgitation assessed noninvasively. 2.When there is a discrepancy between clinical and noninvasive findings.
Reg stroke volume = Angio stroke volume – Forward stroke volume Rough estimation of RF compared to visual interpretation: 1+ Reg is equivalent to RF of 20% 2+ Reg is equivalent to RF of 20-40% 3+ Reg is equivalent to RF of 40-60 4+ Reg is equivalent to RF of > 60%
A small diastolic pressure gradient may be observed across the mitral valve; however, unlike mitral stenosis, the gradient is present during early diastole only. In addition, the slope of the y descent in mitral regurgitation is steep rather than delayed, as seen in mitral stenosis.
The transmission of this pressure wave from the pulmonary veins to the pulmonary artery also explains the occasional phenomenon of a false elevation in the pulmonary artery saturation, in some cases of severe mitral regurgitation.
A 71-year-old man know to have moderate AR presented with a month of CCS-III angina and shortness of breath. No other medical illnesses. O/E HR 63BP 164/53 JVP 9 cm H2O Early diastolic murmur of AR + Pansystolic murmur of MR + S3 Occasional crepitation on chest auscultation No LL edema CXR cardiomegaly, No pulmonary edema