AMA Category 1 Credit for Physicians Only.
ASRT CME is not available.
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The abnormality is an interventricular septal (IVS) shift that occurs at the end of diastole. For the IVS to shift during diastole, the RVEDP must exceed the LVEDP. Since the RV and LV, in this loop, appear to have normal ejection fractions, the volume entering the RV during diastole must exceed the volume of blood entering the LV during diastole. RV volume overload from fluid overload or a shunt (ASD) that is increasing the amount of blood in the RV at the end of diastole must be present. Other causes include constrictive pericarditis (from Still's disease), mechanical dyssynchrony from abberent conduction, pulmonary hypertension, left ventricular unloading (IABP), total absence of the pericardium, Valsalva maneuver, and an LVAD,
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A rare case of reversible constrictive pericarditis with severe pericardial thickening in a patient with adult onset Still's disease.
E-Echocardiography RV Dilation
Role of radial strain and displacement imaging to quantify wall motion dyssynchrony in patients with left ventricular mechanical dyssynchrony and chronic right ventricular pressure overload.
[Atrial septal defect associated with mitral valve prolapse--prevalence and clinical significance]
Analysis of ventricular septal motion by doppler tissue imaging in atrial septal defect and normal heart.
Ventricular interdependence during Valsalva maneuver as seen by two-dimensional echocardiography: new insights about an old method.
Does septal position affect right ventricular function during left ventricular assist in an experimental porcine model?