Cannot Use (Limitations of echocardiographic parameters)

Mitral E/DT/A	More than mild MS More than mild MR Hypertrophic cardiomyopathy
Propogation Velocity (Vp)	LVH (falsely fast) Small LV cavity May be normal in restrictive cardiomyopathy Normal EF
E/A	Normal EF Mitral stenosis Prosthetic valves
e'	MAC Prosthesis/surgical rings Mitral stenosis Constrictive pericarditis Regional wall motion abnormalities
Hepatic Vein Flow	TS Transplant patient High degree AV block Pericardial compression syndromes
Dp/dt	Severe MR
Mahan’s Equation (for pulmonary hypertension)	HR must be 60-100bpm
2 chamber view (TTE)	VC measurements in MR (parallel to line of co-aptation, shows wide VC even in mild MR)