To differentiate restrictive cardiomypathy and constrictive pericarditis, features ouring constrictive pericarditis are-
Ref: Harrison's 19th E pg 1573 Table 288-2. Thickened pericardium seen in constrictive pericarditis. Because constrictive pericarditis can be corrected surgically, it is impoant to distinguish chronic constrictive pericarditis from restrictive cardiomyopathy, which has a similar physiologic abnormality (i.e., restriction of ventricular filling).
Diastolic pressures are not equalised
There is mild pericardial effusion
Associated with septal hyperophy
Thick pericardium is present
C.V.S