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Table 116-3

Noninvasive Features that Help Differentiate Constrictive Pericarditis from Restrictive Cardiomyopathy

Constrictive PericarditisRestrictive Cardiomyopathy
Physical examination
Kussmaul signPresentMay be present
Pericardial knockMay be presentAbsent
Chest X-ray
Pericardial calcificationMay be presentAbsent
Echocardiography
Thickened pericardiumPresentAbsent
Thickened myocardiumAbsentOften present
Exaggerated variation in transvalvular velocitiesPresentAbsent
CT or MRI
Thickened pericardiumPresentAbsent