"Stiff heart" syndrome. An uncommon cause of heart failure.
D000686:Amyloidosis / Q000150:complications*; D006328:Cardiac Catheterization; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008875:Middle Aged