In a hospital cardiac care unit, there are three patients with different cardiac conditions: a 52 year old man with dilated cardiomyopathy, an 18 year old girl with mitral valve prolapse, and a 30 year old man with infective endocarditis of the mitral valve. Which of the following features do all these patients most likely share?
Decreased compliance Depressed myocardial contractility Infectious etiology Risk of systemic thromboembolism