Abstract
Seven patients with spontaneous rupture of mitral chordae tendineae confirmed by operation had a usual clinical profile consisting of a relatively abrupt onset of pulmonary congestion in a late middle-aged man, a systolic murmur, a vigorously pulsating heart, a normal rhythm, and a slight enlargement of the left atrium. Hemodynamic studies confirmed pulmonary congestion due to large pulmonary capillary v waves, and elevation of left ventricular diastolic pressure, although ventricular contractility in terms of total volume ejected was good. Mitral cusps showed atypical mucoid degeneration with no rheumatic or bacterial involvement. A relationship of this condition to others previously associated with mucoid degeneration of the mitral value is suggested. The cause of this syndrome is still unknown.
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