using new techniques , we quantitated left ventricular myocardial fiber hypertrophy and interstitial tissue in four groups of autopsied hearts free of coronary disease : 1 ) 22 normal hearts , 2 ) 20 hearts from patients with mitral incompetence ( nyha class ii-iii ) who died early after mitral valve replacement from causes other than cardiac failure , 3 ) 22 hearts from patients with mitral incompetence ( nyha class iii-iv ) who died early after mitral valve replacement from cardiac failure with low cardiac output syndrome , and 4 ) 22 hearts from patients with hypertensive heart disease ( nyha class ii-iii ) .
C0018787
hearts
C0026266
mitral