Left Ventricular Function and Hypertrophy in Cardiomyopathy with Depressed Ejection Fraction

Left ventricular (LV) function and hypertrophy, assessed during cardiac catheterization by quantitative biplane angiocardiography, were related to postcatheterization course in 36 patients found to have cardiomyopathy with depressed ejection fraction (EF). EF ranged from 0.09 to 0.41, LV mass (M) from 99 to 317 g/m2, LV end-diastolic volume (V) from 104 to 347 ml/m2, and ratio of M/V from 0.66 to 1.63. In this study, EF was used as an index of LV function; M/V ratio was considered to represent a relative degree of LV hypertrophy. Postcatheterization survival rates (PCSR) for all patients at 12, 24, and 36 months were 68.8 ± 7.8%, 49.9 ± 9.2%, and 32.8 ± 10.2%. The 36-month PCSR was significantly higher for patients (N = 15) with EF ≥ 0.20 (75.1 ± 14.5%) than for those (N = 21) with EF < 0.20 (0%) (P < 0.01). The 36-month PCSR was also significantly higher for patients (N = 19) with M/V ratio ≥ 0.90 (53.6 ± 14.8%) than for those (N = 17) with M/V ratio < 0.90 (12.4 ± 10.4%) (P < 0.05). M/V ratio appeared t...