Cardiac Power to Mass Assessment by MRI in Patients with Hypertrophic Cardiomyopathy and Normal Ejection Fraction

Cardiac power (CP) output in patients with heart failure has been studied, while its importance in hypertrophic cardiomyopathy (HCM) patients is yet unclear. 99 HCM patients and 65 gender- and age-matched controls with cardiac MR were included in the study. HCM patients showed significantly higher CP (p=0.031) but lowered NCP (p<0.001) than the controls. The correlation analysis of NCP and functional parameters revealed that NCP was inversely correlated with LV mass (R=-0.395, p<0.001) in HCM patients. NCP decreased significantly in HCM patients and may continue to deteriorate with increasing LV mass.