Compare and analysis about hypertrophic cardiomyopathy and hypertensive left ventricular hypertrophy with strain rate imaging / 中华超声影像学杂志

ABSTRACT

Objective To analyze strain characteristics of hypertrophic cardiomyopathy(HCM) and explore the clinical value of strain rate imaging in differentiating HCM from hypertensive left ventricular hypertrophy(H-LVH). Methods Parameters of strain and strain rate were obtained and compared among 23 HCM patients, 30 patients with H-LVH and 20 healthy people(control group). Results In HCM group, systolic strain(?_ sys ),peak systolic strain rate(SR_ sys ), early diastolic strain rate(SR_ dia ) obtained from inter-ventricle septum(IVS) were smaller than that obtained from left ventricle posterior wall(LVPW), while SR_a increased in IVS. ?_ sys ,SR_ sys ,SR_ dia in both patients with HCM and H-LVH were smaller than that in control group, while atrial systolic strain rate(SR_a) increased in HCM group and H-LVH group. ?_ sys , SR_ sys , SR_ dia , SR_a obtained from IVS and ?_ sys , SR_ dia obtained from LVPW in HCM group showed statistic differences compared with H-LVH group. Conclusions Strain rate imaging could accurately detect the abnormal regional myocardial function of HCM and can be applied as a useful tool in discriminating HCM from H-LVH.