Comparison of left ventricular energy loss between patients with hypertrophic cardiomyopathy and hypertensive left ventricular hypertrophy
10.3760/cma.j.issn.1004‐4477.2019.10.002
- VernacularTitle:血流向量显像技术鉴别肥厚型心肌病与高血压性左心室肥厚的应用价值
- Author:
Yang LIU
1
;
Pulati ZIBIRE
;
Mengruo ZHU
;
Haiyan CHEN
;
Cuizhen PAN
;
Xianhong SHU
Author Information
1. 上海市医学影像研究所上海市心血管病研究所复旦大学附属中山医院心脏超声科 200032
- Keywords:
Echocardiography;
Ventricular function,left;
Energy loss;
Hypertrophic cardiomyopathy;
Hypertension
- From:
Chinese Journal of Ultrasonography
2019;28(10):837-841
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate left ventricular energy loss ( EL ) in patients with hypertrophic cardiomyopathy ( HCM ) and hypertensive left ventricular hypertrophy ( H‐LV H ) using vector flow map ( VFM ) . Methods T wenty‐five HCM patients ,21 H‐LV H patients and 36 healthy subjects were selected as HCM group ,H‐LV H group and control group respectively in Zhongshan Hospital Fudan University . Color Doppler imaging of long‐axis view loops were recorded for VFM analysis . According to the opening and closing of the aortic valve and mitral valve ,isovolumic contraction ( IVC) ,isovolumic relaxation ( IVR) , ejection period ( EP) and filling period ( FP) were determined . T he total left ventricular EL ( T‐EL ) ,IVC‐EL ,IVR‐EL ,EP‐EL and FP‐EL as well as peak EL during EP and FP were quantified . T he measurement results were taken as the average of three cardiac cycles . Results ①Compared to the control group ,FP‐PEL was decreased in both patient groups ,and HCM group was the lowest ( P ＜0 .05 ) . Compared to the control group ,EP‐EL and EP‐PEL were increased ,while FP‐EL was decreased in HCM group ( all P ＜0 .05) ; IVC‐EL ,EP‐PEL ,and EP‐EL were increased in H‐LV H group ( all P ＜0 .05 ) . ②Compared with HCM group ,the IVC‐EL ,FP‐PEL ,IVR‐EL and FP‐EL of H‐LV H were higher( all P ＜0 .05) . ③The ROC analysis of five parameters with statistical difference between HCM group and H‐LV H group showed that FP‐EL and IVC‐EL were more effective in the differential diagnosis of HCM and H‐LVH . Conclusions Patients with cardiac hypertrophy and normal LVEF have increased systolic EL and reduced diastolic EL . H‐LV H patients have more energy loss than HCM patients .EL might be a sensitive and valuable parameter to distinguish cardiac hypertrophy of different etiologies .
