摘要
目的探讨二尖瓣环舒张早期速度Z值在评估扩张型心肌病(DCM)患儿左心室舒张功能中的应用价值。方法运用组织多普勒成像(TDI)技术测量58例DCM患儿(DCM组)和58例健康儿童(对照组)二尖瓣环舒张早期室间隔速度和侧壁速度(e′),根据体表面积将e′校正为Z值,比较两组间e′的变化情况及Z值评估左心室舒张功能的价值。结果①二尖瓣环舒张早期室间隔速度和侧壁速度(e′)与年龄增长呈正相关(r=0.710,0.622;均P<0.05),DCM患儿二尖瓣环(e′)及其Z值均低于正常儿童,差异有统计学意义(P<0.001);②二尖瓣环e′的Z值评价DCM患儿舒张功能异常的准确性高于原始速度e′。结论儿童二尖瓣环速度e′转换为Z值可克服生长发育的影响,更准确地评估左心室心肌舒张功能。
Objective To evaluate the impact of Z-score of early diastolic velocities using tissue Doppler imaging(TDI) in children with dilated cardiomyopathy(DCM). Methods Fifty-eight children with DCM and 58 healthy children (control group) were selected,tissue Doppler velocities were converted to Z-score on the basis of body-surface-area-adjusted.The Z-score head-to-head with the raw velocities were compared. Results ①Lateral wall e′ velocities and interventricular septal e′ velocities were positively correlated with age(r=0.710,0.622;all P<0.05).Tissue Doppler velocities and Z-score of mitral annular in DCM children were lower than the normal children(P<0.001).②The discriminant capacity was higher for the Z-score than for the e ′ raw velocities,which were assessed by the area under the receiver operating characteristic curves. Conclusions The Z-score of early diastolic velocities are better than the raw velocities in evaluating left ventricular diastolic function in children with dilated cardiomyopathy.
作者
肖丽苗
陈文娟
胡原
Xiao Limiao;Chen Wenjuan;Hu Yuan(Department of Ultrasound,Hunan Children Hospital,Changsha 410007,China)
出处
《中华超声影像学杂志》
CSCD
北大核心
2019年第1期27-30,共4页
Chinese Journal of Ultrasonography
基金
湖南省医药卫生科研计划课题(C2013-033).
关键词
超声心动描记术
扩张型心肌病
儿童
心室舒张功能
左
组织多普勒成像
Echocardiography
Dilated cardiomyopathy
Children
Ventricular diastolic function, left
Tissue Doppler imaging
作者简介
通信作者:陈文娟,Email:chenwjok@126.com.
