摘要
目的应用超声斑点追踪显像技术(STI)评价缩窄性心包炎(CP)患者左心室局部心肌收缩功能。方法采集26例CP患者左心室心尖位四腔切面、两腔切面、左心室长轴高帧频图像,测量左心室游离壁(前侧壁、下侧壁、前壁、下壁)心内、外膜下心肌各个节段的二维纵向收缩期应变峰值,并与37例正常人比较。结果 (1)CP患者左心室游离壁心外膜下心肌各节段纵向收缩期应变峰值较对照组明显减低(P<0.05),且绝大多数节段P<0.01;(2)CP患者左心室游离壁心内膜下各节段心肌纵向收缩期峰值应变与对照组比较,差异无统计学意义(P>0.05)。结论超声二维应变成像技术能够准确地定量评价CP患者左心室游离壁心内膜下及心外膜下心肌收缩功能,CP患者左心室游离壁心外膜下心肌纵向收缩期峰值应变减低,提示心外膜下心肌收缩功能受损。
Objective To evaluate regional myocardial systolic function of left ventricular in patients with constrictive pericarditis(CP)by two-dimensional speckle-tracking imaging(STI).Methods Study population consisted of 26 patients with CP and 37 normal control subjects.High frame rate two-dimensional images were recorded from the apical four-chamber view,two-chamber view and long-axis view of the left ventricle respectively.The peak systolic longitudinal strain of the left ventricle free wall was measured using 2D strain software,and the indexes were compared between the two groups.Results The epi-strain in patients with CP was significantly decreased,compared with those in the control group(P<0.05).No significant difference in the endo-strain was found between the control group and CP group.Conclusions STI could objectively evaluate the regional myocardial systolic function of left ventricular in patients with CP.The epi-strain in the left ventricle free wall has decreased in patients with CP,which means the epi-myocardial systolic properties of left ventricular are impaired in CP patients.
出处
《中华临床医师杂志（电子版）》
CAS
2011年第13期3732-3736,共5页
Chinese Journal of Clinicians(Electronic Edition)
关键词
心包炎
缩窄性
心室功能
左
应变
斑点追踪
Pericarditis,constrictive
Ventricular systolic function,left
Strain
Speckle-tracking
