Characteristics of mitral and tricuspid annular velocities determined by pulsed wave Doppler tissue imaging in healthy subjects
Characteristics of mitral and tricuspid annular velocities determined by pulsed wave Doppler tissue imaging in healthy subjects
复制标题
DOI：
10.1053/je.1999.v12.a99246
复制
发表时间：
1999-08-01
影响因子：
6.5
通讯作者：
Nordlander, R
中科院分区：
文献类型：
--
作者：
Alam, M;Wardell, J;Nordlander, R
多普勒组织成像技术评价心肌运动速度的重要性日益增加。然而，普遍接受的参考值仍然缺失。在这项研究中，我们检查了连续62名健康受试者（平均年龄46岁，范围22-82岁）的脉冲波多普勒组织成像的特点收缩和舒张期的速度分布的左，右心室。受试者被分为3个不同的年龄组：组I，小于40岁;组II，40至59岁;组III，60岁及以上。在心尖四腔和二腔视图中，使用二尖瓣环的4个部位（间隔前、外侧和下方）和三尖瓣环的1个部位沿长轴沿着进行记录。收缩期二尖瓣环速度（10.3 +/- 1.4 cm/s）与M型超声心动图二尖瓣环位移确定的整体左心室功能密切相关（r = 0.70，P <0.001）。III组收缩期血流速度明显低于I组（9.6 vs 10.8 cm/s，P <0.01）。收缩期血流速度与受试者年龄之间存在相对较弱但显著的相关性（r =-0.43，P <0.001）。与I组相比，III组的二尖瓣环舒张早期速度也较低（11.3 vs 17.7 cm/s，P <0.001），与年龄（r =-0.81，P <0.001）和其他常规多普勒舒张参数密切相关。室间隔处的二尖瓣环收缩期和舒张早期运动速度均低于左室其他部位。三尖瓣环收缩期流速（15.2 +/- 1.9 cm/s）高于二尖瓣环收缩期流速（P <0.001）。与二尖瓣环速度不同，收缩期三尖瓣环速度与年龄无关。然而，舒张期三尖瓣环速度与经二尖瓣多普勒舒张参数相关良好。记录瓣环速度的方法对所有受试者都是可行的，方法简单，重复性好。
Assessment of myocardial velocities by Doppler tissue imaging is gaining in importance. However, generally accepted reference values are still missing. In this study we examined 62 consecutive healthy subjects (mean age 46, range 22-82 years) by pulsed wave Doppler tissue imaging to characterize the systolic and diastolic velocity profiles of the left and right ventricles. The subjects were divided into 3 different age-groups: group I, younger than 40 years; group II, 40 to 59 years; and group III, 60 years and older. Recordings were made along the long axis in the apical 4- and 2-chamber views by using 4 sites (septal anterior, lateral, and inferior) at the mitral annulus and 1 site at the tricuspid annulus. Systolic mitral annular velocity (10.3 +/- 1.4 cm/s) correlated strongly with global left ventricular function determined by M-mode echocardiographic mitral annular displacement (r = 0.70, P < .001). The systolic velocity was significantly lower in group III than in group I (9.6 vs 10.8 cm/s, P < .01). A relatively weak, but significant, correlation was found between systolic velocity and the age of the subjects (r = -0.43, P < .001). Mitral annular early diastolic velocity was also lower in group III compared with group I (11.3 vs 17.7 cm/s, P < .001), with a strong correlation with age (r = -0.81, P < .001) and other conventional Doppler diastolic parameters. Both the systolic and early diastolic mitral annular velocities at the septum were lower than at other left ventricular sites. Tricuspid annular systolic velocity (15.2 +/- 1.9 cm/s) was higher than mitral annular systolic velocity (P < .001). Unlike mitral annular velocity, systolic tricuspid annular velocity was not correlated with age. However, the diastolic tricuspid annular velocities correlated well with transtricuspid Doppler diastolic parameters. The method of recording the annular velocities was feasible in all subjects, simple and highly reproducible.