与年龄相关的左心室扭转差异：从新生儿到70岁健康志愿者的斑点追踪超声心动图数据

Differences in left ventricular twist related to age: speckle tracking echocardiographic data for healthy volunteers from neonate to age 70 years.

作者信息

Zhang Yi, Zhou Qi-chang, Pu Da-rong, Zou Lin, Tan Yi

机构信息

Department of Ultrasound, the People's Hospital of HuNan province Changsha, China.

出版信息

Echocardiography. 2010 Nov;27(10):1205-10. doi: 10.1111/j.1540-8175.2010.01226.x.

DOI:10.1111/j.1540-8175.2010.01226.x

PMID:20584054

Abstract

OBJECTIVE

To determine normal left ventricular (LV) twist characteristics in different age groups and assess changes between neonates and the elderly.

METHODS

Short-axis left ventricle images at basal and apical levels were acquired in 274 healthy volunteers (aged 15 days to 72 years) by two-dimensional echocardiography, and were analyzed off-line using Speckle tracking echocardiography (STE) software to obtain LV twist measurements. The peak apical rotation (PAr), peak basal rotation (PBr), peak LV twist (Ptw), peak LV twist normalized by LV length (PtwN), peak untwisting velocity (PutwV), and isovolumic untwisting% (Iutw%) were measured.

RESULTS

LV twist values vary with age. Ptw was higher in older volunteers. PtwN varied inconsistently with age. PutwV and Iutw% were lower in the young and old with a peak in mid-age ranges.

CONCLUSIONS

STE is an effective noninvasive method to assess LV twist. Age-related differences in LV twist may reflect maturation and adaptive modulation of LV torsional biomechanics from neonate to the elderly.

摘要

目的

确定不同年龄组正常左心室（LV）扭转特征，并评估新生儿与老年人之间的变化。

方法

通过二维超声心动图对274名健康志愿者（年龄15天至72岁）获取心底和心尖水平的左心室短轴图像，并使用斑点追踪超声心动图（STE）软件进行离线分析，以获得左心室扭转测量值。测量了峰值心尖旋转（PAr）、峰值心底旋转（PBr）、峰值左心室扭转（Ptw）、经左心室长度归一化的峰值左心室扭转（PtwN）、峰值解旋速度（PutwV）和等容解旋百分比（Iutw%）。