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首页> 外文期刊>European heart journal cardiovascular Imaging >Dynamics of the tricuspid valve annulus in normal and dilated right hearts: A three-dimensional transoesophageal echocardiography study
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Dynamics of the tricuspid valve annulus in normal and dilated right hearts: A three-dimensional transoesophageal echocardiography study

机译：正常和扩张的右心三尖瓣环的动力学：三维经食管超声心动图研究

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Background The tricuspid valve annulus (TVA) is a complex three-dimensional structure that is incompletely understood. Threedimensional transoesophageal echo (TOE) provides us with the opportunity to examine this structure in detail. Methods and results Fifty patients were included, divided into two groups: controls (n = 20), and dilated right hearts (DRH, n = 30). Three-dimensional zoom images of the TVA were acquired using an iE33 machine and X7-2t transducer. Antero-posterior (AP) diameter, septo-lateral (SL) diameter, area, circumference, and height were measured at 6 points of the cardiac cycle adapting commercially available software designed for assessing the mitral valve (MVQ, Philips). The eccentricity ratio was calculated as AP/SL. The tricuspid annular area decreases during systole in both groups, and is greatest in mid-diastole. The area is significantly larger in the DRH group (mean 1566 mm2 DRH vs. 1097 mm2 controls; P 0.01). The SL diameter increases proportionately more in the DRH group, resulting in a more circular orifice and lower eccentricity ratios (eccentricity ratio mean 1.01 DRH vs. 1.24 controls; P 0.01). The dynamic diastolic to systolic change in the SL diameter is lost in patients with DRH, contributing to the more circular TVA orifice throughout systole. Conclusion Three-dimensional TOE allows us to examine the TVA in great detail. In patients with DRH, the TVA dilates in a SL direction, resulting in a more circular orifice. The dynamic changes of the TVA are lost in patients with DRH, potentially contributing to functional tricuspid regurgitation.
机译：背景技术三尖瓣环（TVA）是一个复杂的三维结构，目前尚未完全了解。三维经食道回声（TOE）为我们提供了详细检查此结构的机会。方法和结果纳入50例患者，分为两组：对照组（n = 20）和右心扩张（DRH，n = 30）。使用iE33机器和X7-2t传感器获取TVA的三维缩放图像。在适用于设计用于评估二尖瓣的市售软件（MVQ，Philips）的心动周期的6个点上测量前后（AP）直径，隔侧（SL）直径，面积，周长和高度。偏心率计算为AP / SL。两组的三尖瓣环面积在收缩期均减少，而舒张中期最大。 DRH组的面积明显更大（平均DRH组为1566 mm2，对照组为1097 mm2; P <0.01）。 SLH直径在DRH组中成比例地增加，从而导致更大的圆形孔口和更低的偏心率比（偏心率平均值为1.01 DRH对1.24对照; P <0.01）。 DRH患者的SL直径动态舒张到收缩改变消失，导致整个收缩期TVA孔更圆。结论三维TOE使我们能够详细检查TVA。在患有DRH的患者中，TVA在SL方向上扩张，从而形成更圆形的孔口。 DRH患者TVA的动态变化丢失，可能导致功能性三尖瓣关闭不全。

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