Age-Related Decrease in Inferior Vena Cava Diameter Measured with Echocardiography
Age-Related Decrease in Inferior Vena Cava Diameter Measured with Echocardiography
复制标题
DOI：
10.1620/tjem.222.141
复制
发表时间：
2010-10-01
影响因子：
2.2
通讯作者：
Goda, Fuminori
中科院分区：
文献类型：
--
作者：
Masugata, Hisashi;Senda, Shoichi;Goda, Fuminori
通过超声心动图测量的下腔静脉（IVC）的直径在临床上被用作估计右心房压力的参数，该压力反映了脱水或过度水合。由于老年患者容易脱水，老年患者下腔静脉直径的正常值可能对老年医学有帮助。然而，尚未研究 IVC 直径的正常值与年龄的关系。本研究的目的是利用超声心动图阐明 IVC 直径与年龄相关的变化。参与该研究的 200 名患者（67 +/- 15 岁：范围 17-94 岁）患有心血管危险因素，但没有明显的心脏病。使用 M 模式超声心动图测量整个呼吸周期的 IVC 直径，即最大和最小 IVC 直径（IVCmax、IVCmin）。为了评估 IVC 塌陷性，IVC 直径的呼吸相变化计算为 (IVCmax - IVCmin)/(IVCmax)x 100。最大 IVC 直径随着年龄的增长而减小 (r = 0.221，p = 0.002)。 IVC 直径的呼吸相变化随着年龄的增长而增加（r = 0.244，p = 0.001）。逐步多元回归分析显示，年龄是最大 IVC 直径（β 系数 = -0.249，p < 0.001）和 IVC 直径呼吸相变异（β 系数 = 0.268，p < 0.001）的独立决定因素。与年龄相关的最大 IVC 直径的减小和呼吸相 IVC 塌陷性的增加可能表明某些老年患者右心房压力的降低。因此，最大 IVC 降低和呼吸相 IVC 塌陷度增加的老年患者可能需要预防脱水。
The diameter of the inferior vena cave (IVC) measured with echocardiography is clinically used as a parameter to estimate right atrial pressure, which reflects dehydration or overhydration. Because elderly patients fall easily into dehydration, normal values for IVC diameters in elderly patients may be helpful for geriatric medicine. However, normal values of IVC diameter in relation to age have not been investigated. The purpose of this study was to elucidate age-related changes in IVC diameter using echocardiography. Enrolled in the study were 200 patients (67 +/- 15 yrs: range 17-94 yrs) with cardiovascular risk factors but no overt cardiac diseases. IVC diameters throughout the respiratory cycle were measured as maximum and minimum IVC diameters (IVCmax, IVCmin) using M-mode echocardiography. To assess IVC collapsibility, the respirophasic variation of IVC diameter was calculated as (IVCmax - IVCmin)/(IVCmax)x 100. Maximum IVC diameter was decreased with advancing age (r = 0.221, p = 0.002). The respirophasic variation of the IVC diameter was increased with advancing age (r = 0.244, p = 0.001). Stepwise multiple regression analysis showed that age was an independent determinant for both maximum IVC diameter (beta coefficient = -0.249, p < 0.001) and respirophasic variation of the IVC diameter (beta coefficient = 0.268, p < 0.001). Age-related decrease in maximum IVC diameter and increase in the respirophasic IVC collapsibility may indicate the decrease in right atrial pressure in some elderly patients. Therefore, elderly patients with decreased maximum IVC and increased respirophasic IVC collapsibility may need prevention for dehydration.