首页> 外文期刊>American Journal of Physiology >Radionuclide plethysmography for noninvasive evaluation of peripheral arterial blood flow.
【24h】

Radionuclide plethysmography for noninvasive evaluation of peripheral arterial blood flow.

机译:放射性核素体积描记法用于无创评估外周动脉血流。

获取原文
获取原文并翻译 | 示例
           

摘要

We validated a noninvasive radionuclide plethysmography technique to evaluate peripheral arterial blood flow during reactive hyperemia. This method, based on the measurement of blood volume variations during repetitive venous occlusions, was compared with strain-gauge venous impedance plethysmography. The technique uses 99mTc-labeled autologous red blood cells scintigraphy to determine the rate of change of forearm scintigraphic counts during venous occlusion. Thirteen subjects were simultaneously evaluated with radionuclide and impedance plethysmography. Six baseline flow measurements were performed to evaluate the reproducibility of each method. Twenty-seven serial measurements were then made to evaluate flow variation during forearm reactive hyperemia. After 30 min of recovery, resting forearm blood flows were again evaluated. Impedance and radionuclide methods showed excellent reproducibility with intraclass correlation coefficients of 0.96 and 0.93, respectively. There was also good correlation offlows between both methods during reactive hyperemia (r = 0.87). Resting flows at 30 min after reactive hyperemia were slightly lower than at baseline with both methods. We conclude that radionuclide plethysmography could be used for the noninvasive evaluation of forearm blood flow and its dynamic variations during reactive hyperemia.
机译:我们验证了一种无创放射性核素体积描记术技术,以评估反应性充血期间外周动脉血流量。该方法基于对重复性静脉阻塞期间血容量变化的测量,并与应变计静脉阻抗体积描记法进行了比较。该技术使用99mTc标记的自体红细胞闪烁显像技术确定静脉闭塞期间前臂闪烁显像计数的变化率。同时用放射性核素和阻抗体积描记法对13名受试者进行了评估。进行了六次基线流量测量,以评估每种方法的重现性。然后进行二十七次连续测量以评估前臂反应性充血期间的血流变化。恢复30分钟后,再次评估前臂的静息血流。阻抗法和放射性核素法具有极好的重现性,组内相关系数分别为0.96和0.93。反应性充血期间两种方法之间的流量也具有良好的相关性(r = 0.87)。两种方法的反应性充血后30分钟的静息流量均略低于基线。我们得出的结论是,放射性核素体积描记法可用于无创评估前臂血流及其在反应性充血期间的动态变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号