Ultrasonic crystal measurement of blood volume changes in liver and spleen.

Ultrasonic crystal measurement of blood volume changes in liver and spleen.
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超声波晶体测量肝脏和脾脏的血容量变化。

DOI:
10.1152/ajpgi.1992.262.5.g934
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发表时间:
1992
期刊:
The American journal of physiology
影响因子:
--
通讯作者:
Rothe,CF
Rothe,CF
中科院分区:
--
文献类型:
--
作者:
Greenway,CV;Rothe,CF

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比较了戊巴比妥麻醉猫脾和肝血管电容反应的两种测量方法。对于脾脏,将超声晶体测量结果与脾脏重量记录进行比较。脾脏纵轴上某一点厚度相对变化的立方与脾脏重量的整体变化密切相关。对于肝脏,超声晶体测量值与肝脏体积描记仪记录值进行比较。单独测量的立方相对厚度与体积描记体积没有很好的相关性,同一肝叶上的两组晶体给出了不同的相对肝脏体积估计值。然而,两种方法对一组动物的平均测量结果显示出相似的结果。我们的结论是,超声晶体,当适当地连接,可以可靠地监测脾体积的变化,但对于肝脏,厚度响应的可变性在不同的肝脏的不同部位是很高的。除非进行大量的观察,否则所得的结果是不可靠的。
Two methods of measurement of splenic and hepatic vascular capacitance responses were compared in cats anesthetized with pentobarbital. For the spleen, measurements using ultrasonic crystals were compared with recordings of splenic weight. The cube of the relative change in thickness at one point on the longitudinal axis of the spleen was closely correlated with the overall change in spleen weight. For the liver, measurements by ultrasonic crystals were compared with plethysmographic recordings of liver volume. Individual measurements of cubed relative thickness did not correlate well with plethysmographic volume, and two sets of crystals on the same liver lobe gave different estimates of relative liver volume. However, averaged measurements for a group of animals showed similar means by the two methods. We conclude that ultrasonic crystals, when appropriately attached, can reliably monitor changes in splenic volume, but that for the liver, the variability in thickness responses at different sites on different livers is high. Unless a large number of observations are made, the results will be unreliable.
天然和化学修饰的异柠檬酸脱氢酶与底物的结合。
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