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通过多普勒超声测量正常门静脉血流

Measurement of normal portal venous blood flow by Doppler ultrasound.

作者信息

Brown H S, Halliwell M, Qamar M, Read A E, Evans J M, Wells P N

机构信息

Department of Medical Physics, Bristol and Weston Health Authority.

出版信息

Gut. 1989 Apr;30(4):503-9. doi: 10.1136/gut.30.4.503.

Abstract

The volume flow rate of blood in the portal vein was measured using a duplex ultrasound system. The many errors inherent in the duplex method were assessed with particular reference to the portal vein and appropriate correction factors were obtained by in vitro calibration. The effect of posture on flow was investigated by examining 45 healthy volunteers in three different positions; standing, supine and tilted head down at 20 degrees from the horizontal. The mean volume blood flow in the supine position was 864 (188)ml/min (mean 1SD). When standing, the mean volume blood flow was significantly reduced by 26% to 662 (169)ml/min. There was, however, no significant difference between flow when supine and when tilted head down at 20 degrees from the horizontal.

摘要

使用双功超声系统测量门静脉中的血流体积流量。特别参照门静脉评估了双功方法中固有的许多误差,并通过体外校准获得了适当的校正因子。通过检查45名处于三种不同体位(站立、仰卧和头向下倾斜20度)的健康志愿者,研究了体位对血流的影响。仰卧位时的平均血流量为864(188)ml/分钟(平均值±标准差)。站立时,平均血流量显著降低26%,降至662(169)ml/分钟。然而,仰卧位和头向下倾斜20度时的血流之间没有显著差异。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b2c/1434022/7b6f5ecce122/gut00217-0100-a.jpg

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