灌注压和视网膜小动脉管径的体位变化。

Postural changes in perfusion pressure and retinal arteriolar calibre.

作者信息

Hague S, Hill D W

机构信息

Research Department of Ophthalmology, Royal College of Surgeons of England, London.

出版信息

Br J Ophthalmol. 1988 Apr;72(4):253-7. doi: 10.1136/bjo.72.4.253.

DOI:10.1136/bjo.72.4.253

PMID:3378020

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1041427/

Abstract

Ophthalmic artery perfusion pressures and retinal arteriolar calibres were studied in 10 human subjects when sitting, standing, and lying. Differing responses in perfusion pressure were found; autoregulatory responses were found in 13 of the 18 significant calibre changes on moving from sitting to standing and 13 of 22 significant calibre changes on moving from standing to lying. The remaining significant calibre changes were non-autoregulatory, the arterioles dilating with perfusion pressure increase and constricting with decrease.

摘要

对10名受试者在坐姿、站姿和躺姿时的眼动脉灌注压和视网膜小动脉管径进行了研究。发现灌注压存在不同反应；从坐姿变为站姿时，18次显著管径变化中有13次出现了自动调节反应，从站姿变为躺姿时，22次显著管径变化中有13次出现了自动调节反应。其余显著管径变化是非自动调节性的，小动脉随着灌注压升高而扩张，随着灌注压降低而收缩。