（2)肾血管收缩(Contraction of renal blood vessels) 从而导致GFR降低 。（3)肾血管阻塞
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肾血管收缩(contraction of renal vessels)3. 肾脏血液流变学的变化(alteration of renal hemorheology)
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肾素-血管收缩素系统 renin-angiotension system
该研究表明夜间收缩压下降规律的丧失与移植肾功能差、慢性血管疾病积分高以及阻力指数高有关，而与移植肾纤维化无关。
This study indicates that lack of nocturnal fall in SBP is related to poor allograft function, high chronic vascular score, and high resistive index irrespective of allograft fibrosis.
结果不同阶段的肝硬化患者肾内血管收缩程度有明显的差异。
Results The intrarenal vasoconstriction in different stages of cirrhosis was significantly difference.
第二组处于收缩期正常流速，舒张末期低流速，肾血管高阻状态。
In the second phase group it was in a state of normal systolic flow velocity, low diastolic flow velocity and high renal vascular resistance.
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