Hypertension:先兆子痫史对脑血管有深远影响!

2017-11-22 MedSci MedSci原创

认知功能下降的患者常常伴有脑血管反应性(CVR)的降低。有先兆子痫史的女性,其认知能力下降的风险也相应增加。近期,一项发表在杂志Hypertension上的研究招募40名具有先兆子痫史(n = 27)或血压正常妊娠史(n = 29)的成对匹配的妇女,评估了妊娠史与CVR之间的关联以及活化的血液成分与CVR之间的相关性。在发生高碳酸血症之前和期间,通过多普勒超声测量大脑中动脉速度以评估CVR。使用主

认知功能下降的患者常常伴有脑血管反应性(CVR)的降低。有先兆子痫史的女性,其认知能力下降的风险也相应增加。


近期,一项发表在杂志Hypertension上的研究招募40名具有先兆子痫史(n = 27)或血压正常妊娠史(n = 29)的成对匹配的妇女,评估了妊娠史与CVR之间的关联以及活化的血液成分与CVR之间的相关性。

在发生高碳酸血症之前和期间,通过多普勒超声测量大脑中动脉速度以评估CVR。使用主成分分析评估静脉血中测量的血细胞成分、微泡和细胞-细胞相互作用的38个参数与CVR的关联。

研究结果显示:子痫前期,大脑中动脉血流速度低于血压正常组(63±4 vs. 73±3 cm/s;P = 0.047)和高碳酸血症(P = 0.013〜0.056)。先兆子痫组的CVR明显低于正常血压组(2.1±1.3 vs. 2.9±1.1cm.s.mmHg;P = 0.009)。

在全球范围内,7个确定的主要成分与先兆子痫(P = 0.107)和基线大脑中动脉速度(P = 0.067)的关联并没有达到统计学意义。

妊娠史和主要成分之间(被定义为血液成分,血小板聚集,以及相互作用的血小板与单核细胞和粒细胞(P= 0.008))在CVR方面的相互作用(P = 0.084)是由先兆子痫和个体主要成分之间的名义上显着的相互作用引起的。

此项结果表明,有先兆子痫的病史对脑循环有不利的影响,并且这种影响与激活的血液成分有关。

原始出处:
Barnes JN, Harvey RE, et al. Cerebrovascular Reactivity and Vascular Activation in Postmenopausal Women With Histories of Preeclampsia. Hypertension. 2017 Nov 20. pii: HYPERTENSIONAHA.117.10248. doi: 10.1161/HYPERTENSIONAHA.117.10248.

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