Hypertens Pregnancy:妊高症的毛细血管改变

2015-05-11 MedSci MedSci原创

妊娠期高血压疾病是产科常见疾患,占全部妊娠的5%~10%,所造成的孕产妇死亡约占妊娠相关的死亡总数的10%~16%,是孕产妇死亡的第二大原因。其主要症状有高血压、蛋白尿、水肿等。因其病因及发病机制不清,由该病引起的高孕产妇及围生儿的死亡率和并发症一直威胁着人类健康并困扰着临床医生。近期Rusavy Z进行了一项研究,探究妊娠期高血压疾病孕妇体内毛细血管直径、功能等变化情况,进一步推测该疾病影响下体

妊娠期高血压疾病是产科常见疾患,占全部妊娠的5%~10%,所造成的孕产妇死亡约占妊娠相关的死亡总数的10%~16%,是孕产妇死亡的第二大原因。其主要症状有高血压、蛋白尿、水肿等。因其病因及发病机制不清,由该病引起的高孕产妇及围生儿的死亡率和并发症一直威胁着人类健康并困扰着临床医生。近期Rusavy Z进行了一项研究,探究妊娠期高血压疾病孕妇体内毛细血管直径、功能等变化情况,进一步推测该疾病影响下体内微循环系统的改变情况。其研究成果发表在近期 Hypertens Pregnancy 上。

研究者根据孕期并发症情况将纳入人群分为两组,一是妊娠期高血压疾病的高危妊娠孕妇(PIH),对照组则是未影响微循环系统的其他高危孕妇(O),对两组人群比较毛细管直径、密度和反应性等。研究者根据纳入人群甲襞情况记录了毛细管直径和评估功能性毛细血管密度等。结果用中位数 (四分间距) 表示。使用威尔科克森秩和检验分析的统计学结果(显著性水平:p < 0.05)。

研究结果显示,共有31名参与者的数据用于统计分析,其中并发有妊娠期高血压疾病PIH组占17人,余下14人为对照组。研究结果提示PIH组的毛细血管比O组更长(123(91;182) vs. 72(65;107)μm, p = 0.003);不仅如此PIH组的平均毛细管直径也比O组更大(12(10;13) vs. 10(9;11)μm, p = 0.017)。研究者没有发现两组的功能毛细血管密度有显著差异(20(17;25) vs. 19(15:21), p > 0.05),但是结果提示PIH组毛细血管恢复能力与O组相比明显降低(1(0;7) vs. 10(6;17), p = 0.006)。尽管PIH组中有10名病人是子痫前期,但是这些病人与PIH组其他病人相比,在上述变量方面并没有明显不同。

研究者提出该试验是第一个研究关于孕期静脉充血后毛细管直径变化的研究。同时研究结果表明,PIH组观察到静脉充血后毛细血管恢复能力明显降低和进一步扩张的功能下降,可能提示妊娠期高血压疾病会增加患者毛细管内皮的负荷,导致微循环系统功能的显著下降。

原始出处:

Rusavy Z, Pitrova B, Korecko V, Kalis V. Changes in capillary diameters in pregnancy-induced hypertension. Hypertens Pregnancy. 2015 : 1-7

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    2015-11-28 feather89
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    2015-05-13 huaxipanxing

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