NEJM:血管紧张素II治疗血管扩张性休克疗效如何?

2017-08-07 MedSci MedSci原创

众所周知血管扩张性休克对大剂量的血管加压素没有反应,而与高死亡率相关。近日在NJEM上发表的一篇文章则研究了血管紧张素II对这种情况的疗效。

众所周知血管扩张性休克对大剂量的血管加压素没有反应,而与高死亡率相关。近日在NJEM上发表的一篇文章则研究了血管紧张素II对这种情况的疗效。

该研究随机分配接受超过0.2μg/kg/min去甲肾上腺素或其他等剂量血管加压素的血管扩张性休克患者,接受血管紧张素II或安慰剂注射。主要终点是平均动脉压在注射后3小时开始反应,所谓反应是指在之前升压药作用没有上升的情况下,平均动脉压从基线上升至少10mmHg或者至少上升至75mmHg。

该研究共纳入344名患者,321例接受了干预研究(163例接受血管紧张素Ⅱ,158例接受安慰剂),并纳入分析。血管紧张素Ⅱ组(114例,69.9%)较安慰剂组(37例,23.4%)更多人达到了主要终点(比值比,7.95;95%CI 4.76-13.3,p<0.001)。在48小时内,血管紧张素II组较安慰剂组的心血管序贯器官衰竭评分(SOFA)(分数范围从0到4,分数高意味严重的功能障碍)改善提高(-1.75 vs.?1.28,P = 0.01)。在严重不良事件方面,血管紧张素II组为60.7%,在安慰剂组为67.1%。28天死亡在血管紧张素II组为75(46%),在安慰剂组为85(54%)(风险比,0.78;95% CI,0.57-1.07;P = 0.12)。

由上述研究可见血管紧张素II可有效提高对高剂量常规升压药没有反应的血管扩张性休克患者的血压。

原始出处:

Ashish Khanna.et al. Angiotensin II for the Treatment of Vasodilatory Shock. N Engl J Med. August 3,2017.

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  乳腺癌是女性排名第一的常见恶性肿瘤,其癌细胞转移是引起患者死亡的主要原因。目前的研究正在进一步阐明癌症转移的限速步骤,比如循环肿瘤细胞的外渗及侵袭。 血管紧张素II是一种主要的血管活性肽,它局部产生并释放到血液。近日,法国巴黎科尚研究所的研究人员着手完成了一项有意义的研究,他们发现血管紧张素II能够促进癌细胞迁移。 在该研究中,他们使用了一个癌症转移的体内模型。为了研究癌细

Hypertension:血管紧张素II敏感性的增加促进既往先兆子痫妇女微血管功能障碍!

这些数据表明先兆子痫孕妇在产后持续存在微血管功能障碍,其部分原因是对血管紧张素II的敏感性增加所致。