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Am J Resp Crit Care:早产青年人早期肺血管疾病

2018-07-03 xing.T MedSci原创

由此可见,早产的青年人表现出早期肺血管疾病,其特征是肺动脉压升高,肺血管床硬化,右心室功能障碍,这些改变与发生肺动脉高压的风险增加相一致。

在美国,早产影响了10%的活产婴儿,并且与肺泡简化和肺微血管发育改变有关。然而,关于早产对肺血管系统的长期影响知之甚少。近日,呼吸内科以及重症医学领域权威杂志Am J Resp Crit Care上发表了一篇研究文章,研究人员旨在确定早产儿对右心室和肺血管血流动力学的长期影响。

研究人员从新生儿肺部工程招募了早产儿受试者(n=11),该项目是威斯康星大学麦迪逊分校的一项前瞻性随访队列,受试者出生于1988年至1991年间,出生时体重极低(≤1500g;平均孕龄28周)。相同出生年份的对照受试者(n=10)从一般人群中招募。所有受试者均无已知的成人心肺疾病。研究人员进行了右心导管检查以评估静息时和缺氧和运动应激期间的右心室和肺血管血流动力学。

早产儿的平均肺动脉压(mPAP)较高,27%(3/11)的受试者符合临界肺动脉高压(mPAP为19-24mmHg)和18%(2/11)的受试者符合显著肺动脉高压的标准( mPAP≥25mmHg)。静息时和运动时肺血管阻力和弹性较高,表明血管床硬化。早产受试者在运动期间心脏指数或右心室搏出量显著降低。在新生儿临床特征中,总通气支持天数是成人肺动脉压最强的预测指标。

由此可见,早产的青年人表现出早期肺血管疾病,其特征是肺动脉压升高,肺血管床硬化,右心室功能障碍,这些改变与发生肺动脉高压的风险增加相一致。

原始出处:

Kara N. Goss,et al.Early Pulmonary Vascular Disease in Young Adults Born Preterm.AM J RESP CRIT CARE 2018.https://doi.org/10.1164/rccm.201710-2016OC       

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    2018-10-07 zll0625
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    2018-07-03 sunfeifeiyang

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