The role of patent ductus arteriosus and its treatments in the development of bronchopulmonary dysplasia.

The role of patent ductus arteriosus and its treatments in the development of bronchopulmonary dysplasia.
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DOI:
10.1053/j.semperi.2013.01.006
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发表时间:
2013-04
影响因子:
3.4
通讯作者:
Clyman RI
Clyman RI
中科院分区:
医学3区
文献类型:
--
作者:
Clyman RI

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通过动脉导管未闭(PDA)的持续性左向右分流增加了流体静力学液体过滤进入肺动脉内膜的速率,损害了肺力学,并减少了机械通气的需要。在临床前试验中,药物PDA闭合导致肺泡化改善,并最大限度地减少出生后肺泡发育受损,这是“新发支气管肺发育不良(BPD)"的病理标志。尽管早期药物封堵PDA可降低肺出血、脑室内出血和PDA结扎的发生率,但对照临床试验几乎没有证据支持或反驳PDA在BPD发生中的因果作用。另一方面,来自流行病学、临床前和随机对照临床试验的证据表明,早期导管结扎是BPD发展的独立危险因素,并可能直接导致其试图预防的新生儿发病率。
A persistent left-to right shunt through a patent ductus arteriosus (PDA) increases the rate of hydrostatic fluid filtration into the lung’s interstitium, impairs pulmonary mechanics, and prolongs the need for mechanical ventilation. In preclinical trials, pharmacologic PDA closure leads to improved alveolarization and minimizes the impaired postnatal alveolar development that is the pathologic hallmark of the “new bronchopulmonary dysplasia (BPD)”. Although early pharmacologic closure of the PDA decreases the incidence of pulmonary hemorrhage, intraventricular hemorrhage, and the need for PDA ligation, there is little evidence from controlled, clinical trials to support or refute a causal role for the PDA in the development of BPD. On the other hand, evidence from epidemiologic, preclinical, and randomized controlled clinical trials demonstrate that early ductus ligation is an independent risk factor for the development of BPD and may directly contribute to the neonatal morbidities it is trying to prevent.
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