Improved oxygenation with prostaglandin F2alpha with and without inhaled nitric oxide in dogs.

Improved oxygenation with prostaglandin F2alpha with and without inhaled nitric oxide in dogs.
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使用或不使用吸入一氧化氮的情况下,用前列腺素 F2α 改善狗的氧合作用。

DOI:
10.1152/jappl.1998.84.4.1350
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发表时间:
1998
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
通讯作者:
Marshall,C
Marshall,C
中科院分区:
--
文献类型:
--
作者:
Marshall,BE;Chen,L;Frasch,HF;Hanson,CW;Marshall,C

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将混合品种的狗(n= 7)麻醉,建立右肺肺不张,并用布洛芬阻断环氧合酶途径。在按随机顺序输注前列腺素F2α(PGF 2 α; 2 μg·kg-1·min-1)、一氧化氮通气(NO; 40 ppm)或两者(PGF 2 α+ NO)后,进行肺气体交换测量(吸入O2分数浓度= 0.95)。对照条件下的动脉()为117 ± 16 Torr(分流= 33 ± 2.5%),单独使用NO时无变化(= 114 ± 17 Torr;分流= 35.7 ± 3.1%),但单独使用PGF 2 α时显著改善(= 180 ± 28 Torr;分流= 23.2 ± 2.8%)和PGF 2 α+ NO组合(= 202 ± 30 Torr;分流= 20.9 ± 2.5%)。NO的加入并没有显著增强PGF 2 α对心肌细胞的保护作用。结合肺气体交换和肺血流量,在计算机模型中模拟这些数据,重现了以下结果:在肺不张肺中,PGF 2 α的血管收缩在缺氧时最大,而在通气肺中,高氧降低了血管收缩,这与PGF 2 α血管收缩的O2依赖性假设一致。
Dogs of mixed breed (n= 7) were anesthetized, right lung atelectasis was established, and the cyclooxygenase pathway was blocked with ibuprofen. Measurements of pulmonary gas exchange were performed (fractional concentration of inspired O2= 0.95) after infusions of prostaglandin F2α(PGF2α; 2 μg ⋅ kg−1⋅ min−1), ventilation with nitric oxide (NO; 40 ppm), or both (PGF2α+ NO) in random order. The arterial() under control conditions was 117 ± 16 Torr (shunt = 33 ± 2.5%), was unchanged with NO alone (= 114 ± 17 Torr; shunt = 35.7 ± 3.1%), but was significantly improved with PGF2αalone (= 180 ± 28 Torr; shunt = 23.2 ± 2.8%) and with the combination of PGF2α+ NO (= 202 ± 30 Torr; shunt = 20.9 ± 2.5%). The addition of NO did not significantly enhance the effectiveness of the PGF2αon. Simulation of these data in a computer model, combining pulmonary gas exchange and pulmonary blood flow, reproduced the results on the basis that vasoconstriction with PGF2αwas maximal under hypoxia in the atelectatic lung and reduced by hyperoxia in the ventilated lung, consistent with the hypothesis of O2dependence of PGF2αvasoconstriction.
狗肺叶对肺叶静脉阻塞的血流动力学反应。
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