Sodium nitroprusside reduces lung injury after cardiopulmonary bypass

作者：Xuemei Zheng, Qing-hao Fan, Wen-hua Wan, Jingran Sun · 发表于：Zhonghua xiaoerwaike zazhi · 年份：2011 · DOI：10.3760/cma.j.issn.0253-3006.2011.04.015 · 研究领域：Neurological Disorders and Treatments、Cardiac and Coronary Surgery Techniques、Nitric Oxide and Endothelin Effects

Objective To investigate the protective effects of sodium nitroprusside on lung injury induced by cardiopulmonary bypass (CPB). Methods Twenty piglets were randomly divided into group A (n = 10) and group B (n = 10). The piglets of the group A were administered with sodium nithe end of the experiment. The piglets of group B were continuously injected with saline. Peak pressure (Ppk) of the airway was measured before CPB (T1), at the time releasing aortic cross-clamp,and 5 min (T3), 20 min (T4), 40 min (T5), 60 min (T6) after CPB. The blood gases, neutrophils count and TNF-α, IL-8, IL-6 and IL-10 levels were measured at T1, T3, and T6. Lung tissue was collected to measure the wet to dry weight ratio (W/D). The morphologic changes of the lung were also studied. Results At T3, TNF-α, IL-6, and IL-8 levels, Ppk and W/D ratios of group A were significantly lower than those of group B 33.38 ± 9. 71 pg/ml vs 46. 09 ± 12. 12 pg/ml, 27. 84 ±11. 96 pg/ml vs 40. 99 ± 7. 94 pg/ml, 16. 57 ± 1.51 mmHg vs 23. 00 ± 2. 00 mmHg, 0. 21 ± 0. 03 vs 0. 27 ± 0. 04,respectively). At T3, IL-10, oxygenation index, and alveolar-arterial oxygen ratio of group A were significantly higher than those of group B (37. 88 ± 7. 79 pg/ml vs 27. 62 ± 11. 53 pg/ml, 463. 05 ±40. 50% vs 382. 62 ± 80. 01 %, 0. 75 ± 0. 10 vs 0. 56 ± 0. 12). At T6, the neutrophil sequestration,IL8 level, and alveolar-arterial oxygen ratio of group A were significantly higher than those of group B (0. 48 ± 0. 21 vs 0. 77 ± 0. 29, 24. 9...