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Effects of lung protective ventilation in prone or supine position on inhibiting adrenomedulin release in acute respiratory distress syndrome caused by pulmonary and extra-pulmonary insults in dog
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- Author:
- No author available
- Journal Title:
- CHINESE CRITICAL CARE MEDICINE
- Issue:
- 8
- DOI:
- 10.3760/cma.j.issn.1003-0603.2005.08.005
- Key Word:
- 急性呼吸窘迫综合征;肺保护通气;支气管肺泡灌洗液;肾上腺髓质素
Abstract： 目的观察在仰卧位和俯卧位条件下小潮气量+呼气末正压(PEEP)通气对急性呼吸窘迫综合征(ARDS)模型犬肺不同部位(肺上区肺尖叶、肺下区腹侧肺心叶和肺下区背侧肺膈叶)支气管肺泡灌洗液(BALF)中肾上腺髓质素(ADM)的作用,以评价不同体位肺保护通气方式对肺内/外源性ARDS(ARDSp/ARDSexp)的抗炎作用机制.方法健康雄性杂种犬24只,随机分为ARDSp仰卧位通气组、俯卧位通气组以及ARDSexp仰卧位通气组、俯卧位通气组,每组6只.静脉注射油酸制备ARDSexp动物模型;气管内注入十六烷磺基丁二酸钠盐制备ARDSp动物模型.动态观察不同卧位条件下小潮气量+PEEP对ARDS模型犬氧合指数和肺不同部位BALF中ADM的变化.结果肺损伤后ARDS犬氧合指数明显下降;ARDSp模型犬肺尖叶和肺心叶BALF中ADM水平明显高于ARDSexp模型;俯卧位条件下肺保护性通气对ARDS模型犬具有更好的治疗效果,氧合指数改善更为明显,ADM释放受到抑制.结论 ARDSexp和ARDSp对肺不同部位ADM释放的影响具有明显差异;俯卧位+小潮气量+PEEP通气模式对ARDSexp和ARDSp均具有良好的治疗效果.
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