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Severe physical exertion, oxidative stress, and acute lung injury.

机译:剧烈的体力消耗,氧化应激和急性肺损伤。

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摘要

We report the case of a 27-year-old male athlete presenting with severe dyspnoea 24 hours after completing an "Ironman Triathlon." Subsequent chest radiology excluded pulmonary embolus but confirmed an acute lung injury (ALI). Echocardiography corroborated a normal brain natriuretic peptide level by demonstrating good biventricular systolic function with no regional wall motion abnormalities. He recovered well, without requiring ventilatory support, on supplemental oxygen therapy and empirical antibiotics. To date, ALI following severe physical exertion has never been described. Exercise is a form of physiological stress resulting in oxidative stress through generation of reactive oxygenitrogen species. In its extreme form, there is potential for an excessive oxidative stress response--one that overwhelms the body's protective antioxidant mechanisms. As our case demonstrated, oxidative stress secondary to severe physical exertion was the most likely factor in the pathogenesis of ALI. Further studies are necessary to explore the pathological consequences of exercise-induced oxidative stress. Although unproven as of yet, further research may be needed to demonstrate if antioxidant therapy can prevent or ameliorate potential life-threatening complications in the acute setting.
机译:我们报告了一名27岁的男性运动员在完成“铁人三项全能”后24小时出现严重呼吸困难的情况。随后的胸部放射学检查排除了肺栓塞,但确认为急性肺损伤(ALI)。超声心动图显示出良好的双心室收缩功能,无局部室壁运动异常,从而证实了正常的脑钠肽水平。他在补充氧气疗法和经验性抗生素的帮助下恢复良好,无需呼吸支持。迄今为止,还没有描述剧烈运动后的ALI。运动是生理应激的一种形式,通过产生活性氧/氮物质而导致氧化应激。在最极端的情况下,可能会产生过度的氧化应激反应,这种反应会淹没人体的保护性抗氧化机制。如我们的案例所示,继发于严重体力消耗的氧化应激是ALI发病机理中最可能的因素。有必要进行进一步的研究以探讨运动引起的氧化应激的病理后果。尽管目前尚未得到证实,但可能需要进一步的研究来证明抗氧化剂治疗是否可以预防或减轻急性环境中潜在的威胁生命的并发症。

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