MMWR Morb Mortal Wkly Rep. 2012 Mar 2;61(8):139-42.
In January 2011, the New Hampshire Department of Health and Human Services (NHDHHS) investigated acute respiratory symptoms in a group of ice hockey players. The symptoms, which included cough, shortness of breath, hemoptysis, and chest pain or tightness, were consistent with exposure to nitrogen dioxide gas (NO), a byproduct of combustion. Environmental and epidemiologic investigations were begun to determine the source of the exposure and identify potentially exposed persons. This report summarizes the results of those investigations, which implicated a local indoor ice arena that had hosted two hockey practice sessions during a 24-hour period when the arena ventilation system was not functioning. A total of 43 exposed persons were interviewed, of whom 31 (72.1%) reported symptoms consistent with NO exposure. The highest attack rate was among the hockey players (87.9%). After repair of the ventilation system, no additional cases were identified. To prevent similar episodes, ice arena operators should ensure ventilation systems and alarms are operating properly and that levels of NO and carbon monoxide (CO) are monitored continuously for early detection of increased gas levels.
2011 年 1 月，新罕布什尔州卫生与公众服务部（NHDHHS）调查了一组冰球运动员的急性呼吸道症状。这些症状包括咳嗽、呼吸急促、咯血以及胸痛或胸闷，与接触二氧化氮（NO）气体一致，NO 是燃烧的副产品。环境和流行病学调查已开始确定暴露源并识别潜在暴露者。本报告总结了这些调查的结果，这些结果表明当地一个室内冰场在其通风系统停止运行的 24 小时内举办了两次冰球练习，导致了暴露事件。共有 43 名接触者接受了采访，其中 31 人（72.1%）报告了与 NO 暴露相一致的症状。冰球运动员的发病率最高（87.9%）。通风系统修复后，未再发现其他病例。为了防止类似事件，冰场运营商应确保通风系统和警报正常运行，并持续监测 NO 和一氧化碳（CO）水平，以便及早发现气体水平升高。
