Journal of internal medicine
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Exposure to the toxic gases carbon monoxide and nitrogen dioxide (NO2) in indoor ice arenas occasionally occurs and may result in severe symptoms. The gases are produced by ice resurfacing machines operating on hydrocarbons, and in certain conditions toxic levels accumulate. The damage to lung tissues caused by NO2 may not be evident until after a latency time of 1/2-2 days. ⋯ Chest radiographs showed parenchymatous infiltrative lesions and alveolar consolidation. Both patients were treated with high doses of corticosteroids by inhalation and orally or intravenously. Their condition rapidly improved and pulmonary function was restored.
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To investigate the prevalence of and the factors associated with daytime sleepiness occurring every or almost every day. ⋯ Daytime sleepiness occurring daily or almost daily is most often associated with depression, insomnia and sleep-disordered breathing. In most cases, indications of the cause of sleepiness can be obtained by using simple screening questions.