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Negative-pressure pulmonary Hemorrhaging Due to Severe Obstructive Sleep Apnea
Kenya Kuramoto1, Masashi Matsuyama1, Mizu Nonaka1
1Department of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Japan.
Abstract:
A 24-year-old man with a history of bloody sputum for 6 months was referred to our hospital with suspected alveolar hemorrhaging due to vasculitis. Chest computed tomography showed ground-glass opacities in both lungs, and an examination of his bronchoalveolar lavage fluid showed alveolar hemorrhaging. However, no evidence of vasculitis was found, and subsequent polysomnographic testing confirmed that he had severe obstructive sleep apnea (OSA). Since the alveolar hemorrhaging improved after the initiation of continuous positive airway pressure treatment, the diagnosis was negative-pressure alveolar hemorrhaging due to severe OSA.
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