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?:abstract
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A 26-y-old experienced scotoma scintillans after 59 min of scuba diving at a maximum depth of 26 m. After the patient smoked a cigarette, the scotoma scintillans ceased. However, he then developed a headache, general fatigue, and shoulder and elbow pain. He therefore called an ambulance. Based on the rules of the medical cooperative system for decompression sickness in Izu Peninsula, the fire department called a physician-staffed helicopter. After a physician checked the patient, his complaints remained aside from a low-grade fever. A portable ultrasound revealed bubbles in his inferior vena cava. Because of the risk of his being infected with COVID-19, he was transported to our hospital not by air evacuation but via ground ambulance staff while receiving a drip infusion of fluid and oxygen. After arriving at the hospital, his symptoms had almost subsided. Whole-body computed tomography revealed gas around the bladder, left hip, right knee, bilateral shoulder, joints, and right intramedullary humerus. The patient received high-concentration oxygen, infusion therapy, and observational admission. On the second day of admission, his symptoms had completely disappeared, and he was discharged. To our knowledge, this is the first report that computed tomography might be useful for detecting gas in multiple joints, suggesting the onset of decompression sickness after diving. This might be the first report of gas in an intramedullary space after diving as a potential cause of dysbaric osteonecrosis.
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