Salsabil A healthy 24-year-old woman was involved in an automobile accident, and sustained a fracture of her jaw, multiple facial bone fractures, and a brief loss of consciousness. In the emergency department, an intravenous infusion of 5% dextrose in 0.45% normal saline at 125 mL/hr was started. Twelve hours after admission to the hospital, she was awake and alert but had diffi culty swallowing and talking because of her injuries, and she complained of extreme thirst. Her urine output was 500–600 mL/hr. Laboratory studies showed that her serum sodium concentration was 156 mEq/L with a plasma osmolality of 320 mOsm/kg. Her urine osmolality was 65 mOsm/kg. What is the most likely diagnosis?
Posted on: Mon, 08 Jul 2013 13:34:54 +0000
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