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Anaesthesia
A 60-kg, 53-year-old man with no significant medical problems undergoes lysis of adhesions for a small-bowel obstruction. Postoperatively, he has high nasogastric output and low urine output. What is the most appropriate management of his fluids?
Infusion of D5 0.45% normal saline at 100 mL/h
Infusion of D5 0.9% normal saline at 100 mL/h
Infusion of D5 lactated Ringer at 100 mL/h
Replacement of nasogastric tube losses with lactated Ringer in addition to maintenance fluids
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