Which urine output value at 48 hours post-burn would indicate adequate fluid resuscitation?

• A. 5 mL/h
• B. 50 mL/h
• C. 100 mL/h
• D. 0 mL/h

Answer: (B)

Urine output is a direct clue to how well fluid resuscitation is restoring renal perfusion after a burn. When fluids are sufficient, the kidneys begin producing urine at a steady, normal rate. For an adult, the target is a urine flow per hour that reflects adequate perfusion to the kidneys. Reaching this level by 48 hours after the burn suggests that fluid balance has been achieved without overloading the patient. Values that are too low indicate ongoing under-resuscitation or poor kidney perfusion, while an excessively high output can point to over-resuscitation. So the best choice is the one that aligns with the normal hourly urine output range for an adult, signaling adequate resuscitation.