A nurse is monitoring a client who was admitted with a severe burn injury and is receiving IV fluid resuscitation therapy. The nurse should identify a decrease in which of the following findings as an indication of adequate fluid replacement?

Choice A reason: A decrease in blood pressure is not an indicator of adequate fluid replacement in burn patients. Severe burns cause hypovolemia from fluid loss, leading to hypotension. Adequate resuscitation should increase blood pressure by restoring intravascular volume, improving cardiac output, and ensuring tissue perfusion, not decrease it. Choice B reason: A decrease in heart rate indicates adequate fluid replacement in burn patients. Severe burns cause hypovolemia, triggering tachycardia as the heart compensates for low blood volume. Restoring intravascular volume with IV fluids reduces the sympathetic drive, slowing the heart rate to normal, reflecting improved perfusion and hemodynamic stability. Choice C reason: A decrease in urine output is not a sign of adequate fluid replacement. Burn patients require high urine output (0.5-1 mL/kg/hr) to ensure renal perfusion and prevent acute kidney injury. Adequate resuscitation increases urine output by restoring blood volume, not decreasing it, as low output indicates ongoing hypovolemia. Choice D reason: A decrease in weight is not expected with adequate fluid replacement. Burn patients receive large volumes of IV fluids to counter hypovolemia and third-spacing, often leading to weight gain from fluid retention. A weight decrease could indicate inadequate resuscitation or diuresis, not successful restoration of intravascular volume.