A 3-year-old child is hospitalized with burns covering her trunk and lower extremities. Which of the following would the nurse use to assess adequacy of fluid resuscitation in the burned child?

1. A

   Blood pressure

2. B

   Serum potassium level

3. C

   Urine output

4. D

   Pulse rate

Appeared in: NORCET 5 mains

Explanation

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• Urine output is the most accurate and sensitive indicator of adequate fluid resuscitation in burn patients.
• It serves as a direct measure of end-organ (renal) perfusion, confirming that the circulatory volume is sufficient to supply vital organs.
• In children, the target urine output during fluid resuscitation for burns is generally 0.5 to 1 mL per kilogram of body weight per hour.
• Maintaining this target output helps prevent complications like acute kidney injury, which is a major risk in severe burns.

Why Other Options Were Wrong

• Option A: Blood pressure is an unreliable indicator in the early stages of shock in children. A child's body can compensate for up to 25% blood volume loss while maintaining a normal blood pressure.
• Option B: Serum potassium levels do not reflect fluid volume status. In the acute phase of a burn, potassium is released from damaged cells, causing hyperkalemia.
• Option D: Pulse rate is a non-specific indicator. While tachycardia is an early sign of hypovolemia, it is also caused by pain, fever, and anxiety, all of which are expected in a severely burned child.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Assessment of fluid resuscitation adequacy in pediatric burn patients to guide bedside assessment, documentation, and the next nursing action.
• For any patient with major burns, the nurse's primary responsibility includes inserting an indwelling urinary catheter for precise, hourly monitoring of urine output.
• Failure to maintain adequate urine output (less than 0.5 mL/kg/hr) must be reported to the physician immediately, as it indicates inadequate resuscitation and an impending risk of acute kidney injury.
• What if? If the child had a pre-existing kidney disease, urine output might not be a reliable indicator. In such cases, clinicians would rely more on other hemodynamic parameters like central venous pressure, lactate levels, and cardiac output monitoring.

How to Approach the Question

• First, identify the core of the question: it asks for the best or most adequate method to assess fluid resuscitation.
• Recall the pathophysiology of burn shock: massive fluid loss from the intravascular space leads to hypovolemia and decreased organ perfusion.
• Evaluate each option based on its ability to reflect organ perfusion and its sensitivity to changes in fluid volume.
• Eliminate non-specific indicators. Pulse rate is affected by pain and stress.
• Eliminate indicators that reflect a different problem. Serum potassium reflects cell damage, not volume.
• Compare the remaining options. Blood pressure is a late sign in children, while urine output is a direct and early measure of kidney perfusion.

Concept Tested & Keywords

• Concept Tested: Assessment of fluid resuscitation adequacy in pediatric burn patients.
• Stem keywords: 3-year-old child, burns, fluid resuscitation, assess adequacy
• Lead-in keywords: Which of the following
• Clinical cues: Patient is a 3-year-old child, a population where vital sign interpretation requires special consideration.
• Clinical cues: The context is burn injury, which involves massive fluid shifts and specific monitoring needs.

Question ID

QYQ16RgXnQxVxUt21ckeEl

Copy ID

Reference Book

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 762-764

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 575-577

E6 Nursing Vital Signs p. 154-156