What is a common finding in a child with a history of extensive burns?

In children with a history of extensive burns, decreased urine output is a common finding due to several physiological responses to such injuries. Extensive burns can lead to fluid loss through the damaged skin, which results in hypovolemia (a decrease in blood volume) and subsequent pre-renal azotemia. The body responds to this fluid loss by conserving water, often leading to decreased urine output as the kidneys attempt to maintain fluid balance.

Additionally, extensive burns can activate the stress response, causing increased catecholamine levels, which can lead to increased heart rate and blood pressure. However, with significant fluid loss and the need for resuscitation, urine output can be a critical indicator of the child's hydration status and kidney function. Therefore, monitoring for decreased urine output is crucial in managing a child with significant burn injuries.

The other options do not align with typical physiological responses seen in burn patients. Increased appetite and hyperactivity may not be common due to the physical stress and trauma that extensive burns cause; instead, children may exhibit lethargy or a reduced desire to eat due to pain, anxiety, or illness. Moreover, stable vital signs are unlikely in the context of extensive burns, as these patients often exhibit signs of shock or instability requiring close monitoring and intervention