What vital sign change is often an early indication of infection in children?

An increased heart rate, or tachycardia, is often an early indication of infection in children. When the body is fighting an infection, the heart rate can rise as part of the physiological response to increase blood flow, supply oxygen to tissues, and facilitate the immune response. Children may exhibit this increased heart rate even before other signs of infection become evident, such as fever or localized symptoms.

This vital sign change is crucial to monitor in pediatric patients, especially in those exhibiting signs of sepsis or serious infections, as it can help in the early detection and prompt intervention. Tracking heart rate alongside other vital signs allows healthcare professionals to assess the child's response and make informed decisions regarding the need for further evaluation or treatment.