HESI 366 Practice Test 2026 - Free Practice Questions and Study Guide

Normal vital signs without fever show the infant’s body is not under active stress and is stabilizing. When the infant is afebrile and has a normal respiratory rate and heart rate, it indicates good oxygenation, no respiratory distress, and stable perfusion—together this strongly signals improvement in the overall condition. Other signs, like being held comfortably or tolerating a certain amount of formula, reflect comfort or intake but can be influenced by soothing or feeding alone and don’t prove systemic stabilization as clearly as normalized vitals do. Hydration markers such as urine output are helpful, but they don’t, by themselves, confirm that the infant’s critical physiologic status has improved to the same extent as normalized vitals.