Which finding indicates stable respiratory status in an 8-month-old during observation?

Which finding indicates stable respiratory status in an 8-month-old during observation?

• A. Infant is sleeping in parent's arms
• B. Oxygen saturation is 96% on 100% oxygen via blow-by tubing
• C. Breath sounds are present and equal bilaterally in the lung bases
• D. Infant voided 34 mL

Answer: (C)

The main idea here is that symmetric, clear breath sounds in both lung bases show that air is moving through both lungs evenly, indicating effective ventilation and gas exchange. In an 8-month-old, this symmetry means there isn’t a focal problem like localized airway obstruction, collapse, or consolidation, and it supports a stable respiratory status. While other signs can be reassuring in some contexts, they’re less definitive: resting in a caregiver’s arms doesn’t guarantee stability and can mask distress, needing high oxygen support with a saturational reading even while receiving 100% O2 suggests ongoing significant impairment, and urine output doesn’t reflect how well the lungs are ventilating.

The main idea here is that symmetric, clear breath sounds in both lung bases show that air is moving through both lungs evenly, indicating effective ventilation and gas exchange. In an 8-month-old, this symmetry means there isn’t a focal problem like localized airway obstruction, collapse, or consolidation, and it supports a stable respiratory status. While other signs can be reassuring in some contexts, they’re less definitive: resting in a caregiver’s arms doesn’t guarantee stability and can mask distress, needing high oxygen support with a saturational reading even while receiving 100% O2 suggests ongoing significant impairment, and urine output doesn’t reflect how well the lungs are ventilating.