A nurse on a pediatric unit is reviewing the electronic medical record of an infant Click to highlight the findings that indicate worsening in the infant's condition. To deselect a finding, click on the finding again. Nurses' Notes 0500: Infant is sleeping in guardian's arms. Mucous membranes are pink for ethnic background. Breath sounds with bilateral wheezes on inspiration and expiration. Moderate substernal subcostal and intercostal retractions are present. Nasal flaring noted Vital Signs 0500: Heart rate 168/min Respiratory rate 54/min Oxygen saturation 95% on 2 L oxygen via nasal cannula

The clinical presentation of a 7-month-old with a paroxysmal cough, thick mucus, and wheezing is highly suggestive of bronchiolitis, most commonly caused by Respiratory Syncytial Virus (RSV). In infants, respiratory distress can progress rapidly due to their small airways and high metabolic demands. Worsening condition is identified by an increase in work of breathing (WOB), rising compensatory heart and respiratory rates, and a declining ability to maintain oxygenation despite the introduction of supplemental oxygen. Rationale for worsening findings: • Bilateral wheezes on inspiration and expiration: Previously, wheezing was noted only on auscultation, but now it is present throughout both inspiration and expiration, indicating increased airway narrowing. This suggests progression of bronchiolar inflammation and obstruction. Biphasic wheezing is a sign of worsening airflow limitation. • Moderate substernal, subcostal, and intercostal retractions: Increasing retractions indicate that the infant is using accessory muscles more intensely to maintain ventilation. Progression from mild to moderate retractions reflects worsening airway obstruction and increased respiratory effort. This suggests fatigue and declining respiratory efficiency. • Respiratory rate 54/min: An increasing respiratory rate indicates worsening respiratory distress and decreased oxygen exchange efficiency. Infants compensate for hypoxia by breathing faster, but persistent tachypnea suggests fatigue and impending respiratory failure. The rise from 48/min to 54/min demonstrates progression of illness severity. • Oxygen saturation 95% on 2 L oxygen via nasal cannula: A decreasing oxygen saturation despite supplemental oxygen indicates worsening gas exchange. The need for oxygen therapy itself reflects progression from mild to moderate respiratory compromise. A drop from 97% on room air to 95% on oxygen shows reduced respiratory efficiency. Rationale for incorrect findings: • Mucous membranes are pink for ethnic background: This finding remains consistent with adequate oxygenation and perfusion. There is no progression to pallor or cyanosis, which would indicate worsening hypoxia. Stability in mucous membrane color suggests that oxygen delivery is still being maintained. Therefore, this is not an indicator of clinical decline.