The Persistent Respiratory Impact of Respiratory Syncytial Virus (RSV) Bronchiolitis in Infants

Our findings suggest that expiratory airway obstruction may persist despite clinical recovery in infants following RSV bronchiolitis. The lack of improvement in tidal breathing parameters, particularly tPTEF and tPTEF/tE, highlights the need for long-term follow-up. Moreover, greater disease severity was associated with more sustained impairment in lung function. These findings emphasize the importance of early detection, long-term monitoring, and preventive strategies to reduce the long-term respiratory consequences of RSV infection.