BackgroundClinical trial evidence supports the routine use of intermittent pulse oximetry in stabilized infants hospitalized with bronchiolitis. However, continuous pulse oximetry use is common.ObjectiveThis study aimed to understand the barriers and facilitators to de‐implement continuous pulse oximetry and implement intermittent pulse oximetry in infants hospitalized with stabilized bronchiolitis.MethodsThis multicentre qualitative study interviewed attending pediatricians, residents, nurses, respiratory therapists, and caregivers of infants hospitalized with bronchiolitis at hospitals in Ontario, Canada, to explore beliefs, attitudes, and experiences regarding pulse oximetry use in bronchiolitis management. Data were analyzed using thematic analysis to understand barriers and facilitators to practice change, mapped to the Consolidated Framework for Implementation Research (CFIR) domains.ResultsSixty‐seven participants from six hospitals were interviewed using individual interviews and focus groups. Healthcare providers emphasized the importance of identifying and understanding who is responsible for bedside pulse oximetry practice (physicians vs. nurses). Clinical experience, knowledge of guidelines, importance versus competing priorities, and the tensions among team members due to practice variation in monitoring, influenced monitoring practice. Nurses believed in the advantages of intermittent monitoring (reduced alarm fatigue, facilitation of timely discharges, and reduced workload). Clinicians identified ways to clarify indications for continuous monitoring (based on patient risk factors), versus indications to transition to intermittent monitoring (established oral feeding, sleeping without desaturations). Caregivers did not express a clear preference for monitoring type; rather, they described the need for clear communication around interpreting monitor readings, management decisions, and care transitions.ConclusionsUnderstanding professional roles, clarity around local practice standards and supporting families' understanding of pulse oximetry practice is essential for practice change. These findings may inform hospital quality improvement efforts to de‐implement continuous monitoring in bronchiolitis hospital care.