Mild nocturnal hypoxaemia and elevated pulse rate in infants with viral bronchiolitis: An oximetry-based study.

Current guidelines suggest that clinicians may not administer supplemental oxygen to infants with bronchiolitis if their peripheral capillary oxygen saturation of haemoglobin (SpO2 ) exceeds 90%. It has been argued that oxygen administration to achieve an SpO2 of more than 90% does not improve physiological function or clinical outcomes (1). Nevertheless, the pathophysiological and subclinical consequences of mild hypoxaemia in infants during sleep have not been studied.