High and low respiratory rates before admission and low room air oxygen saturation were linked to a greater risk of apnea in children younger than 2 years hospitalized for bronchiolitis, according to a study in the journal Pediatrics. While the study confirmed other factors previously associated with inpatient sleep apnea, such as younger corrected age, low birth weight and history of apnea, researchers found that children with respiratory syncytial virus were no more likely to develop apnea than those infected with other viruses.

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