Abstract
Children with cleft lip/palate are usually faced with upper airway problems after surgical repair. The severity of upper airway obstruction is more likely associated with the age and preoperative diagnosis of obstructive sleep apnea (OSA). This study aimed to investigate the severity of OSA in toddlers before palatoplasty from the perspective of polysomnography. In this retrospective cohort study, 97 children with unrepaired cleft palate and habitual prone sleeping were identified with a mean age of 1.6 years (SD 0.6) and divided into 2 age groups (1.5 year or younger and older than 1.5 year). Detailed information was collected including demographics, sleep parameters, and respiratory disturbances. Polysomnography results showed these children were at high risks of OSA with averagely moderate severity at night during their early childhood [apnea-hypopnea index 7.2±3.2 events/hour; obstructive apnea index (OAI) 6.5±2.8 events/hour]. Positional OAI was greatly lower in prone than that in laterals or in supine. Far more sleep time was spent in prone than in supine (42.9%±42.2% versus 8.5%±15.7%), which were consistent with parental reporting of prone sleeping habits. There were no significant differences found between the 2 age groups in respiratory disturbances such as apnea-hypopnea index, OAI, mean oxygen saturation, and nadir oxygen saturation ( P =0.097-0.988). Thus, prone sleeping with a history of snoring might be indicators for early screening for OSA in the cleft population. Adequate attention should be paid to their upper airway and, if available, overnight polysomnography should be performed to ascertain their potential respiratory problems before repair surgery.
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