Referral practices and treatment of obstructive sleep apnea in pregnancies with obesity.

OBJECTIVE: Obstructive sleep apnea (OSA) affects maternal and neonatal health during pregnancy. This study aimed to identify characteristics and comorbidities associated with sleep clinic referral in high-risk pregnancies with Body Mass Index (BMI) ≥35 kg/m2 .

METHOD: Retrospective cohort study for individuals in a high-risk pregnancy clinic at a tertiary Australian hospital from 1 January to 31 December 2020 with BMI≥35 kg/m2 . The primary outcome measure was sleep clinic referral. Exposure data included multiple comorbidities and formal tools (Epworth Sleepiness Scale and STOP-BANG). Multivariable analysis was used to identify factors associated with referral. Descriptive data on barriers to diagnosis and treatment were collected.

RESULTS: Of 161 pregnant individuals, 38.5% were screened using formal tools and 13.7% were referred to sleep clinic. Having STOP-BANG performed was associated with sleep clinic referral (Odds Ratio: 18.04, 95% Confidence Interval:4.5-71.7, p  < 0.001). No clinical characteristics were associated with the likelihood of performing STOP-BANG. The COVID-19 pandemic was a treatment barrier for three individuals.

CONCLUSIONS: Current screening practices identify pregnant individuals with the highest pre-test probability of having OSA. Future research should evaluate real-world strategies to improve identification and management in this high-risk population.