Prevalence of symptoms and risk of obstructive sleep apnea in Saudi pregnant women

BACKGROUND: This case-control study aimed to assess the prevalence of symptoms and risk of obstructive sleep apnea (OSA) among Saudi pregnant women. METHODS: The study included consecutive Saudi pregnant women attending the antenatal service between July 2015 and December 2016. Pregnant women were compared with an age-matched group of nonpregnant women. OSA symptoms and risk were assessed using a validated Arabic version of the Berlin questionnaire (BQ). RESULTS: The study included 742 pregnant women and 742 age-matched nonpregnant women. At the time of the survey, 8.2% were in the first trimester; 33.4% in the second trimester; and 58.4%in third trimester. Snoring was reported by 14% of pregnant women, and 5% reported breathing pauses during sleep. Based on the BQ stratification for risk of OSA, 19.3% of pregnant women and 16.6% of the control group were at high risk for OSA. A comparison between the high OSA-risk and low OSA-risk pregnant women revealed that the pregnant women in high risk group were older (30.9 ± 5.9 years vs. 29 ± 5.4 years, P = 0.001), had a higher body mass index (BMI) (34.3 ± 5.2 kg/m2 vs. 28.7 ± 5.8 kg/m2,P < 0.001), and higher parity (1.9 ± 2 vs. 1.5 ± 1.7, P = 0.020). A multivariate logistic regression analysis revealed the following independent variables, BMI (odds ratio [OR] 1.173 [95% confidence interval [CI] 1.129-1.219],P < 0.001), pregnancy-induced hypertension (OR 7.85 [95% CI 1.691-36.447], P = 0.013), and the presence of restless legs syndrome (OR 2.209 [95% CI 1.332-3.279],P < 0.001). CONCLUSIONS: OSA symptoms and risk were relatively common among Saudi pregnant women. Increasing the awareness among physicians about this association is essential to improve early detection of the disorder.