Conclusion 
Obese pregnant women (BMI >35 kg/m2) are at risk of OSA, highly prevalent during pregnancy. Obstetric complications associated with OSA during pregnancy have been described but studies to define them more precisely remain necessary. The utility of treatment by CPAP during pregnancy has still not been studied. Management of obesity by lifestyle and dietary changes can be tried in these women preventively before conception, especially if other comorbidities are present (older age, chronic hypertension) to reduce the risk of OSA and of the obstetric complications that can be associated with it.