Detection of Sleep Apnea Syndrome (OSA) With Watch PAT 200 in Pregnant Women and Assessment of Impact of OSA on Intra-uterine Fetal Growth and Maternal Well-being

During pregnancy, obstructive sleep apnea (OSA) prevalence is estimated between 5% and 15% and is associated with maternal and fetal comorbidities such as preeclampsia, neonatal intensive care admission , fetal growth retardation , preterm birth but even if growing, literature is still relatively poor about this topic.

To date, there is no systematic screening of OSA performed in at-risk pregnant women (obesity, hypertension, diabetes, fetal growth retardation, suggestive symptoms), probably mainly because of polysomnography complexity and accessibility.

As in non pregnant woman, OSA must be treated adequately during pregnancy. Continuous positive airway pressure (CPAP) is the reference treatment for severe OSA. This device, by blowing air under pressure in upper airways, via a nasal of an oro-nasal mask, is able to alleviate the upper airway collapse responsible for the occurrence of obstructive sleep apnea. It has been proven to offer a survival benefit in patients with severe disease and to improve sleep quality, cardiovascular variables and health-related quality of life . CPAP have been shown to improve fetal well-being in pre-eclampsia .

Oral appliance can be an alternative for mild to moderate disease and in patients who do not tolerate CPAP. Positional counselling can be sufficient in case of mild to moderate positional OSA. Associated behavioural strategies (diet and exercise) are always recommended in case of excessive weight. Surgical treatments are dedicated to patients with specific anatomic problems but cannot be performed during pregancy.

Aim of the study: