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The Impact of Gestational Weight Gain on risk of Obstructive Sleep Apnea
Abstract Number: SAT-19
Abstract Type: Original Research
To determine whether the amount of gestational weight gain or adherence to Institute of Medicine(IOM) gestational weight gain guidelines impacts the risk of testing or screening positive for obstructive sleep apnea (OSA).
This is a secondary analysis of a prospective cohort using overnight Watch-PAT200® to diagnose OSA. Women analyzed were at 32-35 6/7 weeks gestation, noted to have an anterior or posterior placenta and delivered at Forsyth Medical Center. OSA was defined as an apnea-hypopnea index (AHI) of ≥ 5. Minimum and average O2 saturation, responses to the Berlin questionnaire, STOP BANG scores, Mallampati score, medical and obstetric data were measured or abstracted. The hypothesis that women who have a larger gestational weight gain have an increased risk for screening or testing positive for OSA in the third trimester was tested using a Students T-test. Linear regression analysis was used to evaluate the relationship between gestational weight gain and minimum or average oxygen saturation values as measured by pulse oximeter during overnight Watch-PAT200® study.
Results: 73 women had complete sleep studies and screening data. Demographics were similar between groups. There was no difference in gestational weight gain in our cohort of women due to screening positive for OSA by Berlin Questionnaire (p = 0.15), STOP BANG Screening (p = 0.62), or Mallampati Score (p = 0.10). Additionally, there was no difference in gestational weight gain based on objective OSA diagnosis (p = 0.51) (Figure 1). There was no correlation between gestational weight gain and mean (p=0.17) or minimum (p=0.42) oxygen saturation during overnight Watch-PAT200® study in the third trimester.
In our cohort, no relationship was found between gestational weight gain and either screening or testing positive for obstructive sleep apnea in the third trimester. Additionally there were no differences in mean or minimum oxygen saturation levels during an overnight sleep study based on gestational weight gain.