obesity-congress-2016_posters-accepted-abstracts

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Volume 6, Issue 4(Suppl) J Obes Weight Loss Ther
ISSN: 2165-7904 JOWT, an open access journal
Page 59
Obesity Congress 2016
August 08-10, 2016
conferenceseries.com
August 08-10, 2016 Toronto, Canada
6th World Congress on
Obesity
J Obes Weight Loss Ther 2016, 6:4(Suppl)
Contribution of prepregnancy weight and gestational weight gain to adverse pregnancy outcomes in
Canada
Susie Dzakpasu
Public Health Agency of Canada, Canada
Prepregnancy body mass index (BMI) and gestational weight gain (GWG) are associated with adverse pregnancy outcomes such
as caesarean birth, preterm birth (PTB), small-for-gestational age (SGA) and large-for-gestational age (LGA) birth. Overweight
and obese women, in particular, are known to be at increased risk of adverse prgnancy outomes. Data from the Canadian Maternity
Experiences Survey – a nationally representative sample of women who had a singleton live birth in 2005-2006 were used to estimate
the contribution of prepregnancy BMI and GWG to selected adverse pregnancy outcomes in Canada. From adjusted odds ratios, we
calculated population attributable fractions to estimate the contribution of BMI and GWG to cesarean birth, PTB, SGA and LGA
births. Prior to pregnancy, 5.9%, 20.9% and 13.3% of women were underweight, overweight and obese respectively; and during
pregnancy 18.1% gained below the recommended weight while almost one-half (48.8%) gained above the recommended weight.
Among women, overweight or obese BMI or excess GWG contributed to one in five (20.2%) caesarean births. Among newborns,
above recommended GWG contributed to 18.2% of PTB, while underweight BMI and below recommended GWG each contributed
to less than 5% of PTB. Below recommended GWG contributed more (9.2%) to SGA births than underweight BMI (5.3%). And,
above recommended GWG contributed more (15.9%) to LGA births than being overweight (6.5%) or obese (8.9%). In conclusion,
maternal weight contributes significantly to the occurrence of adverse pregnancy outcomes in Canada. Strategies aimed at reducing
adverse pregnancy outcomes must include promoting healthy BMI prior to conception and recommended weight gain throughout
pregnancy.