Authors

Richard P. Dickey, M.D., Ph.D., Xu Xiong, M.D., Dr.P.H., Rebekah E. Gee, M.D., M.P.H., Gabriella Pridjian, M.D.

Volume 97, Issue 2 , Pages 349-354

Abstract

Objective:

To examine the effect of height, weight, and body mass index (BMI) on the risk of preterm birth of singleton and twin pregnancies conceived by vitro fertilization (IVF).

Design:

Retrospective cohort study using 2006–2008 data from the Society for Reproductive Technology Clinic Outcome Reporting System (SART CORS).

Setting:

SART-associated assisted reproductive technology programs.

Patient(s):

56,556 singleton and 23,804 twin live births resulting from fresh nondonor IVF cycles.

Intervention(s):

None.

Main Outcome Measure(s):

Rates of very early preterm (VEPTB; 35 kg/m2) twins were associated with a threefold increased risk of VEPTB (6.1% vs. 2.0%) and a twofold increased risk of VPTB (11.5% vs. 5.9%) compared with women of normal weight (BMI 18.4–24.9 kg/m2).

Conclusion(s):

Obesity and short stature significantly increase the risk of VEPTB and VPTB in twins conceived by IVF.

Read the full text at: http://www.fertstert.org/article/S0015-0282(11)02793-2/fulltext