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Comparison of Pregnancy, Implantation, and Multiple Gestation Rates for Day 3 Versus Day 5 Embryo Transfers

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Abstract

Purpose : To compare pregnancy, implantation, and multiple gestation rates resulting from day 3 and day 5 embryo transfers after in vitro fertilization emphasizing a subset of patients who met criteria for day 5 transfer but elected to undergo day 3 transfer.

Method : A retrospective analysis of day 3 and day 5 embryo transfers from January 2001 to June 2002 were evaluated in a community teaching hospital setting. A total of 331 patients ≤40 years old were included. Using Student's t test, χ2test, and Fisher's exact test, we compared the pregnancy, implantation, and multiple gestation rates.

Results : Pregnancy, implantation, and multiple gestation rates were not significantly different between the subgroup who met criteria for day 5 embryo transfer but elected day 3 transfer. There was no significant difference between similar parameters in the overall comparison of day 3 versus day 5 embryo transfers.

Conclusions : Blastocyst transfers have similar multiple gestation rates, pregnancy rates, and implantation rates when compared to day 3 embryo transfers.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, Abington Memorial Hospital, Abington, Pennsylvania

    Stephanie J. Estes, Stephen G. Somkuti, Jay S. Schinfeld & Larry I. Barmat

  2. Toll Center for Reproductive Sciences, Abington Memorial Hospital, Abington, Pennsylvania, USA

    Linda M. Hoover, Scott E. Smith, Stephen G. Somkuti, Jay S. Schinfeld & Larry I. Barmat

Authors
  1. Stephanie J. Estes
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  2. Linda M. Hoover
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  3. Scott E. Smith
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  4. Stephen G. Somkuti
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  5. Jay S. Schinfeld
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  6. Larry I. Barmat
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Estes, S.J., Hoover, L.M., Smith, S.E. et al. Comparison of Pregnancy, Implantation, and Multiple Gestation Rates for Day 3 Versus Day 5 Embryo Transfers. J Assist Reprod Genet 20, 409–412 (2003). https://doi.org/10.1023/A:1026240827476

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  • DOI: https://doi.org/10.1023/A:1026240827476

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