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A randomized, prospective study comparing laser-assisted hatching and assisted hatching using acidified medium.

Susan E Lanzendorf1, Valerie S Ratts, Kelle H Moley

  • 1Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63108, USA. lanzendorfs@wustl.edu

Fertility and Sterility
|January 9, 2007
PubMed
Summary

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Laser-assisted hatching and hatching with acidified medium showed similar clinical outcomes in IVF patients. Day 5 embryo transfers demonstrated a higher implantation rate compared to both assisted hatching methods.

Area of Science:

  • Reproductive Medicine
  • In Vitro Fertilization (IVF)
  • Embryology

Background:

  • Assisted hatching is a technique used in IVF to improve embryo implantation.
  • Two common methods include laser-assisted hatching and hatching with acidified medium.

Purpose of the Study:

  • To compare the clinical outcomes of laser-assisted hatching versus acidified medium hatching in IVF.
  • To evaluate implantation, clinical pregnancy, ongoing pregnancy, and multiple pregnancy rates.

Main Methods:

  • A randomized, prospective, double-blinded study was conducted at a university-based IVF center.
  • 159 patient cycles were analyzed, comparing laser-assisted hatching (n=57), acidified medium hatching (n=54), unhatched thin zona embryos (n=8), and Day 5 transfers (n=40).

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Main Results:

  • No significant differences in clinical, ongoing, or multiple pregnancy rates were observed between laser-assisted hatching and acidified medium groups.
  • Day 5 embryo transfers showed a significantly higher implantation rate compared to both laser and acidified medium assisted hatching groups.

Conclusions:

  • Laser-assisted hatching is a safe and rapid method for assisted hatching in IVF.
  • Laser-assisted hatching did not negatively impact patient care compared to acidified medium hatching.