Tubal selection for gamete intrafallopian transfer

Area of Science:

• Reproductive Medicine
• Infertility Treatment
• Assisted Reproductive Technologies

Background:

• Tubal selection for Gamete Intrafallopian Transfer (GIFT) is typically surgeon-dependent when both fallopian tubes appear normal.
• The impact of tubal transfer laterality relative to ovarian dominance on GIFT pregnancy rates remains unclear.

Purpose of the Study:

• To investigate whether the choice of fallopian tube for transfer in GIFT procedures influences clinical pregnancy rates in relation to ovarian dominance.
• To determine if aligning tubal transfer with the dominant ovary improves GIFT success.

Main Methods:

• Retrospective analysis of 144 GIFT procedures.
• Ovarian dominance defined sonographically by the ovary with the most follicles (mean diameter > 16 mm).
• Comparison of pregnancy rates for tubal transfers ipsilateral versus contralateral to the dominant ovary.

Main Results:

• The clinical pregnancy rate was significantly higher for GIFT transfers performed to the fallopian tube ipsilateral to the dominant ovary (0.414) compared to the contralateral tube (0.228).
• This observed difference was not attributable to patient characteristics or cycle performance variations.
• P-value for the difference was 0.042.

Conclusions:

• Transferring gametes to the fallopian tube ipsilateral to the dominant ovary is associated with significantly higher GIFT pregnancy rates.
• This suggests a potential strategy to optimize GIFT outcomes by performing tubal transfer on the side of greater follicular development.
• Surgical protocols for GIFT may benefit from considering ovarian dominance for improved efficacy.