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Related Experiment Videos

Pregnancy rates in relation to time intervals between repeat sperm-retrieval procedures.

J Fedder1, A Gabrielsen, K Petersen

  • 1The Fertility Clinic Ciconia, Højbjerg, Denmark.

Archives of Andrology
|April 12, 2001
PubMed
Summary

Shorter intervals (3 months) between sperm retrieval procedures optimize pregnancy rates in azoospermic men. Longer intervals did not improve sperm motility or pregnancy success, and may decrease success rates.

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Correction: Complete or partial loss of the Y chromosome in an unselected cohort of 865 non-vasectomized, azoospermic men.

Basic and clinical andrology·2024

Area of Science:

  • Reproductive Medicine
  • Andrology
  • Urology

Background:

  • Azoospermia affects male fertility, necessitating sperm retrieval for assisted reproductive technologies.
  • Repeat sperm retrieval procedures are common in managing azoospermia.

Purpose of the Study:

  • To evaluate the impact of intervals between repeat sperm retrieval procedures on pregnancy rates.
  • To compare the effectiveness of different sperm retrieval techniques (PESA, TESA, TESE) in azoospermic men.

Main Methods:

  • Analysis of 76 repeat sperm retrieval procedures in 47 azoospermic men.
  • Evaluation of outcomes based on intervals between procedures (less than 90 days vs. more than 180 days).
  • Comparison of pregnancy rates achieved with Percutaneous Epididymal Sperm Aspiration (PESA), Testicular Sperm Aspiration (TESA), and Testicular Sperm Extraction (TESE).

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Main Results:

  • Increasing the interval between sperm retrievals beyond 90 days did not enhance sperm motility or pregnancy rates.
  • Pregnancy rates declined from 50% with intervals <90 days to 25% with intervals >180 days.
  • Pregnancy rates were significantly higher with PESA (48%) and TESA (57%) compared to TESE (27%) when performed as the last procedure (p < .05).

Conclusions:

  • Sperm retrieval procedures for obstructive azoospermia can be performed at 3-month intervals to maximize pregnancy rates.
  • Epididymal aspiration techniques (PESA/TESA) may be preferable to testicular extraction (TESE) for achieving optimal pregnancy outcomes in azoospermic men.