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[Pregnancy with testicular spermatozoa]
R Sergio Pasqualini1, C Quintans, G R Valzacchi
1Halitus Instituto Médico, Buenos Aires, Argentina.
Medicina
|January 1, 1995
Summary
Microsurgical epididymal sperm aspiration and testicular biopsy successfully retrieved sperm for intracytoplasmic sperm injection (ICSI) in a patient with congenital vas deferens agenesis, leading to a successful pregnancy via in vitro fertilization (IVF).
Area of Science:
- Reproductive Medicine
- Andrology
- Infertility Treatment
Background:
- Congenital absence of the vas deferens presents a significant challenge for male fertility.
- Assisted reproductive technologies offer potential solutions for azoospermic or severely oligozoospermic individuals.
Observation:
- Sperm retrieval was attempted via microsurgical epididymal sperm aspiration, but no epididymis was found.
- Testicular biopsy was performed, yielding a limited number of sperm suitable for ICSI.
Findings:
- Six out of 18 retrieved oocytes showed normal fertilization after ICSI.
- Four embryos developed, with three transferred at the 8-cell stage and one at the 6-cell stage after zona drilling.
- A positive pregnancy test (HCG beta subunit) and subsequent ultrasound confirmed a viable single embryo.
Implications:
- Testicular sperm extraction can be a viable alternative when epididymal sperm aspiration is not feasible.
- Successful ICSI and embryo transfer can lead to pregnancy in cases of congenital vas deferens agenesis.
- This case highlights the importance of advanced sperm retrieval and assisted reproductive techniques in managing male infertility.