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A Nomogram Predicting Testicular Sperm Extraction Success in Men With Non-obstructive Azoospermia: A Multi-center

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A new nomogram predicts testicular sperm extraction (TESE) success in non-obstructive azoospermia (NOA). Key factors include testis volume and age, aiding fertility treatment planning for men with NOA.

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Area of Science:

  • Reproductive Medicine
  • Andrology
  • Urology

Background:

  • Non-obstructive azoospermia (NOA) affects male fertility, necessitating advanced reproductive techniques.
  • Testicular sperm extraction (TESE) is a surgical option for sperm retrieval in men with NOA.
  • Predicting TESE success pre-operatively is crucial for patient counseling and treatment planning.

Purpose of the Study:

  • To develop an efficient and user-friendly nomogram for predicting TESE success in men with NOA.
  • To identify significant pre-operative parameters associated with successful sperm retrieval during TESE.

Main Methods:

  • Retrospective analysis of data from 3093 men undergoing TESE for NOA.
  • Inclusion of demographic data, clinical parameters (testis volume, varicocele), hormonal levels (FSH, LH, testosterone), genetic factors, and surgical outcomes.
  • Development of a predictive nomogram based on significant pre-operative variables.

Main Results:

  • The overall sperm retrieval rate in TESE was 50.2%.
  • Significant factors influencing sperm retrieval included testis volume, history of varicocelectomy, chromosomal abnormalities, and Y-chromosome microdeletion.
  • Multivariate analysis identified older age and larger testis volume (>10 mL) as independently associated with successful sperm retrieval.

Conclusions:

  • High testis volume, older age, lower follicle-stimulating hormone (FSH), lower luteinizing hormone (LH), and higher testosterone levels are favorable for TESE success in NOA.
  • The developed nomogram effectively predicts TESE outcomes in men with NOA.
  • This tool can aid clinicians in managing and counseling patients with non-obstructive azoospermia.