Sperm recovery from urine in men with retrograde ejaculation

Area of Science:

• Reproductive Medicine
• Urology

Background:

• Retrograde ejaculation (RE) involves semen flowing backward into the bladder during ejaculation.
• Standard ejaculate analysis may not detect RE, leading to potential misdiagnosis of infertility.
• Invasive sperm retrieval methods may be unnecessarily employed in managing RE-related infertility.

Purpose of the Study:

• To define retrograde ejaculation (RE) and outline diagnostic methods.
• To describe sperm detection, preparation, and retrieval from post-ejaculatory urine (PEU).
• To highlight the role of PEU analysis in assisted reproductive techniques (ART).

Main Methods:

• Diagnosis of RE relies on detecting spermatozoa in post-ejaculatory urine (PEU).
• Analysis of PEU is crucial for patients with aspermia or oligozoospermia and low/normal seminal volume.
• Literature review on diagnostic criteria for PEU and its limitations.

Main Results:

• Sperm in PEU can confirm RE, though diagnostic criteria lack consensus.
• Limited literature exists on PEU analysis for RE diagnosis.
• Accurate RE diagnosis enables sperm recovery from PEU for ART.

Conclusions:

• RE diagnosis is essential for infertile patients with suspected retrograde ejaculation.
• Analysis of PEU is a key diagnostic tool for RE.
• Proper interpretation of PEU results facilitates sperm retrieval for ART, avoiding invasive procedures.