Does varicocele repair improve IVF outcomes?

[Verified against AUA/ASRM Male Infertility Guideline 2021] Three separate recommendations, and they diverge sharply by scenario. Palpable varicocele with abnormal semen parameters. Surgical varicocelectomy should be considered in men attempting to conceive who have palpable varicocele(s), infertility and abnormal semen parameters — except for azoospermic men (Moderate Recommendation, Evidence Grade B). Non-palpable varicocele found on imaging. Clinicians should NOT recommend varicocelectomy for men with non-palpable varicoceles detected solely by imaging (STRONG Recommendation, Evidence Grade C). Meta-analysis of subclinical varicocele repair showed no demonstrable benefit in pregnancy or bulk semen parameters, beyond a possible small numerical effect on progressive motility unlikely to be clinically important. That second point deserves emphasis: incidental varicoceles on scrotal ultrasound are common, and repairing them is a recommendation the guideline grades as strong against. Non-obstructive azoospermia with clinical varicocele. Couples should be informed of the absence of definitive evidence supporting varicocele repair prior to ART (Expert Opinion). The supporting data are sobering — return of adequate motile sperm to the ejaculate sufficient to avoid surgical retrieval occurred in only 9.6% of NOA men after clinical varicocele repair. For comparison, up to 35% of men previously thought azoospermic had at least rare sperm detected on extended search of the centrifuged pellet, with no intervention at all. Practical consideration the guideline raises explicitly: varicocele repair defers ART by at least six months. In an older female partner that delay may cost more than the repair gains.