Abstract
Accumulating evidence indicates that varicocele repair improves sperm quality. However, longitudinal changes in sperm parameters and predictors of improved semen characteristics after surgery have not been fully investigated. We retrospectively reviewed data from 100 men who underwent microsurgical subinguinal varicocele repair at a single centre. Follow-up semen examinations were carried out at 3, 6 and 12months post-operatively. Logistic regression was used to identify predictors of early (3months) and late (≥6months) improvement in semen parameters after varicocele repair. At 3months post-operatively, 76.1% of the patients had improved total motile sperm counts, which continued to improve significantly up to 12months post-operatively (p=.016). When comparing changes in semen parameters between younger (<37years) and older (≥37years) men, post-operative improvements in sperm concentration and motility were greater among younger men. Multivariate analysis showed that younger age was associated with early (p=.043) and late (p=.010) post-operative improvement in total motile sperm count. Our findings indicate that early varicocele repair improved semen parameters after surgery.
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