Youth varicocele and varicocele treatment: a meta-analysis of semen outcomes.

Autor:	Nork JJ; Naval Medical Center San Diego, San Diego, California., Berger JH; Naval Medical Center San Diego, San Diego, California., Crain DS; Naval Medical Center San Diego, San Diego, California., Christman MS; Naval Medical Center San Diego, San Diego, California. Electronic address: matthew.christman@med.navy.mil.
Jazyk:	angličtina
Zdroj:	Fertility and sterility [Fertil Steril] 2014 Aug; Vol. 102 (2), pp. 381-387.e6. Date of Electronic Publication: 2014 Jun 04.
DOI:	10.1016/j.fertnstert.2014.04.049
Abstrakt:	Objective: To study youth who have a varicocele or are undergoing varicocele treatment, in relation to changes in semen, as measured by semen analysis (SA). Design: Meta-analysis of studies identified via a search of PubMed, Medline, and the Cochrane Library covering the last 40 years. Setting: Not applicable. Patient(s): Youth from studies that assessed the presence and/or treatment of varicocele with SA. Intervention(s): Selected studies were analyzed in two separate meta-analyses: one for the effect of varicocele on semen, as measured by SA (hypothesis #1), the other for the effect of treatment on semen, as measured by SA (hypothesis #2). Main Outcome Measure(s): A random-effects model was used to calculate weighted mean difference (WMD) of semen outcomes. Heterogeneity was calculated. Bias was assessed with funnel plots and Egger's test. Result(s): The initial literature search returned 1,180 potentially relevant articles. For hypothesis #1, 10 studies with a total of 357 varicocele and 427 control subjects were included. Sperm density, motility, and morphology were significantly decreased when associated with a varicocele, with a WMD of -24.0×10(6)/mL (95% confidence interval [CI; -39.5 to -8.6]), -7.5% (95% CI [-12.3% to -2.7%]), and -1.7% (95% CI [-2.4% to -1.1%]), respectively. Another 10 studies with 379 treated and 270 untreated subjects were analyzed for hypothesis #2. Sperm density and motility were significantly improved following treatment, with a WMD of 14.6×10(6)/mL (95% CI [7.1-22.1]) and 6.6% (95% CI [2.1%-11.2%]), respectively. Conclusion(s): The presence of varicocele in youth appears to negatively affect sperm density, motility, and morphology. Treatment appears to result in moderate improvement of sperm density and mild improvement in sperm motility. (Published by Elsevier Inc.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu