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Does Varicocele Repair Improve Conventional Semen Parameters? A Meta-Analytic Study of Before-After Data

  • Global Andrology Forum
  • University of Catania
  • Cleveland Clinic Foundation
  • Lilavati Hospital and Research Center
  • King Abdulaziz University
  • Minia University
  • CHI de Poissy-St-Germain-en-Laye
  • Université Paris-Saclay
  • Sohag University
  • Selcuk University
  • Henry Ford Health System
  • Westlake IVF
  • University of Health Sciences
  • Mansoura University
  • Farwaniya Hospital
  • Sabah Al-Ahmad Cardia Center
  • Loma Linda University Health
  • Başakşehir Çam and Sakura City Hospital
  • Universiti Teknologi MARA
  • Trinity Health/Mercy Health
  • Yokohama City University
  • Imperial College London
  • University of the Western Cape
  • Marche Polytechnic University
  • Lund University
  • Hope Generation Foundation
  • University of Turin
  • IdISSC
  • AIG Hospitals
  • University of Massachusetts Medical School
  • Binh Dan Hospital
  • Pham Ngoc Thach University of Medicine
  • University of Indonesia
  • Next Fertility Procrea
  • Istanbul Medipol Mega University Hospital
  • Innsbruck Medical University
  • Viet Duc University Hospital
  • Vietnam National University, Hanoi
  • McGill University
  • Cairo University
  • CSIR - Central Drug Research Institute
  • Fundação Universitaria do ABC, Faculdade de Medicina do ABC
  • Peking University
  • University of Rostock
  • Hamad Medical Corporation
  • Weil Cornell School of Medicine
  • Aristotle University of Thessaloniki
  • BYL Nair Charitable Hospital & TN Medical College
  • Apollo Hospitals Group
  • Kobe University
  • Istanbul University
  • Burjeel Hospital
  • Ege University
  • Urocentre Urology Clinic
  • Lithuanian University of Health Sciences
  • Mustafa Kemal University
  • Astghik Medical Center
  • Men's Health Melbourne
  • The University of Melbourne Department of Surgery
  • Western Health
  • University of Queensland
  • Hospital Israelita Albert Einstein
  • Universidade Federal do Paraná
  • University of Ioannina
  • SCM Clinic and Hospital
  • Gadjah Mada University
  • Padjadjaran University
  • Juntendo University
  • Nagano Red Cross Hospital
  • Ibn Zohr University
  • Elang Medika Corpora Hospital
  • University of Santo Tomas
  • Pusan National University
  • SENSART Clinic
  • Baskent University
  • Ankara University
  • Hammersmith Hospital
  • Charing Cross Hospital
  • Case Western Reserve University
  • Southern Illinois University
  • University of Toledo
  • Taylor's University Malaysia
  • Instituto De Ginecologia y Fertilidad (IFER)
  • AndroOne Men’s Health Clinic
  • Ministry of Health and Family Welfare
  • Wahidin Sudirohusodo Hospital
  • King Saud University
  • Biruni Universitesi
  • Western General Hospital
  • University of Texas Health Science Center at Houston
  • University of Texas MD Anderson Cancer Center
  • Dr. Dradjat Hospital
  • Medical University Hospital Hanoi
  • Clarity Health
  • Ideia Fértil Institute
  • Locus Medicus S.A.
  • SMS Medical College
  • Universitas Udayana
  • Jindal Hospital
  • Prof R.D. Kandou Hospital
  • Tehran University of Medical Sciences
  • University of Illinois at Chicago
  • University of Foggia
  • Lebanese University
  • Military Hospital Mohammed V
  • Sultan Qaboos University
  • Urology Clinic
  • Sefako Makgatho Health Sciences University
  • The Catholic University of Korea
  • National Cheng Kung University
  • Université de Tunis El Manar
  • Fakih IVF Fertility Center
  • Oxford University Hospitals NHS Foundation Trust
  • Global Andrology Forum
  • University of Lusaka
  • Shahroud University of Medical Sciences
  • IVF Jakarta - YPK Mandiri
  • Tam Anh General Hospital
  • Hanoi Obstetric and Gynecology Hospital
  • Universitas Airlangga
  • General Hospital
  • Kafkas University
  • Jaslok Hospital and Research Centre
  • Cure & SK Hospital
  • Khesar Gyalpo University of Medical Sciences of Bhutan
  • Fundacio Puigvert
  • Instituto de Ciencias en Reproducción Humana VIDA
  • Enugu State University of Science and Technology, Enugu
  • Hospital Angkatan Tentera Tuanku Mizan
  • National University Hospital

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Purpose: The purpose of this meta-analysis is to study the impact of varicocele repair in the largest cohort of infertile males with clinical varicocele by including all available studies, with no language restrictions, comparing intra-person conventional semen parameters before and after the repair of varicoceles. Materials and Methods: The meta-analysis was performed according to PRISMA-P and MOOSE guidelines. A systematic search was performed in Scopus, PubMed, Cochrane, and Embase databases. Eligible studies were selected according to the PICOS model (Population: infertile male patients with clinical varicocele; Intervention: varicocele repair; Comparison: intra-person before-after varicocele repair; Outcome: conventional semen parameters; Study type: randomized controlled trials [RCTs], observational and case-control studies). Results: Out of 1,632 screened abstracts, 351 articles (23 RCTs, 292 observational, and 36 case-control studies) were included in the quantitative analysis. The before-and-after analysis showed significant improvements in all semen parameters after varicocele repair (except sperm vitality); semen volume: standardized mean difference (SMD) 0.203, 95% CI: 0.129–0.278; p<0.001; I2=83.62%, Egger’s p=0.3329; sperm concentration: SMD 1.590, 95% CI: 1.474–1.706; p<0.001; I2=97.86%, Egger’s p<0.0001; total sperm count: SMD 1.824, 95% CI: 1.526–2.121; p<0.001; I2=97.88%, Egger’s p=0.0063; total motile sperm count: SMD 1.643, 95% CI: 1.318–1.968; p<0.001; I2=98.65%, Egger’s p=0.0003; progressive sperm motility: SMD 1.845, 95% CI: 1.537%–2.153%; p<0.001; I2=98.97%, Egger’s p<0.0001; total sperm motility: SMD 1.613, 95% CI 1.467%–1.759%; p<0.001; l2=97.98%, Egger’s p<0.001; sperm morphology: SMD 1.066, 95% CI 0.992%–1.211%; p<0.001; I2=97.87%, Egger’s p=0.1864. Conclusions: The current meta-analysis is the largest to date using paired analysis on varicocele patients. In the current meta-analysis, almost all conventional semen parameters improved significantly following varicocele repair in infertile patients with clinical varicocele.

Original languageEnglish
JournalWorld Journal of Men?s Health
Volume41
DOIs
StatePublished - 2023

Keywords

  • Controlled before-after studies
  • Infertility, male
  • Meta-analysis
  • Varicocele

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