{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T03:20:59Z","timestamp":1792639259323,"version":"4.5.0"},"reference-count":19,"publisher":"Springer Science and Business Media LLC","issue":"1-2","license":[{"start":{"date-parts":[[2021,6,28]],"date-time":"2021-06-28T00:00:00Z","timestamp":1624838400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,6,28]],"date-time":"2021-06-28T00:00:00Z","timestamp":1624838400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Universit\u00e4tsklinikum Schleswig-Holstein - Campus Kiel"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Wien Klin Wochenschr"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:title>Summary<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>The suitability of laparoscopic varicocelectomy for assisted reproductive technology depends on the improvement of semen parameters. The present study analyzed the improvement of semen parameters following laparoscopic varicocele ligation.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Material and methods<\/jats:title>\n                <jats:p>A\u00a0retrospective study of the laparoscopic varicocele clippings at the Department of Urology of University Hospital of Kiel between the years 2007 and 2019 was conducted. The semen analyses according to WHO standards (sperm count, density, motility and morphology) were conducted before and 12\u00a0months after surgery. Screening for surgical complications took place at the time of the follow-up seminal analysis. Included were patients with oligozoospermia, asthenozoospermia and\/or teratozoospermia (group\u00a01, OAT) or with nonobstructive azoospermia (group\u00a02, NOA).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>This study included data of 27\u00a0patients and 22\u00a0patients presented preoperative OAT (81%, group\u00a01). Another 5\u00a0patients showed NOA (19%, group\u00a02). Data of group\u00a01 showed that semen parameters normalized in 32% of the patients after surgery. Significant improvement in total sperm count (<jats:italic>p<\/jats:italic>\u202f&lt;\u20090.005), sperm density (<jats:italic>p<\/jats:italic>\u202f&lt;\u20090.005) and total motile sperm count (<jats:italic>p<\/jats:italic>\u202f&lt;\u20090.005) was observed. No deterioration of semen parameters was observed. In group\u00a02 we detected spermatozoa in\u00a01 case in the postoperative ejaculate. None of the patients showed complications according to the Clavien-Dindo classification, postoperative hydrocele formation or recurrence of varicocele at the time of control spermiogram.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Laparoscopic varicocelectomy is a\u00a0valid therapeutic approach to improve semen parameters for further assisted reproductive techniques. Spermatogenesis may be induced for patients with NOA. Normalization of semen parameters can be achieved for patients with OAT.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00508-021-01897-w","type":"journal-article","created":{"date-parts":[[2021,6,28]],"date-time":"2021-06-28T12:02:44Z","timestamp":1624881764000},"page":"51-55","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Laparoscopic varicocelectomy in male infertility"],"prefix":"10.1007","volume":"134","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5191-6906","authenticated-orcid":false,"given":"Felix","family":"Seiler","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Kneissl","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudius","family":"Hamann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Klaus-Peter","family":"J\u00fcnemann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniar","family":"Osmonov","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,6,28]]},"reference":[{"key":"1897_CR1","doi-asserted-by":"publisher","first-page":"613","DOI":"10.1016\/S0015-0282(16)55809-9","volume":"59","author":"JI Gorelick","year":"1993","unstructured":"Gorelick\u00a0JI, Goldstein\u00a0M. 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