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• W2141666049 abstract "No AccessJournal of UrologyAdult Urology1 Feb 2013A Comparison of Models for Predicting Sperm Retrieval Before Microdissection Testicular Sperm Extraction in Men with Nonobstructive Azoospermia Ranjith Ramasamy, Wendy O. Padilla, E. Charles Osterberg, Abhishek Srivastava, Jennifer E. Reifsnyder, Craig Niederberger, and Peter N. Schlegel Ranjith RamasamyRanjith Ramasamy More articles by this author , Wendy O. PadillaWendy O. Padilla More articles by this author , E. Charles OsterbergE. Charles Osterberg More articles by this author , Abhishek SrivastavaAbhishek Srivastava More articles by this author , Jennifer E. ReifsnyderJennifer E. Reifsnyder More articles by this author , Craig NiederbergerCraig Niederberger Financial interest and/or other relationship with NexHand, Global Advanced Medical Care, American Society for Reproductive Medicine and American Urological Association. More articles by this author , and Peter N. SchlegelPeter N. Schlegel More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2012.09.038AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: We developed an artificial neural network and nomogram using readily available clinical features to model the chance of identifying sperm with microdissection testicular sperm extraction by readily available preoperative clinical parameters for men with nonobstructive azoospermia. Materials and Methods: We reviewed the records of 1,026 men who underwent microdissection testicular sperm extraction. Patient age, follicle-stimulating hormone level, testicular volume, history of cryptorchidism, Klinefelter syndrome and presence of varicocele were included in the models. For the artificial neural network the data set was divided randomly into a training set (75%) and a test set (25%) with n1/n2 cross validation used to evaluate model accuracy, and then modeled with a neural computational system. In addition, a nomogram with calibration plots was developed to predict sperm retrieval with microdissection testicular sperm extraction. We compared these models to logistic regression. Results: The ROC area for the neural computational system in the test set was 0.641. The neural network correctly predicted the outcome in 152 of the 256 test set patients (59.4%). The nomogram AUC was 0.59 and adequately calibrated. Multivariable logistic regression demonstrated patient age, history of Klinefelter syndrome and cryptorchidism to be significant predictors of sperm retrieval (p <0.05). However, follicle-stimulating hormone and testicular volume were not significant by internal validation. Conclusions: We modeled a combination of well described preoperative clinical parameters to predict sperm retrieval using a neural computational system and nomogram with acceptable predictive values. The generalizability of these findings requires external validation. References 1 : Serum levels of inhibin B and follicle-stimulating hormone may predict successful sperm retrieval in men with azoospermia who are undergoing testicular sperm extraction. Fertil Steril2002; 78: 1195. Google Scholar 2 : Serum inhibin B may be a reliable marker of the presence of testicular spermatozoa in patients with nonobstructive azoospermia. Fertil Steril2001; 76: 1124. Google Scholar 3 : Establishment of predictive variables associated with testicular sperm retrieval in men with non-obstructive azoospermia. Hum Reprod1999; 14: 1005. 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Link, Google Scholar 17 : Seminal plasma anti-Mullerian hormone level correlates with semen parameters but does not predict success of testicular sperm extraction (TESE). Asian J Androl2007; 9: 265. Google Scholar 18 : Can serum Inhibin B and FSH levels, testicular histology and volume predict the outcome of testicular sperm extraction in patients with non-obstructive azoospermia?. Int Urol Nephrol2006; 38: 629. Google Scholar 19 : Can biological or clinical parameters predict testicular sperm recovery in 47, XXY Klinefelter's syndrome patients?. Hum Reprod2004; 19: 1135. Google Scholar 20 : Serum inhibin B cannot predict testicular sperm retrieval in patients with non-obstructive azoospermia. Hum Reprod2002; 17: 971. Google Scholar 21 : High serum FSH levels in men with nonobstructive azoospermia does not affect success of microdissection testicular sperm extraction. Fertil Steril2009; 92: 590. Google Scholar Departments of Urology, New York-Presbyterian Hospital, Weill Cornell Medical College, New York, New York, and University of Illinois at Chicago (WOP, CN), Chicago, Illinois© 2013 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetailsCited byNiederberger C (2020) Re: Fertility-Enhancing Male Reproductive Surgery: Glimpses into the Past and Thoughts for the FutureJournal of Urology, VOL. 203, NO. 6, (1046-1046), Online publication date: 1-Jun-2020.Niederberger C (2018) Re: How Successful is TESE-ICSI in Couples with Non-Obstructive Azoospermia?Journal of Urology, VOL. 195, NO. 3, (715-717), Online publication date: 1-Mar-2016.Niederberger C (2018) Re: Comparison of Microdissection Testicular Sperm Extraction, Conventional Testicular Sperm Extraction, and Testicular Sperm Aspiration for Nonobstructive Azoospermia: A Systematic Review and Meta-AnalysisJournal of Urology, VOL. 195, NO. 5, (1564-1566), Online publication date: 1-May-2016.Osterberg E, Laudano M, Ramasamy R, Sterling J, Robinson B, Goldstein M, Li P, Haka A and Schlegel P (2018) Identification of Spermatogenesis in a Rat Sertoli-Cell Only Model Using Raman Spectroscopy: A Feasibility StudyJournal of Urology, VOL. 192, NO. 2, (607-612), Online publication date: 1-Aug-2014. Volume 189Issue 2February 2013Page: 638-642 Advertisement Copyright & Permissions© 2013 by American Urological Association Education and Research, Inc.Keywordssperm retrievalnomogramstestisneural networks (computer)spermatozoaMetricsAuthor Information Ranjith Ramasamy More articles by this author Wendy O. Padilla More articles by this author E. Charles Osterberg More articles by this author Abhishek Srivastava More articles by this author Jennifer E. Reifsnyder More articles by this author Craig Niederberger Financial interest and/or other relationship with NexHand, Global Advanced Medical Care, American Society for Reproductive Medicine and American Urological Association. More articles by this author Peter N. Schlegel More articles by this author Expand All Advertisement PDF downloadLoading ..." @default.
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