Testicular Tissue Oxygen Pressure

No AccessJournal of UrologyInvestigative Urology1 Apr 1996Testicular Tissue Oxygen Pressure Theodor Klotz, Roland Vorreuther, Axel Heidenreich, Jurgen Zumbe, and Udo Engelmann Theodor KlotzTheodor Klotz More articles by this author , Roland VorreutherRoland Vorreuther More articles by this author , Axel HeidenreichAxel Heidenreich More articles by this author , Jurgen ZumbeJurgen Zumbe More articles by this author , and Udo EngelmannUdo Engelmann More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(01)66312-2AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: We evaluate the feasibility of continuous intratesticular tissue oxygen pressure (IT-pO2) measurement under various conditions. Materials and Methods: Flexible, polarographic microcatheter systems (1.5 F) for continuous pO2 measurements have been used. The measurements were conducted on 37 adult male albino rats. The probes could be placed intratesticularly under controlled temperatures by microsurgical techniques. The IT-pO2 of the ipsilateral and contralateral testicle was determined after unilateral torsion. Furthermore the influence of intratesticular temperature on IT-pO2 was determined. Results: Intratesticular pO2 was found to be 21 plus/minus 5 mm.Hg under normal conditions. Under complete ischemia, pO2 dropped within 3 to 5 minutes to a level of approximately 1 mm.Hg. A counterclockwise unilateral testicular torsion of 720 degrees led to a decrease of the IT-pO sub 2 within 5 to 7 minutes to 5 plus/minus 1.5 mm.Hg. After detorsion the IT-pO2 recovered within 15 minutes, while the IT-pO2 of the contralateral testicle remained unchanged. Simple surgical exposure of the testicle led to a reversible decrease of the intratesticular pO2 to 7 plus/minus 2.5 mm.Hg correlating with an intratesticular temperature decrease from approximately 31.5C to 23.5C. Conclusions: The measurements are feasible and may provide a continuous intraoperative assessment of intratesticular oxygen pressure. The contralateral IT-pO2 after unilateral torsion remained unchanged. The IT-pO2 and testicular blood flow depend, if the utilization of oxygen is unchanged, on intratesticular temperature. References 1 : Continuous recordings of oxygen pressure in the cerebrospinal fluid of cat, dog and man. Funktionsanal. Biolog. Systeme1989; 19: 211. Google Scholar 2 : Skeletal muscle pO sub 2 in patients with sepsis. Crit. Care Med.1994; 22: 640. Google Scholar 3 : Variabilitat des TcpO sub 2 bei wiederholter Messung an Patienten mit peripherer arterieller Verschlu beta krankheit. Vasa, suppl.1988; 23: 51. 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Abstract, Google Scholar Department of Urology, University of Cologne, Cologne, Germany.© 1996 by American Urological Association, Inc.FiguresReferencesRelatedDetails Volume 155Issue 4April 1996Page: 1488-1491 Advertisement Copyright & Permissions© 1996 by American Urological Association, Inc.MetricsAuthor Information Theodor Klotz More articles by this author Roland Vorreuther More articles by this author Axel Heidenreich More articles by this author Jurgen Zumbe More articles by this author Udo Engelmann More articles by this author Expand All Advertisement PDF downloadLoading ...