title: The urodynamic status during psychogenic erection in a patient with a conus medullaris injury. Case report.
abstract: The urodynamic status of a 24 year old male patient with psychogenic erection who sustained a conus medullaris lesion from a burst fracture of the first lumbar vertebra is reported. During the initial measurement the external urinary sphincter pressure began to rise from the base pressure of 35 cm H2O 5 seconds after the beginning of audiovisual sexual stimulation and reached the peak of 110 cm H2O. In parallel, the bladder neck pressure gradually rose from its base pressure of 5 cm H2O to a maximal pressure of 115 cm H2O and then ejaculation occurred. The difference is no more than 5 cm H2O and this small difference in pressure inhibits retrograde ejaculation.
authors.affiliation: Department of Urology, School of Medicine, Chiba University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yasuda
authors.forename: T
authors.initials: T
authors.lastname: Yamanishi
authors.forename: T
authors.initials: T
authors.lastname: Hattori
authors.forename: T
authors.initials: T
authors.lastname: Ichikawa
authors.forename: H
authors.initials: H
authors.lastname: Kitahara
authors.forename: J
authors.initials: J
authors.lastname: Shimazaki
mesh_terms: D000328:Adult; D004542:Ejaculation / Q000187:drug effects / Q000502:physiology; D006145:Guanethidine / Q000494:pharmacology; D006801:Humans; D008159:Lumbar Vertebrae / Q000293:injuries*; D008297:Male; D010410:Penile Erection / Q000187:drug effects / Q000502:physiology*; D016103:Spinal Fractures / Q000150:complications*; D001743:Urinary Bladder / Q000503:physiopathology; D014563:Urodynamics / Q000187:drug effects / Q000502:physiology*; D015016:Yohimbine / Q000494:pharmacology
chemical_list: D015016:Yohimbine; D006145:Guanethidine