title: Urodynamic findings in young men with chronic lower urinary tract symptoms.
abstract: OBJECTIVE
  To assess frequency of urodynamic abnormalities in young men with chronic lower urinary tract symptoms (LUTS).
  
  
  METHODS
  We assessed 456 men (18-40 years old) with chronic LUTS. Those with the history of urogenital malignancies, neurological disease, urethral stricture or trauma, acute UTI, congenital urological disease, and diabetes mellitus were excluded. Patients were classified by special urodynamic diagnosis.
  
  
  RESULTS
  Mean patient age was 25.8  ±  5.9 years old and the mean symptom duration was 12.3 ±  3.2 months. Urodynamic studies showed bladder neck dysfunction in 96 of cases (21%), dysfunctional voiding in 69 (15.1%), detrusor overactivity in 62 (13.6%), small cystometric capacity in 49 (10.7%), and acontractile detrusor in 48 (10.5%), underactive detrusor in 11 (2.4%), low compliance in 18 (3.9%), detrusor overactivity plus acontractile detrusor in 6 (1.3%), low compliance plus small cystometric capacity in 5 (1.0%), detrusor overactivity plus small cystometric capacity together with low compliance in 4 (0.8%), low compliance plus Underactive detrusor in 3 (0.6%) and normal urodynamics in 85 (18.6%). Mean Q(max) in patients with bladder neck dysfunction, dysfunctional voiding, underactive detrusor, acontractile detrusor, underactive detrusor plus low compliance, and acontractile detrusor plus detrusor overactivity were lower than those of the other groups. Mean postvoid residues in patients with underactive detrusor, and underactive detrusor plus low compliance, were higher than those in the remaining groups. Positive four-glass test in patient with normal urodynamic was greater than those in the remaining groups.
  
  
  CONCLUSIONS
  A few clinical symptoms or noninvasive tests were useful in young men with chronic LUTS; hence, urodynamics are advised to make the correct diagnosis in this regard.
authors.affiliation: Shohada-e-Tajrish hospital, Shahid Beheshti University, M.C. (SBMU), Tehran, IR, Iran. karami_hosein@yahoo.com
authors.forename: Hossein
authors.initials: H
authors.lastname: Karami
authors.forename: Reza
authors.initials: R
authors.lastname: Valipour
authors.forename: Behzad
authors.initials: B
authors.lastname: Lotfi
authors.forename: Hooman
authors.initials: H
authors.lastname: Mokhtarpour
authors.forename: Abdolah
authors.initials: A
authors.lastname: Razi
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D003187:Compliance; D003950:Diagnostic Techniques, Urological; D006801:Humans; D007492:Iran; D059411:Lower Urinary Tract Symptoms / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D011237:Predictive Value of Tests; D001743:Urinary Bladder / Q000503:physiopathology*; D053201:Urinary Bladder, Overactive / Q000175:diagnosis* / Q000503:physiopathology; D014563:Urodynamics; D055815:Young Adult