PURPOSE: We prospectively studied the effect of lumbar intervertebral disk protrusion on bladder function. Cystometry findings were particularly examined according to spinal level of disk protrusion and urological symptoms. MATERIALS AND METHODS: We evaluated 77 men and 37 women 25 to 63 years old with lumbar intervertebral disk protrusion. Urodynamic investigation included uroflowmetry and simultaneous recording of intravesical, abdominal and detrusor pressure during bladder filling and voiding. RESULTS: Detrusor areflexia was noted in 31 of the 114 patients (27.2%), while detrusor activity was normal in the remaining 83. According to the spinal level of disk protrusion, detrusor areflexia was evident in 3 of the 8 cases of L3, 10 of the 54 L4 and 18 of the 52 L5 disk protrusion. All 31 patients with detrusor areflexia reported difficult voiding with straining. CONCLUSIONS: Detrusor areflexia develops in approximately a quarter of the patients with lumbar intervertebral disk protrusion. We did not find that the spinal level of lumbar disk protrusion had an effect on detrusor activity. All patients with detrusor areflexia had voiding disorders that manifested as voiding with straining.
PURPOSE: We prospectively studied the effect of lumbar intervertebral disk protrusion on bladder function. Cystometry findings were particularly examined according to spinal level of disk protrusion and urological symptoms. MATERIALS AND METHODS: We evaluated 77 men and 37 women 25 to 63 years old with lumbar intervertebral disk protrusion. Urodynamic investigation included uroflowmetry and simultaneous recording of intravesical, abdominal and detrusor pressure during bladder filling and voiding. RESULTS:Detrusor areflexia was noted in 31 of the 114 patients (27.2%), while detrusor activity was normal in the remaining 83. According to the spinal level of disk protrusion, detrusor areflexia was evident in 3 of the 8 cases of L3, 10 of the 54 L4 and 18 of the 52 L5 disk protrusion. All 31 patients with detrusor areflexia reported difficult voiding with straining. CONCLUSIONS:Detrusor areflexia develops in approximately a quarter of the patients with lumbar intervertebral disk protrusion. We did not find that the spinal level of lumbar disk protrusion had an effect on detrusor activity. All patients with detrusor areflexia had voiding disorders that manifested as voiding with straining.