Urodynamic effects of intravesical instillation of lidocaine in patients with overactive detrusor.
PURPOSE: We evaluated the effects of intravesical administration of lidocaine on the overactive detrusor in patients with spinal cord injury and cerebrovascular disease. MATERIALS AND METHODS: Cystometry was performed before and 15 minutes after intravesical instillation of 20 ml. of 1 and/or 4% lidocaine in 48 patients with spinal cord injury and 67 with cerebrovascular disease. RESULTS: A significant increase in bladder capacity was observed following administration of 1 and 4% lidocaine in patients tested longer than 1 year after spinal cord injury. However, no significant increase was noted even with 4% lidocaine in those tested within 1 year after injury. A significant increase in bladder capacity was observed in patients with cerebrovascular disease with 4 but not 1% lidocaine. When comparing the percent increase in bladder capacity obtained with 4% lidocaine in the 2 groups, patients with spinal cord injury showed a significantly greater increase than those with cerebrovascular disease (91.6 versus 31.9%, respectively). Detrusor contractions disappeared in 37.5 versus 5.4% of patients, respectively. CONCLUSIONS: Intravesical administration of lidocaine appears to be useful in differentiating detrusor hyperactivity caused by lesions of the spinal cord versus those of the brain.[1]References
- Urodynamic effects of intravesical instillation of lidocaine in patients with overactive detrusor. Yokoyama, O., Ishiura, Y., Nakamura, Y., Kunimi, K., Mita, E., Namiki, M. J. Urol. (1997) [Pubmed]
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