SUMMARY In 25 neurological patients with detrusor hyperreflexia terodiline reduced the number of total micturitions during daytime. Bladder capacity was increased and amplitude of the bladder contractions was reduced. An increase in residual urine was also observed. Mild anticholinergic side-effects were measured on pupillary motility and on heart rate variation. It is concluded that terodil:ne is a useful alternative in treatment of patients with detrusor hyperreflexia.Pharmacological treatment of urinary frequency and incontinence due to detrusor hyperreflexia by anticholinergic agents is often unsuccessful. Blockade of parasympathetic activity may be insufficient and, furthermore, systemic anticholinergic effects often give rise to complaints and withdrawal of therapy.' 4 Consequently, there is a need for a new pharmacological approach to the treatment of bladder hyperreflexia. Calcium blocking agents with smooth muscle relaxing properties might well be such an alternative. Recently compounds have been developed that combine an anticholinergic effect with calcium blockade. This combination could possibly improve bladder function in patients with detrusor hyperreflexia without giving rise to more systemic anticholinergic side-effects. Terodiline has shown this combined anticholinergic and calcium blocking effect in in vitro studies of muscle strip preparations' and a therapeutic clinical effect has been obtained in patients with idiopathic detrusor instability.6 In clinical studies it has proved to be safe with only mild anticholinergic side-effects7 and systemic bioavailability of the drug is high.8We have conducted a randomised, placebocontrolled, double-blind, cross-over study of the effect of terodiline on bladder function in patients with detrusor hyperreflexia. Also the effect on cholinergic functions, that is, pupil motility and heart rate, as well as a possible therapeutic effect on lower limb spasticity have been evaluated.
Materials and methodsPatients with neurological diseases, urinary frequency and/or incontinence and with detrusor hyperreflexia, as defined by the International Continence Society,9 were eligible for study. Frequency was defined as eight or more passages of urine per day. Overall disability score was rated according to a previous report'0 and recorded together with body weight and blood pressure before entrance to the study and at follow-up examinations. The study was approved by the Ethical Committee and informed consent was obtained from the patients before start of the study. Exclusions Patients with urinary tract infection and patients with suspected prostatic enlargement, as evaluated from the urethral pressure profile and from the maximal urinary flow, were excluded. Patients with glaucoma, severe urinary retention, decreased liver and kidney function, and pregnant patients were also excluded. Design of study After 1 week without any medication for bladder dysfunction the patients were allocated at random to terodiline 25mg or identical placebo tablets twice daily for 4 week...