We attempted cystoscopy with a flexible instrument and ureteral catheter insertion
in 152 supine patients. Cystoscopy was successful in 147 patients (97 per cent) and
ureteral catheters were inserted in 133 (91 per cent). Examinations with this instrument
are tolerated better than those with rigid cystoscopes, which may improve patient
compliance with followup examinations. The current drawbacks, namely a smaller field
of view, lower visual acuity and, sometimes, inadequate irrigant flow rates, may be
reduced or overcome with improvements in instrument design.