Ambulatory Urodynamic Findings Change Patient Outcomes

Objectives: Whilst ambulatory urodynamics (aUDS) may be used as a second-stage test for patients with refractory lower urinary tract symptoms (LUTS) having non-diagnostic conventional urodynamics (UDS), the evidence for their use is limited. We have assessed the diagnostic utility and consequent symptomatic outcome of aUDS in patients with refractory LUTS. Methods: A retrospective review of a prospectively acquired urodynamics database was made of 84 consecutive patients (23 male) with a median age 50.5 years (range 18 to 79) having aUDS following non-diagnostic or contradictory baseline UDS over a 12-month period. Patient demographics and urodynamic and clinical diagnosis before and after aUDS were recorded. Forty-six patients (55%) had formal urinary symptom assessment recorded before and a minimum of 6 months following aUDS-related change in management. Results: Eighty-two patients (98%) had a urodynamic diagnosis made following aUDS, 57(68%) of whom had detrusor overactivity (DO); the final 2 patients had no abnormalities detected on aUDS. Change in primary UDS diagnosis occurred in 66 patients (79%). Of these 66 patients, 59 (89%) also had their clinical diagnosis changed, and 55 (83%) had their management pathway changed. There was a significant improvement in urinary symptoms 6 months following aUDS. Conclusion: Change in primary diagnosis following aUDS led to a significant change in treatment care pathway and resulted in significant improvement in urinary symptoms