This study shows that AFCs and WFCs cannot be assumed to register equal values of pressure. It has further shown that even when the p readings are compared with their value at the start of a test, a divergence of values of up to 10 cmH O remains. If AFCs are used, care must be taken to compensate for any p variations that occur during patient movement. Before AFCs are adopted, new normal values for resting pressures need to be developed to allow good quality AFC pressure readings to be made. Neurourol. Urodynam. 35:926-933, 2016. © 2015 Wiley Periodicals, Inc.

Objectives To assess the additional value of ambulatory urodynamics (AUDS) monitoring in the management of patients with unexplained lower urinary tract symptoms. Methods A retrospective review of the urodynamic data at a tertiary referral center between January 2006 and December 2018. During this period 12,123 urodynamic studies were conducted; 430 patients were arranged to have AUDS monitoring because their symptoms were not reproduced with either standard or video urodynamics (UDS). Results A total of 391 patients were included, (360 females, 31 males). Symptoms were reproduced in 74% of cases. The most common AUDS finding was detrusor overactivity with or without incontinence, followed by urodynamic stress incontinence. In 75.7% of the patients, the additional information from AUDS resulted in a change to patient management. Conclusions Additional UDS findings were made in the majority of patients who underwent AUDS. This helped in setting a new treatment plan for the bothersome urinary findings. AUDS monitoring is a useful additional diagnostic tool and can help to guide patient management where symptoms are not explained by standard or video UDS.

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