Which clinical measurement is often used to evaluate SNM impact on bladder function?

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Assessing how sacral neuromodulation changes bladder function relies on patient-centered outcomes that reflect real-life symptoms. SNM aims to reduce urgency and improve continence, so the most informative evidence comes from patient reports and bladder diaries that track how often urgency occurs and how often leakage happens, along with daily voiding patterns. These measures capture the actual burden of symptoms and functional improvements over time. Objective tests like urinary flow rate focus on voiding mechanics but don’t necessarily reflect changes in urgency or incontinence; renal function tests assess kidney health rather than bladder symptoms; imaging-based bladder size measures anatomy but not the patient’s functional experience. So, a reduction in urgency episodes and improved continence documented by patient reports and diary data best reflects SNM’s impact on bladder function.