Abstract
The authors should be congratulated for publishing an excellent study on the impact of percutaneous tibial nerve stimulation (PTNS) on a refractory overactive bladder population. Including both subjective (questionnaires) and objective measures (diaries and urodynamics) was a unique aspect to this trial. Their definition of success was more stringent than previous studies and included >50% improvement in daytime urinary frequency, nighttime urinary frequency, reduction in OAB-q and the ICIQ-SF and at least a 50% improvement in a minimum of two urodynamic parameters. According to this criteria, 73.5% achieved success and another 20.5% were improved. Only 6 patients were considered failures. If one looked only at clinical success, PTNS was successful in 90.5% of patients, much higher than has been previously reported.
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