Can Sensory and/or Motor Reactions During Percutaneous Nerve Evaluation Predict Outcome of Sacral Nerve Modulation?

Abstract

Positive motor responses during percutaneous nerve evaluation are highly predictive of a successful outcome of subchronic test stimulation and permanent sacral nerve modulation. Sensory responses also have the same predictive value. For this reason, percutaneous nerve evaluation preferably should be performed in awake patients under local anesthesia to avoid missing those who may benefit from permanent stimulation but who do not have a motor response during the procedure.