A new job for an old device: a novel use for nerve stimulators in anorectal malformations.

Muscle stimulation of the perineum is a crucial step in the repair of anorectal malformations. This allows the surgeon to assess muscle function and locate precisely the sphincter muscles during a pull-through operation. Presently, the device commonly used is very expensive. In searching for a cheaper and amenable device we explored utilizing the nerve stimulator MiniStim (model MS-IIIA, Life-Tech, Inc., Houston, TX) normally used for the "train of four" sign in assessing paralysis during general anesthesia. We have used this device in seven consecutive posterior sagittal anorectoplasties and compared its effectiveness with the regular muscle stimulator. In our experience, the nerve stimulator is easier to work with and is a common device in the operating theater. It gave us information that was at least equal to the regular muscle stimulator.