Adjustment of neurostimulator settings to see whether or not abdominal stimulation can be provoked

This is an interventional prospective study. After obtaining informed consent, only necessary information will be extracted through the electronic patient record. Through post-operative imaging, a level determination of the neurostimulator tip will be done. During general consultations, patients will be asked if they experienced abdominal wall stimulation after the procedure and when (YES/NO, NRS). This will include looking at the settings of the neurostimulator. And its adjustments. Furthermore, general epidemiological characteristics such as age, gender, height, weight will be extracted from the electronic patient record.

At the consultation, another active programming will take place (in accordance with clinical programming) on the tip of the electrode to check whether it provokes abdominal wall stimulation. This will also be scored YES/NO + NRS. Then the settings will be returned as they were pre-consultation.

Is abdominal wall stimulation present YES/NO and if so what is the score between 0 and 10 on an NRS 1-10. This is then correlated to the position of the electrode.