APP-based Precise Management System of Chronic Intractable Pain

The daily pain state assessments contain three components, the visual analogue scale (VAS) based on pain intensity, time-intensity curve throughout the day, and pain locations. The VAS scores from the first seven post-operative days will be collected as the baseline data. The interventional threshold will be determined by adding 30 mm (if the scale length were 100 mm) to the baseline mean. If participants score above the threshold three times in a row, a warning will be sent to their physicians. A remote meeting will be scheduled and stimulation settings will be adjusted accordingly.