Study to Test the Value of a Pain Modulation Test in Predicting Persistent Postoperative Pain After Breast Cancer Surgery

Trial of Diagnostic Accuracy for the Prediction of Persistent Postoperative Pain After Breast Cancer Surgery Using a Conditioned Pain Modulation Test

The purpose of this study is to test the hypothesis that a preoperative test of pain modulation predicts persistent pain 4 months after breast cancer surgery. In addition, a risk score for the prediction of persistent pain will be developed from parameters available before surgery.

Inclusion Criteria:

• age >=18 years
• American Society of Anesthesiology functional status I-III
• able to read and understand the information sheet and give informed consent

Exclusion Criteria:

none