Chronic postoperative pain
Conditions
Interventions
None listed
Sponsors
Keio University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Patients classified as ASA-PS Class 1 or 2 according to the American Society of Anesthesiologists' Physical Status Classification System. Patients who provide written consent to participate in this study.
Exclusion criteria
Exclusion criteria: Patients who have any pain prior to surgery. Patients undergoing surgery for pneumothorax or pectus excavatum in the Department of Respiratory Surgery. Patients undergoing mastectomy with expander insertion. Other patients who cannot undergo MRI imaging (e.g., those with claustrophobia or magnetic metallic implants in their body). Patients currently involved in compensation claims related to pain (e.g., workers' compensation, welfare benefits) or ongoing litigation. Patients deemed unsuitable for this study by the principal investigator or co-investigators.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The average NRS at 1 month and at 3-6 months after surgery. | — |
Secondary
| Measure | Time frame |
|---|---|
| Resting NRS at 3-6 months after surgery. Movement-evoked NRS at 3-6 months after surgery. Resting NRS at 1 month after surgery. Movement-evoked NRS at 1 month after surgery. Relationship between postoperative pain intensity and brain function at 3-6 months after surgery. Relationship between postoperative pain intensity and brain function at 1 month after surgery. Exploration of factors leading to Chronic Post Surgical Pain based on patient background and perioperative information. | — |
Countries
Japan
Contacts
Public ContactSaki Takaoka
Keio University School of Medicine Department of Anesthesiology
Outcome results
None listed