Reducing Pain and Disability After Breast Cancer Surgery (RELIeF)
|Breast Cancer Chronic Pain||Procedure: Thoracic Paravertebral Block (TPVB) Procedure: Local Anesthetic|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Participant, Care Provider, Investigator, Outcomes Assessor
Primary Purpose: Prevention
|Official Title:||Efficacy of Thoracic Paravertebral Block in Reducing Chronic Pain and Disability After Breast Cancer Surgery With Axillary Lymph Node Dissection|
- The proportion of individuals reporting chronic postoperative pain 12 months following breast cancer surgery with lymph node dissection. Chronic pain will be defined by a Numeric Rating Scale (NRS) score of >3 (rest or with arm movement). [ Time Frame: 1 year ]
- Arm morbidity, shoulder range of motion, quality of analgesia, arm lymphedema, time to meet discharge criteria, quality of recovery, quality of life, incidence of postoperative side effects. [ Time Frame: 1 year ]
|Study Start Date:||September 2009|
|Study Completion Date:||June 2013|
|Primary Completion Date:||September 2012 (Final data collection date for primary outcome measure)|
Experimental: Thoracic PVB + multimodal anesthesia
Thoracic PVB + multimodal anesthesia
Procedure: Thoracic Paravertebral Block (TPVB)
The middle of the spinous process above the nerve to be blocked is located and the overlying skin marked 2.5 centimeters lateral to this. Subcutaneous lidocaine is injected and a 22 G Tuohy tipped 8 cm needle is inserted at this level and advanced to identify the transverse process. The needle is then moved caudad off the transverse process and inserted a centimeter into the paravertebral space. Five mls of 0.5% ropivacaine with 1:200,000 epinephrine is injected at each paravertebral space. Blocks adjacent to the C7-T5 spinous processes are performed. For patients randomized to the LA group: The patients are identically positioned, sedated and identical landmarks are used to perform sham paravertebral blocks via a subcutaneous saline injection of 0.5mL with a 25G needle at each level.
Other Name: Regional analgesia; neural blockade
Active Comparator: Local anesthetic + multi-modal analgesia
Local anesthetic + multi-modal analgesia
Procedure: Local Anesthetic
At the conclusion of surgery, the surgeon will infiltrate the incision with 10 ml of saline 0.9% (TPVB group) or 0.5% ropivacaine (LA group). An axillary drain will be placed. After closure of the wound, 20 ml of saline 0.9% (TPVB group) or 0.5% ropivacaine (LA group) will be injected through the drain and the drain clamped for 30 minutes after injection.
Other Name: local anesthesia
Sixty percent of breast cancer patients undergo some form of breast surgery in the treatment of the early stages of the disease. The recovery from surgery can be associated with severe disabling pain persisting beyond 12 months after surgery. Research in pain has shown that early intervention of acute pain can prevent long term chronic pain.
At The Ottawa Hospital, patients receive either paravertebral blocks or wound infiltration with local anesthetic for postoperative pain management. We would like to compare these two methods of pain control to determine an analgesic technique that will reduce acute and chronic pain, and maximally improve long-term functional recovery and patient's quality of life.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01089933
|The Ottawa Hospital|
|Ottawa, Ontario, Canada, K1Y 4E9|
|Principal Investigator:||Michelle Chiu, MD||The Ottawa Hospital / Ottawa Health Research Institute|