Following a mastectomy, patients may develop chronic pain, called post-mastectomy pain syndrome (PMPS). This syndrome manifests itself as complex neuropathic pain that seems linked to nerve damage suffered either during surgery, during healing or by nervous system dysfunction. However, the exact pathophysiology remains unknown. Typically, the pain is located on the ipsilateral side of the surgery and projects to the anterior thorax to the lateral thorax and may affect the proximal part of the arm. This pain persists for more than three months following the procedure and has the characteristics of neuropathic pain: burning sensation, tingling, electric shock, hyperalgesia, etc. The prevalence of PMDS varies between 2% and 78%; this disparity comes from the fact that there are no clear criteria in the literature for making the diagnosis. One of the risk factors for developing PMDS is the presence of acute pain immediately postoperatively. The main objective of this study is to compare two analgesic modalities, namely BPV (study modality) and usual analgesia (control modality), in patients undergoing total mastectomy with immediate reconstruction under general anesthesia with the aim of to evaluate their functional pain score at 24, 48 and 72 hours following the surgical procedure.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
60
An ultrasound-guided technique will be used to inject a volume of 40 mL of ropivacaine 0.2%, up to a maximum of 1.5 mg/kg, into the paravertebral space between the T3 and T4 vertebrae.
The patient will receive analgesia as per the anesthesiologist's preferences.
CHU de Quebec - Universite Laval
Québec, Quebec, Canada
RECRUITINGEvaluation of postoperative pain using the BPI
Postoperative pain will be measured using the Brief Pain Inventory (BPI)
Time frame: 24 hours, 28 hours, 72 hours after surgery
Total use of opioids received intraoperatively.
Total dose of narcotics received intraoperatively (in mg morphine equivalent)
Time frame: within 3 months after surgery
Use of non-opioid analgesia intraoperatively
Analgesics other than opioids used intraoperatively
Time frame: During surgery
Total dose of opioids received in the PACU
Total dose of narcotics received in the post-anesthesia care unit (PACU) (in mg morphine equivalent)
Time frame: During PACU stay
Time before first opioid
Time to first opioid dose after surgery
Time frame: Within 3 months after surgery
Total opioids consumed in the 48 hours following surgery
Total quantity of opioids consumed in the 48 hours following surgery (in morphine equivalent)
Time frame: Within 48 hours after surgery
Chronic pain
Presence of chronic pain at the surgical site at 3 months
Time frame: At 3 months after surgery
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.