Genetic Predictors of Analgesic Efficacy of Propranolol for Treating Postoperative Pain (PRO_GENE_POP)
Postoperative Pain
About this trial
This is an interventional treatment trial for Postoperative Pain focused on measuring COMT, Beta-blocker, Hemicolectomy
Eligibility Criteria
Inclusion Criteria:
- Elective laparoscopic hemicolectomy surgery.
- Self-reported Caucasians.
- ASA (American Society of Anesthesiologists) physical status of I or II.
- Agrees to provide signed and dated informed consent form.
- Willingness to agree with the Biobanking policy.
Exclusion Criteria:
- Uncontrolled medical or psychiatric conditions.
- Severe mental impairment.
- History of major depressive disorder, psychotic disorder or schizophrenia, and/or manic episodes within the past year.
- Active alcoholism within the past 6 months.
- Psychoactive recreational drug abuse within the past 6 months including MDMA, Ketamine, hallucinogens such as LSD and/or sympathomimetics such as Cocaine.
- Inability to comprehend pain assessment.
- Pregnancy and/or breast-feeding.
- Known hypersensitivity to Beta Blockers or Opioids.
- Currently taking Propranolol.
- Currently taking other hypotensive treatments.
- Currently taking Opioids.
- Patients with asthma or reactive airway disease.
- Patients with cardiac arrhythmia, coronary artery disease, congestive heart failure.
- Patients with renal failure or dialysis.
- Patients with liver insufficiency.
- Heart rate less than 60bpm or diastolic blood pressure <50 mmHg during the preoperative visit.
Sites / Locations
- Montreal General Hospital
- Royal Victoria Hospital
Arms of the Study
Arm 1
Arm 2
Placebo Comparator
Experimental
IV-PCA morphine + Placebo PO
IV-PCA morphine + Propranolol PO
Pain control after surgery will be performed through IV-PCA morphine. Placebo will be administered with the same schedule of Propranolol in the experimental arm. Parallel evaluation of Quantitative Sensory Testing (QST), Psychometric assessment and COMT-haplotypes will be included along the trial.
The morning of the surgery a dose of Propranolol 20 mg PO will be administered. After surgery pain control will be performed with IV-PCA morphine; in addition a second dose of Propranolol 20 mg PO will be administered . During the first and second postoperative day Propranolol 30 mg PO (BID) will be administered. Parallel assessment of Quantitative Sensory Testing (QST), Psychometric assessment and COMT-haplotypes will be included along the trial.