Opioid Free Anesthesia and Continuous Post-operative Pulse Oximetry Monitoring in the Obese Patient
Study Details
Study Description
Brief Summary
Anaesthesia has three major components, analgesia, muscle relaxation and hypnosis.
For a long time, opioids have been covering the analgesia function. (1) When using opioids, an analgesic effect is obtained per-operatively, however, not without side-effects. Post-operative complications such as: respiratory depression, post-operative nausea and vomiting, pruritus, acute opioid tolerance and hyperalgesia, difficulty voiding and ileus, are well known.
Opioid usage is an important risk factor of postoperative desaturation. Postoperative desaturation can lead to severe hypoxemia and even tissue hypoxia, followed by obvious cardiologic and neurological complications.
Thus, in patients at risk, such as the obese patient, experts suggest reducing opioid usage.
Non-opiate protocols implemented on the obese patient have been published. Non-opiate protocols have been established using a combination of ketamine, lidocaine and an alpha-2 agonist.
The main purpose of this pilot study is to evaluate whether patients undergoing an opioid free anaesthesia regime experience less desaturation episodes during the first 24 h post-bariatric surgery than patients having received an opioid anaesthesia regime.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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N/A |
Detailed Description
Anaesthesia has three major components, analgesia, muscle relaxation and hypnosis.
For a long time, opioids have been covering the analgesia function. When using opioids, an analgesic effect is obtained per-operatively, however, not without side-effects. Post-operative complications such as: respiratory depression, post-operative nausea and vomiting, pruritus, acute opioid tolerance and hyperalgesia, difficulty voiding and ileus, are well known. These complications may lead to a prolonged hospital stay.
Opioid usage is an important risk factor of postoperative desaturation. Postoperative desaturation can lead to severe hypoxemia and even tissue hypoxia, followed by obvious cardiologic and neurological complications.
Thus, in patients at risk, such as the obese patient, experts suggest reducing opioid usage.
Authors have indeed published non-opiate protocols implemented on the obese patient.
Non-opiate protocols have been established using a combination of ketamine, lidocaine and an alpha-2 agonist.
The main purpose of this pilot study is to evaluate whether patients undergoing an opioid free anaesthesia regime experience less desaturation episodes during the first 24 h post-bariatric surgery than patients having received an opioid anaesthesia regime.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Active Comparator: opioid free group Opioid free group using dexmedetomidine, ketamine, lidocaine, MgSO4 |
Combination Product: Opioid free
Peroperative opioid free anesthesia will be obtained via a combination of dexmedetomidine, ketamine, lidocaine and magnesium sulfate
Other Names:
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| Placebo Comparator: Opioid group Opioid group using sufentanil, lidocaine, clonidine |
Combination Product: opioid group
Opioid anesthesia will follow the current standard approach of our hospital.
Other Names:
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Outcome Measures
Primary Outcome Measures
- desaturation episode evaluation [first 24 hours postoperative]
The primary outcome of this study is to evaluate desaturation episodes during the first 24 h post-bariatric surgery in patients having received an opioid or an opioid free anaesthesia. Desaturation is defined as a decrease of oxygen desaturation equal to or exceeding 4% of the baseline value. ODI (oxygen desaturation index), the total number of desaturation events divided by the total time of monitoring in hours, will be calculated to evaluate this outcome in both groups. In case of desaturation lasting longer than 10 seconds, oxygen (via nasal canula) will be administered as per post-anaesthesia care unit protocol. SP02 will be measured for 24 hours through non-invasive monitoring.
Eligibility Criteria
Criteria
Inclusion Criteria:
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All patients undergoing a gastric by-pass surgery will be screened.
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Patients with an ASA physical status of I-II-III (BMI >30) will be included.
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Knowledge of either French, English or Dutch will be required in order to be enrolled in this study.
Exclusion Criteria:
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allergy or contraindications to one of the study drugs
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renal failure
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hepatic failure
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hyperthyroidism
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AV block 2 or 3
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severe bradycardia
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left ventricular failure
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unstable blood pressure
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severe respiratory disease
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epilepsy
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psychiatric disturbance.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Erasme Hospital | Brussels | Belgium | 1070 |
Sponsors and Collaborators
- Université Libre de Bruxelles
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- OFA