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Preoperative administration of pregabalin would reduce the end tidal concentration of sevoflurane during laparoscopic cholecystectomy with added beneficial improving of the quality of postoperative analgesia.
laparoscopic cholecystectomy is a painful and stressful surgical procedure. Pregabalin is a lipophilic structural analogue of the inhibitory γ-aminobutyric acid by binding to the presynaptic voltage-gated calcium channels that are widely distributed throughout the central and peripheral nervous system. Pregabalin has anticonvulsant, anxiolytic, sleep-modulating, anti-hyperalgesic, opioid-sparing6 and anti-allodynic properties through inhibition of the release of excitatory neurotransmitters such as glutamate, norepinephrine, serotonin, dopamine and substance P. These unique characteristics make pregabalin as a useful therapeutic for treating neuropathic pain and acute postoperative pain in several models of incisional injury and inflammatory conditions including laparoscopic cholecystectomy.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| pregabalin 150 mg group | Active Comparator | one capsule of pregabalin 150 mg and one placebo capsule |
|
| pregabalin 300 mg group | Active Comparator | two capsules of pregabalin 150 mg |
|
| placebo group | Placebo Comparator | to receive two identical placebo capsules |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Placebo | Drug | to receive two identical placebo capsules 1 hr before surgery |
| |
| Measure | Description | Time Frame |
|---|---|---|
| changes in the end tidal sevoflurane concentrations | End-tidal concentrations of sevoflurane (Et-Sevo) were recorded every 15 min after intubation until the skin closure. | intraoperative every 15 min |
| Measure | Description | Time Frame |
|---|---|---|
| hemodynamic parameters | heart rate and mean arterial blood pressure were recorded before (baseline), 45 min after the administration of the study capsules; every 15 min after intubation until the skin closure and every 15 min for the first hour after extubation. | before surgery, after the administration of the study capsules; intraoperative, an expected average of 2 hours, up to 24 after surgery |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Mansoura University Hospitals | Al Mansurah | DK | 050 | Egypt |
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| ID | Term |
|---|---|
| D000069583 | Pregabalin |
| ID | Term |
|---|---|
| D005680 | gamma-Aminobutyric Acid |
| D000613 | Aminobutyrates |
| D002087 | Butyrates |
| D000144 | Acids, Acyclic |
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| pregabalin |
| Drug |
one capsule of pregabalin 150 mg and one placebo capsule 1 hr before surgery |
|
| pregabalin | Drug | two capsules of pregabalin 150 mg 1 hr before surgery |
|
| intraoperative fentanyl supplementations | intraoperative fentanyl supplementations | intraoperative, an expected average of 2 hours |
| quality of tracheal extubation | The quality of tracheal extubation was evaluated using a 5 - points rating scale: 1, no coughing or straining; 2, very smooth, minimal coughing; 3, moderate coughing; 4, marked coughing or straining; and 5, poor extubation, very uncomfortable | up to 24 after surgery |
| postoperative cumulative morphine consumption | postoperative cumulative morphine consumption | up to 24 after surgery |
| postoperative sedation and pain scores | Postoperative pain VAS scores sedation (four-point verbal rating scores (VRS): awake, drowsy, rousable or deep sleep) | up to 24 after surgery |
| postoperative nausea and vomiting | nausea and vomiting (0: no nausea; 1: nausea no vomiting; 2: nausea and vomiting) | up to 24 after surgery |
| awareness and recall | The patients were asked about intraoperative awareness and recall on the second postoperative day by asking three simple questions using standard interview "What was the last thing you remembered happening before you went to sleep? What is the first thing you remember happening on waking? Did you dream or have any other experiences whilst you were asleep?" | intraoperative, an expected average of 2 hours |
| D002264 |
| Carboxylic Acids |
| D009930 | Organic Chemicals |
| D000596 | Amino Acids |
| D000602 | Amino Acids, Peptides, and Proteins |