* Accessing the efficacy and safety of pregabalin when used alone and in combo with acetaminophen in a dental pain model. * To test whether pre-operative dose of pregabalin increases the time to significant post-operative pain (NRS ≥ 5), and hence time to first analgesia consumed post-operatively.
This is a 5 arm randomized, double-blind, parallel group, single-center, placebo-controlled study to evaluate the efficacy and safety of pregabalin-acetaminophen combination in the prevention and treatment of post-surgical dental pain in healthy patients. Subjects in every treatment arm will receive a dose 60 min prior to surgery. It is not required to receive a post-operative dose if patient does not feel pain at a scale of NRS≥ 5. Dose 2 will be given post-surgically when patients report at least moderate pain on the categorical scale and a score of ≥5 on 0-10 PI-NRS. Subsequent to dose 2, patients can request rescue analgesic at any time.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
115
Pre-op pregabalin will be administered 60 min prior to surgery.
Placebo 1 will be administered 60 min prior to surgery.
Post-op pregabalin will be administered Post-operatively.
Jean Brown Research
Salt Lake City, Utah, United States
Sum Pain Intensity Difference Scores
Beginning post-surgery (at initiation of Dose 2), Pain Intensity was self-reported over 24 hours, using a pain rating of 0-10 on the Numerical Rating Scale (NRS), with score between 0-10 (0= no pain; 10 = pain as bad as can be). Time weighted sum pain intensity difference scores are reported over 0 to 24 hours. Last observation carried forward method was used.
Time frame: 0.5, 0.75, 1, 1.25, 1.75, 2.25 hours (± 5 min) and 3.25, 4.25, 5.25, 6.25, 8.25, 10.25, 12.25, 24 hours (± 10 min)
Total Pain Relief Measure
Beginning post-surgery (at initiation of Dose 2), Pain Relief was self-reported over 24 hours, using a pain rating of 0-10 on the Numerical Rating Scale (NRS), with score between 0-10 (0= no pain; 10 = pain as bad as can be). Time-weighted sum pain total pain relief scores over 24 hours is reported Last observation carried forward method was used.
Time frame: 0.5, 0.75, 1, 1.25, 1.75, 2.25 hours (± 5 min) and 3.25, 4.25, 5.25, 6.25, 8.25, 10.25, 12.25, 24 hours (± 10 min)
Number of Participants With Differing Patient Global Evaluation Scores
Patient global evaluation was self-reported at time of first rescue or at 12.25 hours post-surgery, whichever was first, using a 0-4 categorical rating scale of: (0) poor, (1) fair, (2) good, (3) very good, and (4) excellent. The number of participants with differing patient global evaluation scores were reported.
Time frame: Upto 12.25 hours
Cumulative Number of Participants With Onset of First Perceptible Relief (FPR) Confirmed at 24 Hours After Dose 2
Beginning post-surgery (at initiation of Dose 2), participants were given a stopwatch and asked to press the stopwatch if and when they feel first perceptible relief; a record of the time was noted in the participants record. Cumulative number of participants with onset of FPR confirmed after dose 2 and was recorded from 0.25 hour till 24 hours after administration of dose 2.
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Placebo 1 will be administered post-operatively.
Placebo 2 will be administered post-operatively.
Acetaminophen will be administered Post-operatively.
Time frame: 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 12.0 and 24 hours
Cumulative Number of Participants With Onset of Meaning Pain Relief (MPR) Confirmed at 24 Hours After Dose 2
Beginning post-surgery (at initiation of Dose 2), participants were given a stopwatch and asked to press the stopwatch if and when they feel first perceptible relief; a record of the time was noted in the participants record. Cumulative number of participants with onset of MPR confirmed after dose 2 and was recorded from 0.25 hour till 24 hours after administration of dose 2.
Time frame: 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 12.0 and 24 hours