A Study of Acetaminophen for Post Surgical Dental Pain
Study Details
Study Description
Brief Summary
To assess the safety, tolerability, analgesic, efficacy and pharmacokinetics of high dose acetaminophen relative to placebo and low dose acetaminophen relative to placebo over a 24 hour period in patient experiencing moderate to severe pain following the surgical removal of third molar.
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
|
Phase 2 |
Detailed Description
This will be a randomized, double-blind, single-site, placebo-controlled, parallel-group study to assess similarities in safety, tolerability, efficacy, and pharmacokinetics of high dose acetaminophen given relative to placebo, and low dose acetaminophen given relative to placebo over a 24-hour period in patients experiencing moderate to severe postsurgical pain within 7 hours following surgical removal of 2 or more molars
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Active Comparator: High Dose Acetaminophen High Dose Acetaminophen Post Op |
Drug: Acetaminophen
Acetaminophen is an analgesic and antipyretic
Other Names:
|
Active Comparator: Low Dose Acetaminophen Low Dose Acetaminophen Post Op |
Drug: Acetaminophen
Acetaminophen is an analgesic and antipyretic
Other Names:
|
Placebo Comparator: Placebo Placebo Post Op |
Other: Placebo
Saline
|
Outcome Measures
Primary Outcome Measures
- Sum of Pain Intensity Difference From 0 to 24 Hours (SPID24) Based on the 11 Point Numeric Pain Rating Scale [Baseline (0.0) and 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min) hours]
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 = worst imaginable pain). Time weighted sum of pain intensity difference from 0 to 24 hours was reported. Pain Intensity (PI-NPRS) was collected at initiation of Dose 1 (T0) and post dose 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min). SPID24 was include all nominal timepoints from T0 to T24.25 hours. SPID is calculated as Σ[T(i) -T(i-1)] x [(PID(i-1) + PID(i))/2], where T(0)=0, T(i) is the scheduled time, and PID(i) is the pain intensity difference (PID) score at time i. Pain intensity differences were calculated with respect to Baseline. A baseline assessment is defined as the last non-missing result prior to administration of the first dose of study medication.
- Sum of Pain Relief From 0 to 24 Hours (TOTPAR24) Based on a 5-point Likert Scale. [Baseline (0.0) and 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min) hours]
Pain Relief Rating (PR) was scored on a 5-point scale (0=no-, 1=a little-, 2=some-, 3=a lot of-, and 4=complete- PR). PR was collected at initiation of Dose 1 (T0) and post dose 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min) hours. TOTPAR24 is calculated as Sum ([T(i) - T(i-1)] x (PR(i-1) + PR(i)) / 2), where T(0)=0, T(i) is the actual time, and PR(i) is the pain relief score at time i. and calculated as Σ[T(i) -T(i-1)] x [(PR(i-1) + PR(i))/2], where T(0)=0, T(i) is the scheduled time, and PR(i) is the pain relief (PR) score at time i.
Secondary Outcome Measures
- Time to Perceptible Pain Relief Confirmed (FPR-C) After Dose 1 Administration Stratified by Baseline Pain Score of Moderate or Severe for the 3 Treatment Groups [0 to 24 Hours]
Upon initiation of the infusion of Dose 1, the participants were given stopwatch #1 and asked to press the stopwatch when they first perceived any pain relief (first perceptible pain relief [FPR]) ; a record of the time was noted in the participant record. If a participant does not record perceptible pain relief and prematurely discontinued from the study prior to 24 hours, then the participant was censored at time of drop out. If a participant does not record perceptible pain relief prior to taking rescue medication, the participant was censored at 24 hours
- Time to Meaningful Perceptible Relief (MPR) Measure Stratified by Baseline Pain Score of Moderate or Severe for the 3 Treatment Groups [0 to 24 Hours]
Upon initiation of the infusion of Dose 1, the participants were given a second stopwatch and asked to press the stopwatch if and when they feel any meaningful perceptible relief; a record of the time was noted in the participant record. If a participant does not record perceptible pain relief and was prematurely discontinued from the study prior to 24 hours, then the participant was censored at time of drop out. If a participant does not record perceptible pain relief prior to taking rescue medication, the participant was censored at 24 hours.
- Patient Global Evaluation of the Study Medication [0 to 24 Hours]
Patients Global Evaluation was assessed on a scale of 0 (Poor), 1 (Fair), 2 (Good), 3 (Very Good) and 4 (Excellent) at 24.25 hours post-dose 1 or at participant withdrawal (if applicable), whichever occurred first. Least squares mean of the score are reported.
- Pain Intensity Difference Rating (PID) at Different Timepoints After Dose 1 Administration [Baseline (0.0) and 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 hours (± 10 min)]
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 = worst imaginable pain). Pain intensity differences were calculated with respect to Baseline at each time point after Dose 1 administration. A baseline assessment was defined as the last non-missing result prior to administration of the first dose of study medication
- Pain Intensity Rating at Different Timepoints After Dose 1 Administration [0 to 24 hours]
Pain intensity is reported using the 11-point Numerical Rating Scale (NRS), with score between 0-10 (0= no pain; 10 = worst imaginable pain).
- Pain Relief (PR) Ratings at Each Observation Time After Dose 1 Administration [0 to 24 hours]
Pain Relief is reported on a 5-Point Categorical Pain Relief Assessment scale: 0 = No Pain Relief, 1 = A Little Pain Relief, 2 = Some Pain Relief, 3 = A Lot of Pain Relief, 4 = Complete Pain Relief.
- Time to Treatment Failure [0 to 24 Hours]
Time to treatment failure is defined as time to first dose of rescue medication after Dose 1 or withdrawal from the study for any reason. If a participant does not take rescue medication or withdraw from the study prior to 24 hours, the participant was censored at 24 hours
Other Outcome Measures
- Mean Change From Baseline to 24 Hours in Vital Signs (Systolic Blood Pressure) [0 to 24 hours]
Change from Baseline in systolic blood pressure is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Systolic blood pressure is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min).
- Mean Change From Baseline to 24 Hours in Vital Signs (Diastolic Blood Pressure) [0 to 24 hours]
Change from Baseline in diastolic blood pressure is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Diastolic blood pressure is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min)
- Mean Change From Baseline to 24 Hours in Vital Signs (Temperature) [0 to 24 hours]
Change from Baseline in temperature is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Temperature is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min)
- Mean Change From Baseline to 24 Hours in Vital Signs (Pulse Rate) [0 to 24 hours]
Change from Baseline in pulse rate is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Pulse rate is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min)
- Mean Change From Baseline to 24 Hours in Vital Signs (Respiratory Rate) [0 to 24 hours]
Change from Baseline in respiratory rate was the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Respiratory rate was obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min)
- Area Under the Plasma Concentration-Time Curve From Time of Administration to 24 Hours After Dosing (AUC 0-24h) [Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose]
The Area Under the Plasma Concentration-Time Curve (AUC) is a measure of the plasma concentration of the drug over time. It is used to characterize drug absorption. The values for pharmacokinetic (PK) evaluable population-excluding participants with positive pre-dose concentrations have been populated. The samples were collected at 5 min prior to Dose 1, and at 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose 1.
- Area Under the Plasma Concentration-Time Curve From Time Zero to Infinite Time (AUC[0-infinity]) [Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose]
The AUC(0-infinity) is area under the plasma concentration-time curve from time zero to infinite time. The samples were collected at 5 min prior to Dose 1, and at 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose 1.
- Half-life [Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose]
The half-life (t 1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration.
- Maximum Observed Plasma Concentration (Cmax) [Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose]
The Plasma Concentration (Cmax) is defined as maximum observed concentration
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Patients must be capable of reading, comprehending, and signing the informed consent/assent form;
-
Male and female patients between 17-55 years of age;
-
Body Mass Index (BMI) ≤35.0 kg/m2
-
Body weight of >50 kg
-
Patients are American Society of Anaesthesiologists (ASA) Category I or II and are in good physical health as judged by a thorough history and physical examination;
-
Patients without infections in the area of the impacted teeth;
-
Patients must agree to refrain from ingesting any systemic or applying any topical analgesic medication for 3 days or 5 half-lives of the drug prior to and during the study;
-
No alcohol for a minimum of 24 hours prior to the surgery;
-
Female patients must be of non-child bearing potential, defined as postmenopausal for more than 1 year or surgically sterile (hysterectomy, tubal ligation/occlusion) or practicing an acceptable method of contraception (hormonal oral, patch, or implant, double barrier method, intrauterine device, vasectomized or same sex partner, or abstinence). Patients using hormonal birth control must have been on a stable dose of treatment for at least 30 days and received at least 1 cycle of treatment prior to randomization. At Screening and at the day of surgery, all females of childbearing potential must have a negative (serum at screening and urine on day of surgery 1) pregnancy test and not be breastfeeding;
-
Patients must have a negative urine drug screen for drugs of abuse at Screening and on the day of surgery. At the discretion of the Principal Investigator, a positive drug screen result may be permitted if the patient has been on a stable dose of an allowed medication for >30 days;
-
Patients who are scheduled to undergo the surgical removal of up to 4 third molars of which at least two have to be mandibular molars with a difficulty rating of 4 or 5 and meeting the following criteria:
-
two full bony impactions
-
two partial bony impactions
-
one full bony impaction in combination with one partial bony impaction (see Appendix 1 for Impaction Difficulty Rating Scale);
- Patients able to comprehend and follow the requirements of the study (including availability on scheduled visit dates) based upon the research site's judgment.
Exclusion Criteria:
-
Patients with a history of any significant medical condition that, in the opinion of the Principal Investigator or his designee, would place the patient at increased risk such as: hepatic, renal, endocrine, cardiac, neurological, psychiatric, gastrointestinal, pulmonary, hematologic, or metabolic disorders, including glaucoma, diabetes, emphysema, and chronic bronchitis;
-
Patients with a history of any type of malignancy within the past 5 years other than minor skin related cancers;
-
Patients with a history of alcohol or substance abuse in the past three years according to Diagnostic and Statistical Manual (DSM) V and who do not satisfy Inclusion Criteria 10 (including a positive urine drug screen test);
-
Patients with a known allergy or hypersensitivity to any local anesthetic drug, acetaminophen, ibuprofen, or other NSAIDS;
-
Patients who are taking any concomitant medications that might confound assessments of pain relief, such as psychotropic drugs, antidepressants, sedative hypnotics or any analgesics taken within three days or five times of their elimination half-lives, whichever is longer. Selective serotonin reuptake inhibitors (SSRIs) and selective noradrenaline reuptake inhibitors (SNRIs) are permitted if the patient has been on a stable dose for at least 30 days prior to screening;
-
Patients who have smoked or chewed tobacco-containing substances within 48 hours prior to the day of surgery;
-
Patients judged by the Principal Investigator to be unable or unwilling to comply with the requirements of the protocol;
-
Patients who have used an investigational drug within 30 days prior to the screening day or have previously participated in any Nevakar trial;
-
Patients who have donated blood within 3 months prior to the screening day;
-
Patients who are employees or relatives of employees of JBR Clinical Research or Nevakar, Inc.
-
Patients with liver function tests (ALT, AST) that are above the normal reference range.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | JBR | Salt Lake City | Utah | United States | 84107 |
Sponsors and Collaborators
- Nevakar, Inc.
Investigators
- Study Director: Eric Lang, MD, Nevakar, Inc.
Study Documents (Full-Text)
More Information
Publications
None provided.- CP-NVK009-0002
Study Results
Participant Flow
Recruitment Details | Participants were recruited from April 2019 till July 2019 from the site |
---|---|
Pre-assignment Detail | A total of 226 participants were screened from Day-30 to Day 0 before getting randomized |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Period Title: Overall Study | |||
STARTED | 44 | 44 | 22 |
COMPLETED | 43 | 44 | 21 |
NOT COMPLETED | 1 | 0 | 1 |
Baseline Characteristics
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo | Total |
---|---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively | Total of all reporting groups |
Overall Participants | 44 | 44 | 22 | 110 |
Age (years) [Mean (Standard Deviation) ] | ||||
Mean (Standard Deviation) [years] |
18.7
(2.06)
|
18.8
(2.31)
|
19.3
(2.42)
|
18.9
(2.23)
|
Sex: Female, Male (Count of Participants) | ||||
Female |
25
56.8%
|
22
50%
|
11
50%
|
58
52.7%
|
Male |
19
43.2%
|
22
50%
|
11
50%
|
52
47.3%
|
Race/Ethnicity, Customized (Count of Participants) | ||||
Race-Asian |
1
2.3%
|
0
0%
|
0
0%
|
1
0.9%
|
Race-White |
39
88.6%
|
39
88.6%
|
22
100%
|
100
90.9%
|
Race-Others |
2
4.5%
|
4
9.1%
|
0
0%
|
6
5.5%
|
Race-Black or African American |
1
2.3%
|
0
0%
|
0
0%
|
1
0.9%
|
Race- Native Hawaiian or Other Pacific Islander |
1
2.3%
|
1
2.3%
|
0
0%
|
2
1.8%
|
Ethnicity-Hispanic or Latino |
9
20.5%
|
8
18.2%
|
1
4.5%
|
18
16.4%
|
Ethinicity-Not Hispanic or Latino |
35
79.5%
|
36
81.8%
|
21
95.5%
|
92
83.6%
|
Body Mass Index (kg/m^2) [Mean (Standard Deviation) ] | ||||
Mean (Standard Deviation) [kg/m^2] |
24.45
(4.124)
|
24.33
(3.762)
|
25.49
(4.869)
|
24.61
(4.130)
|
Categorical pain intensity score (Count of Participants) | ||||
None (0) |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
Mild (1) |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
Moderate (2) |
14
31.8%
|
11
25%
|
10
45.5%
|
35
31.8%
|
Severe (3) |
30
68.2%
|
33
75%
|
12
54.5%
|
75
68.2%
|
NRS pain intensity (Count of Participants) | ||||
0 = No pain |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
1 |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
2 |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
3 |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
4 |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
5 |
1
2.3%
|
1
2.3%
|
1
4.5%
|
3
2.7%
|
6 |
11
25%
|
7
15.9%
|
8
36.4%
|
26
23.6%
|
7 |
13
29.5%
|
12
27.3%
|
6
27.3%
|
31
28.2%
|
8 |
13
29.5%
|
18
40.9%
|
7
31.8%
|
38
34.5%
|
9 |
3
6.8%
|
5
11.4%
|
0
0%
|
8
7.3%
|
10 = Worst imaginable pain |
3
6.8%
|
1
2.3%
|
0
0%
|
4
3.6%
|
Outcome Measures
Title | Sum of Pain Intensity Difference From 0 to 24 Hours (SPID24) Based on the 11 Point Numeric Pain Rating Scale |
---|---|
Description | 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 = worst imaginable pain). Time weighted sum of pain intensity difference from 0 to 24 hours was reported. Pain Intensity (PI-NPRS) was collected at initiation of Dose 1 (T0) and post dose 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min). SPID24 was include all nominal timepoints from T0 to T24.25 hours. SPID is calculated as Σ[T(i) -T(i-1)] x [(PID(i-1) + PID(i))/2], where T(0)=0, T(i) is the scheduled time, and PID(i) is the pain intensity difference (PID) score at time i. Pain intensity differences were calculated with respect to Baseline. A baseline assessment is defined as the last non-missing result prior to administration of the first dose of study medication. |
Time Frame | Baseline (0.0) and 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min) hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 22 |
Least Squares Mean (Standard Error) [score on a scale] |
-96.80
(6.369)
|
-100.69
(6.333)
|
-74.96
(9.055)
|
Statistical Analysis 1
Statistical Analysis Overview | Comparison Group Selection | High Dose APAP, Placebo |
---|---|---|
Comments | ||
Type of Statistical Test | Superiority | |
Comments | ||
Statistical Test of Hypothesis | p-Value | 0.0258 |
Comments | ||
Method | ANCOVA | |
Comments | ||
Method of Estimation | Estimation Parameter | LS Mean Difference |
Estimated Value | -21.84 | |
Confidence Interval |
(1-Sided) 90% to -7.53 |
|
Parameter Dispersion |
Type: Standard Error of the Mean Value: 11.091 |
|
Estimation Comments | SPID24 was analyzed using ANCOVA model with treatment group as a fixed effect and baseline (BL) Pain Intensity-Numerical Pain Relief Scale (PI-NPRS) as a covariate. The lower limit of one-sided 90% confidence interval (CI) was -∞ |
Statistical Analysis 2
Statistical Analysis Overview | Comparison Group Selection | Low Dose APAP, Placebo |
---|---|---|
Comments | ||
Type of Statistical Test | Superiority | |
Comments | ||
Statistical Test of Hypothesis | p-Value | 0.0115 |
Comments | ||
Method | ANCOVA | |
Comments | ||
Method of Estimation | Estimation Parameter | LS Mean Difference |
Estimated Value | -25.74 | |
Confidence Interval |
(1-Sided) 90% to -11.35 |
|
Parameter Dispersion |
Type: Standard Error of the Mean Value: 11.154 |
|
Estimation Comments | SPID24 was analyzed using an analysis of covariance (ANCOVA) model with treatment group as a fixed effect and baseline PI-NPRS as a covariate. The lower limit of one-sided 90% CI was -∞ |
Title | Sum of Pain Relief From 0 to 24 Hours (TOTPAR24) Based on a 5-point Likert Scale. |
---|---|
Description | Pain Relief Rating (PR) was scored on a 5-point scale (0=no-, 1=a little-, 2=some-, 3=a lot of-, and 4=complete- PR). PR was collected at initiation of Dose 1 (T0) and post dose 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min) hours. TOTPAR24 is calculated as Sum ([T(i) - T(i-1)] x (PR(i-1) + PR(i)) / 2), where T(0)=0, T(i) is the actual time, and PR(i) is the pain relief score at time i. and calculated as Σ[T(i) -T(i-1)] x [(PR(i-1) + PR(i))/2], where T(0)=0, T(i) is the scheduled time, and PR(i) is the pain relief (PR) score at time i. |
Time Frame | Baseline (0.0) and 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 (± 10 min) hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 22 |
Mean (Standard Error) [score on a scale] |
55.82
(3.024)
|
55.24
(3.007)
|
43.11
(4.300)
|
Statistical Analysis 1
Statistical Analysis Overview | Comparison Group Selection | High Dose APAP, Placebo |
---|---|---|
Comments | ||
Type of Statistical Test | Superiority | |
Comments | ||
Statistical Test of Hypothesis | p-Value | 0.0087 |
Comments | ||
Method | ANCOVA | |
Comments | ||
Method of Estimation | Estimation Parameter | LS Mean Difference |
Estimated Value | 12.72 | |
Confidence Interval |
(1-Sided) 90% 5.92 to |
|
Parameter Dispersion |
Type: Standard Error of the Mean Value: 5.267 |
|
Estimation Comments | TOTPAR24 was analyzed using an ANCOVA model with treatment group as a fixed effect and baseline PI-NPRS as a covariate. The upper limit of one-sided 90% CI was +∞ |
Statistical Analysis 2
Statistical Analysis Overview | Comparison Group Selection | Low Dose APAP, Placebo |
---|---|---|
Comments | ||
Type of Statistical Test | Superiority | |
Comments | ||
Statistical Test of Hypothesis | p-Value | 0.0120 |
Comments | ||
Method | ANCOVA | |
Comments | ||
Method of Estimation | Estimation Parameter | LS Mean Difference |
Estimated Value | 12.14 | |
Confidence Interval |
(1-Sided) 90% 5.31 to |
|
Parameter Dispersion |
Type: Standard Error of the Mean Value: 5.297 |
|
Estimation Comments | TOTPAR24 was analyzed using an ANCOVA model with treatment group as a fixed effect and baseline PI-NPRS as a covariate. The upper limit of one-sided 90% CI was +∞ |
Title | Time to Perceptible Pain Relief Confirmed (FPR-C) After Dose 1 Administration Stratified by Baseline Pain Score of Moderate or Severe for the 3 Treatment Groups |
---|---|
Description | Upon initiation of the infusion of Dose 1, the participants were given stopwatch #1 and asked to press the stopwatch when they first perceived any pain relief (first perceptible pain relief [FPR]) ; a record of the time was noted in the participant record. If a participant does not record perceptible pain relief and prematurely discontinued from the study prior to 24 hours, then the participant was censored at time of drop out. If a participant does not record perceptible pain relief prior to taking rescue medication, the participant was censored at 24 hours |
Time Frame | 0 to 24 Hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Median time to FPR-C (hours)- for moderate baseline categorical pain intensity score |
0.215
|
0.160
|
0.595
|
Median time to FPR-C (hours)- for severe baseline categorical pain intensity score |
0.160
|
0.220
|
0.890
|
Title | Time to Meaningful Perceptible Relief (MPR) Measure Stratified by Baseline Pain Score of Moderate or Severe for the 3 Treatment Groups |
---|---|
Description | Upon initiation of the infusion of Dose 1, the participants were given a second stopwatch and asked to press the stopwatch if and when they feel any meaningful perceptible relief; a record of the time was noted in the participant record. If a participant does not record perceptible pain relief and was prematurely discontinued from the study prior to 24 hours, then the participant was censored at time of drop out. If a participant does not record perceptible pain relief prior to taking rescue medication, the participant was censored at 24 hours. |
Time Frame | 0 to 24 Hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Median time to MPR (hours)- for moderate baseline categorical pain intensity score |
0.660
|
0.310
|
NA
|
Median time to MPR (hours)- for severe baseline categorical pain intensity score |
0.680
|
0.870
|
NA
|
Title | Patient Global Evaluation of the Study Medication |
---|---|
Description | Patients Global Evaluation was assessed on a scale of 0 (Poor), 1 (Fair), 2 (Good), 3 (Very Good) and 4 (Excellent) at 24.25 hours post-dose 1 or at participant withdrawal (if applicable), whichever occurred first. Least squares mean of the score are reported. |
Time Frame | 0 to 24 Hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 42 | 44 | 21 |
Least Squares Mean (Standard Error) [score on a scale] |
2.8
(0.16)
|
2.7
(0.15)
|
2.3
(0.22)
|
Title | Pain Intensity Difference Rating (PID) at Different Timepoints After Dose 1 Administration |
---|---|
Description | 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 = worst imaginable pain). Pain intensity differences were calculated with respect to Baseline at each time point after Dose 1 administration. A baseline assessment was defined as the last non-missing result prior to administration of the first dose of study medication |
Time Frame | Baseline (0.0) and 0.5, 0.75, 1, 1.25, 1.75, 2.25 3.25, 4.25, 5.25, 6.25, 7.25, 8.25, 9.25, 10.25, 11.25, 12.25 (± 5 min) and 14.25, 16.25, 18.25, 20.25, 22.25, and 24.25 hours (± 10 min) |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 22 |
0.5 |
-2.5
(1.65)
|
-3.1
(2.01)
|
-0.7
(1.28)
|
0.75 |
-3.3
(1.88)
|
-3.5
(2.10)
|
-0.8
(1.40)
|
1 |
-3.7
(1.89)
|
-3.8
(2.12)
|
-0.8
(1.44)
|
1.25 |
-3.9
(2.02)
|
-4.0
(2.29)
|
-0.7
(1.52)
|
1.75 |
-3.9
(1.97)
|
-3.7
(2.45)
|
-0.7
(1.59)
|
2.25 |
-3.8
(2.16)
|
-3.6
(2.44)
|
-0.7
(1.67)
|
3.25 |
-3.4
(2.32)
|
-3.0
(2.39)
|
-0.9
(1.95)
|
4.25 |
-3.4
(2.40)
|
-2.9
(2.32)
|
-0.9
(1.97)
|
5.25 |
-3.3
(2.48)
|
-2.8
(2.39)
|
-2.4
(2.59)
|
6.25 |
-3.2
(2.48)
|
-3.5
(2.49)
|
-3.7
(2.32)
|
7.25 |
-3.0
(2.61)
|
-4.1
(2.34)
|
-4.2
(1.99)
|
8.25 |
-3.8
(2.72)
|
-4.4
(2.29)
|
-3.7
(2.36)
|
9.25 |
-4.5
(2.89)
|
-4.7
(2.18)
|
-3.6
(2.26)
|
10.25 |
-4.6
(2.71)
|
-5.0
(1.98)
|
-3.4
(2.22)
|
11.25 |
-4.7
(2.44)
|
-4.5
(1.99)
|
-3.3
(2.28)
|
12.25 |
-4.9
(1.85)
|
-4.5
(2.31)
|
-2.7
(2.27)
|
14.25 |
-3.7
(2.13)
|
-5.0
(2.42)
|
-2.9
(1.97)
|
16.25 |
-3.5
(2.29)
|
-4.4
(2.08)
|
-2.9
(1.97)
|
18.25 |
-4.4
(2.34)
|
-4.5
(2.27)
|
-3.5
(1.97)
|
20.25 |
-4.7
(2.04)
|
-4.9
(2.37)
|
-3.6
(2.24)
|
22.25 |
-4.7
(2.25)
|
-5.0
(2.35)
|
-3.9
(2.19)
|
24.25 |
-4.6
(2.29)
|
-5.1
(2.42)
|
-4.3
(1.86)
|
Title | Pain Intensity Rating at Different Timepoints After Dose 1 Administration |
---|---|
Description | Pain intensity is reported using the 11-point Numerical Rating Scale (NRS), with score between 0-10 (0= no pain; 10 = worst imaginable pain). |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 22 |
0.5 |
4.8
(1.83)
|
4.4
(1.97)
|
6.1
(1.42)
|
0.75 |
4.0
(2.12)
|
4.0
(1.98)
|
6.0
(1.70)
|
1 |
3.6
(1.98)
|
3.7
(2.01)
|
6.0
(1.68)
|
1.25 |
3.4
(2.16)
|
3.5
(2.14)
|
6.2
(1.89)
|
1.75 |
3.5
(2.24)
|
3.8
(2.33)
|
6.2
(1.94)
|
2.25 |
3.6
(2.40)
|
3.9
(2.39)
|
6.2
(1.97)
|
3.25 |
3.9
(2.53)
|
4.5
(2.48)
|
6.0
(2.17)
|
4.25 |
4.0
(2.58)
|
4.6
(2.33)
|
6.0
(2.21)
|
5.25 |
4.0
(2.48)
|
4.7
(2.44)
|
4.5
(2.56)
|
6.25 |
4.2
(2.52)
|
4.0
(2.59)
|
3.2
(2.11)
|
7.25 |
4.3
(2.46)
|
3.4
(2.22)
|
2.7
(1.86)
|
8.25 |
3.5
(2.58)
|
3.1
(2.20)
|
3.2
(2.30)
|
9.25 |
2.9
(2.71)
|
2.8
(1.95)
|
3.3
(2.25)
|
10.25 |
2.8
(2.48)
|
2.5
(1.68)
|
3.5
(2.15)
|
11.25 |
2.7
(2.27)
|
3.0
(1.66)
|
3.5
(2.24)
|
12.25 |
2.5
(1.83)
|
3.0
(2.09)
|
4.1
(2.32)
|
14.25 |
3.6
(2.29)
|
2.5
(2.11)
|
4.0
(2.08)
|
16.25 |
3.8
(2.55)
|
3.1
(2.01)
|
4.0
(2.21)
|
18.25 |
2.9
(2.58)
|
3.0
(2.23)
|
3.4
(1.99)
|
20.25 |
2.7
(2.28)
|
2.6
(2.14)
|
3.2
(2.22)
|
22.25 |
2.6
(2.58)
|
2.5
(1.96)
|
3.0
(2.16)
|
24.25 |
2.8
(2.38)
|
2.4
(2.06)
|
2.61
(1.71)
|
Title | Pain Relief (PR) Ratings at Each Observation Time After Dose 1 Administration |
---|---|
Description | Pain Relief is reported on a 5-Point Categorical Pain Relief Assessment scale: 0 = No Pain Relief, 1 = A Little Pain Relief, 2 = Some Pain Relief, 3 = A Lot of Pain Relief, 4 = Complete Pain Relief. |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 22 |
0.5 |
1.7
(0.95)
|
1.8
(0.94)
|
0.6
(0.85)
|
0.75 |
2.0
(1.02)
|
2.0
(0.98)
|
0.6
(0.85)
|
1 |
2.1
(0.93)
|
2.2
(0.96)
|
0.6
(0.85)
|
1.25 |
2.3
(0.97)
|
2.2
(0.99)
|
0.6
(0.85)
|
1.75 |
2.3
(0.97)
|
2.0
(1.07)
|
0.6
(0.90)
|
2.25 |
2.2
(1.09)
|
2.0
(1.05)
|
0.6
(0.90)
|
3.25 |
2.0
(1.18)
|
1.7
(1.12)
|
0.8
(1.15)
|
4.25 |
2.0
(1.21)
|
1.6
(1.12)
|
0.7
(1.08)
|
5.25 |
1.9
(1.20)
|
1.5
(1.21)
|
1.5
(1.44)
|
6.25 |
1.9
(1.23)
|
1.9
(1.15)
|
2.1
(1.25)
|
7.25 |
1.8
(1.21)
|
2.2
(1.03)
|
2.5
(1.10)
|
8.25 |
2.2
(1.15)
|
2.4
(1.06)
|
2.2
(1.27)
|
9.25 |
2.6
(1.22)
|
2.5
(0.93)
|
2.1
(1.19)
|
10.25 |
2.6
(1.10)
|
2.7
(0.80)
|
2.0
(1.20)
|
11.25 |
2.7
(0.97)
|
2.5
(0.87)
|
2.0
(1.31)
|
12.25 |
2.7
(0.83)
|
2.4
(1.04)
|
1.6
(1.33)
|
14.25 |
2.1
(1.00)
|
2.6
(1.04)
|
1.8
(1.11)
|
16.25 |
2.1
(1.14)
|
2.3
(1.06)
|
1.8
(1.14)
|
18.25 |
2.5
(1.10)
|
2.4
(1.02)
|
2.1
(1.17)
|
20.25 |
2.7
(1.00)
|
2.6
(0.95)
|
2.2
(1.18)
|
22.25 |
2.7
(1.11)
|
2.6
(0.94)
|
2.3
(1.09)
|
24.25 |
2.5
(1.12)
|
2.7
(0.99)
|
2.5
(0.91)
|
Title | Time to Treatment Failure |
---|---|
Description | Time to treatment failure is defined as time to first dose of rescue medication after Dose 1 or withdrawal from the study for any reason. If a participant does not take rescue medication or withdraw from the study prior to 24 hours, the participant was censored at 24 hours |
Time Frame | 0 to 24 Hours |
Outcome Measure Data
Analysis Population Description |
---|
The Evaluable Population included all randomized participant who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Median time to treatment failure- for moderate baseline categorical pain intensity score |
NA
|
NA
|
3.680
|
Median time to treatment failure for severe baseline categorical pain intensity score |
NA
|
NA
|
1.335
|
Title | Mean Change From Baseline to 24 Hours in Vital Signs (Systolic Blood Pressure) |
---|---|
Description | Change from Baseline in systolic blood pressure is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Systolic blood pressure is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min). |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Safety Population included all randomized participants who received the study medication. This population was used for all safety summaries. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Mean (Standard Deviation) [mm Hg] |
1.6
(10.78)
|
1.0
(11.39)
|
9.2
(10.99)
|
Title | Mean Change From Baseline to 24 Hours in Vital Signs (Diastolic Blood Pressure) |
---|---|
Description | Change from Baseline in diastolic blood pressure is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Diastolic blood pressure is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min) |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Safety Population included all randomized participants who received the study medication. This population was used for all safety summaries. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Mean (Standard Deviation) [mm Hg] |
-0.2
(8.82)
|
2.3
(9.56)
|
5.2
(11.08)
|
Title | Mean Change From Baseline to 24 Hours in Vital Signs (Temperature) |
---|---|
Description | Change from Baseline in temperature is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Temperature is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min) |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Safety Population included all randomized participants who received the study medication. This population was used for all safety summaries. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Mean (Standard Deviation) [degrees Celsius] |
0.12
(0.336)
|
0.21
(0.275)
|
0.06
(0.347)
|
Title | Mean Change From Baseline to 24 Hours in Vital Signs (Pulse Rate) |
---|---|
Description | Change from Baseline in pulse rate is the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Pulse rate is obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min) |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Safety Population included all randomized participants who received the study medication. This population was used for all safety summaries. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 44 | 21 |
Mean (Standard Deviation) [beats/minute] |
5.0
(11.85)
|
4.2
(11.58)
|
5.7
(11.17)
|
Title | Mean Change From Baseline to 24 Hours in Vital Signs (Respiratory Rate) |
---|---|
Description | Change from Baseline in respiratory rate was the value at 24 hours minus value at Baseline. Baseline was defined as the last non-missing result prior to administration of the first dose of study drug. Respiratory rate was obtained at screening, prior to surgery and at Hours 4, 8, 12, 16, 20 and 24 following initiation of dose (±10 min) |
Time Frame | 0 to 24 hours |
Outcome Measure Data
Analysis Population Description |
---|
The Safety Population included all randomized participants who received the study medication. This population was used for all safety summaries. |
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo |
---|---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively |
Measure Participants | 43 | 43 | 21 |
Mean (Standard Deviation) [breaths/minute] |
0.3
(3.39)
|
-0.6
(4.12)
|
-1.3
(3.68)
|
Title | Area Under the Plasma Concentration-Time Curve From Time of Administration to 24 Hours After Dosing (AUC 0-24h) |
---|---|
Description | The Area Under the Plasma Concentration-Time Curve (AUC) is a measure of the plasma concentration of the drug over time. It is used to characterize drug absorption. The values for pharmacokinetic (PK) evaluable population-excluding participants with positive pre-dose concentrations have been populated. The samples were collected at 5 min prior to Dose 1, and at 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose 1. |
Time Frame | Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose |
Outcome Measure Data
Analysis Population Description |
---|
The PK Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1 resulting in an adequate number of quantifiable concentrations to calculate PK parameters. |
Arm/Group Title | High Dose APAP | Low Dose APAP |
---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose |
Measure Participants | 31 | 38 |
Least Squares Mean (Standard Error) [microgram*hour/milliliter] |
236326.3081
(1.06026)
|
231104.0073
(1.05427)
|
Title | Area Under the Plasma Concentration-Time Curve From Time Zero to Infinite Time (AUC[0-infinity]) |
---|---|
Description | The AUC(0-infinity) is area under the plasma concentration-time curve from time zero to infinite time. The samples were collected at 5 min prior to Dose 1, and at 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose 1. |
Time Frame | Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose |
Outcome Measure Data
Analysis Population Description |
---|
The PK Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1 resulting in an adequate number of quantifiable concentrations to calculate PK parameters |
Arm/Group Title | High Dose APAP | Low Dose APAP |
---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose |
Measure Participants | 42 | 43 |
Geometric Mean (Geometric Coefficient of Variation) [hour*nanogram per milliliter] |
75925.2553
(22.405)
|
55018.1382
(27.089)
|
Title | Half-life |
---|---|
Description | The half-life (t 1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. |
Time Frame | Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose |
Outcome Measure Data
Analysis Population Description |
---|
The PK Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1 resulting in an adequate number of quantifiable concentrations to calculate PK parameters |
Arm/Group Title | High Dose APAP | Low Dose APAP |
---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose |
Measure Participants | 42 | 43 |
Mean (Standard Deviation) [hours] |
2.565
(0.5774)
|
2.360
(0.4134)
|
Title | Maximum Observed Plasma Concentration (Cmax) |
---|---|
Description | The Plasma Concentration (Cmax) is defined as maximum observed concentration |
Time Frame | Pre-dose, and 0.25, 0.5, 0.75, 1.0, 2.0, 4.0, 6.25, 8.0, 8.25, 8.25, 12.0, 12.25, 16.0, 16.25, 18.0, 18.25, 24.25 hours post-dose |
Outcome Measure Data
Analysis Population Description |
---|
The PK Evaluable Population included all randomized participants who, as documented prior to the breaking of the study blind: (1) met all the inclusion and exclusion criteria and; (2) were administered Dose 1 resulting in an adequate number of quantifiable concentrations to calculate PK parameters |
Arm/Group Title | High Dose APAP | Low Dose APAP |
---|---|---|
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose |
Measure Participants | 31 | 39 |
Geometric Mean (Geometric Coefficient of Variation) [nanogram per milliliter (ng/ml)] |
39531.4
(26)
|
28495.6
(30)
|
Adverse Events
Time Frame | Up to 7 days (± 2 days) | |||||
---|---|---|---|---|---|---|
Adverse Event Reporting Description | An adverse event (AE) is defined as any untoward medical occurrence and does not necessarily have to have causal relationship with the study medication. An AE can therefore be an unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease, which is a change from baseline and is temporally associated with the use of the study medication, whether or not it is considered related to the study medication. | |||||
Arm/Group Title | High Dose APAP | Low Dose APAP | Placebo | |||
Arm/Group Description | Acetaminophen (APAP) administered post-operatively at a high dose | Acetaminophen (APAP) administered post-operatively at a low dose | Placebo given post-operatively | |||
All Cause Mortality |
||||||
High Dose APAP | Low Dose APAP | Placebo | ||||
Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
Total | 0/44 (0%) | 0/44 (0%) | 0/22 (0%) | |||
Serious Adverse Events |
||||||
High Dose APAP | Low Dose APAP | Placebo | ||||
Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
Total | 0/44 (0%) | 0/44 (0%) | 0/22 (0%) | |||
Other (Not Including Serious) Adverse Events |
||||||
High Dose APAP | Low Dose APAP | Placebo | ||||
Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
Total | 9/44 (20.5%) | 13/44 (29.5%) | 7/22 (31.8%) | |||
Cardiac disorders | ||||||
Tachycardia | 0/44 (0%) | 0 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Gastrointestinal disorders | ||||||
Hypoaesthesia oral | 0/44 (0%) | 0 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Nausea | 1/44 (2.3%) | 1 | 1/44 (2.3%) | 1 | 1/22 (4.5%) | 1 |
General disorders | ||||||
Infusion site extravasation | 1/44 (2.3%) | 1 | 0/44 (0%) | 0 | 0/22 (0%) | 0 |
Infusion site haematoma | 1/44 (2.3%) | 1 | 0/44 (0%) | 0 | 0/22 (0%) | 0 |
Pyrexia | 1/44 (2.3%) | 1 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Hepatobiliary disorders | ||||||
Hyperbilirubinaemia | 7/44 (15.9%) | 7 | 8/44 (18.2%) | 8 | 6/22 (27.3%) | 6 |
Infections and infestations | ||||||
Postoperative wound infection | 0/44 (0%) | 0 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Injury, poisoning and procedural complications | ||||||
Arthropod bite | 0/44 (0%) | 0 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Musculoskeletal and connective tissue disorders | ||||||
Arthralgia | 0/44 (0%) | 0 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Nervous system disorders | ||||||
Dizziness | 0/44 (0%) | 0 | 0/44 (0%) | 0 | 1/22 (4.5%) | 1 |
Headache | 0/44 (0%) | 0 | 0/44 (0%) | 0 | 1/22 (4.5%) | 1 |
Respiratory, thoracic and mediastinal disorders | ||||||
Rhinorrhoea | 0/44 (0%) | 0 | 1/44 (2.3%) | 1 | 0/22 (0%) | 0 |
Limitations/Caveats
More Information
Certain Agreements
Principal Investigators are NOT employed by the organization sponsoring the study.
There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.
Results Point of Contact
Name/Title | Eric Lang, MD |
---|---|
Organization | Nevakar, Inc. |
Phone | (908) 367-7400 |
Clinicaltrials@nevakar.com |
- CP-NVK009-0002