Multi-dose Acetaminophen for Patients Undergoing General Anesthesia

Sponsor
Rutgers, The State University of New Jersey (Other)
Overall Status
Terminated
CT.gov ID
NCT02832687
Collaborator
Mallinckrodt (Industry)
88
3
2
42.4
29.3
0.7

Study Details

Study Description

Brief Summary

Study Objective The aim of the proposed study is to examine the effect of Q4 hour multidose IV acetaminophen on patients' readiness for discharge. In doing so the investigators will also investigate the various factors that could potentially contribute to a patient's readiness for discharge such as overall opioid consumption, time to rescue medication, incidence of postoperative nausea and vomiting, pain scores, and perioperative stress markers and their overall correlation with IV acetaminophen intake.

Condition or Disease Intervention/Treatment Phase
Phase 4

Detailed Description

This is a randomized, double-blind, placebo-controlled, two-arm parallel study.. Patients 50kg or more will receive either 1000mg IV acetaminophen or placebo with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours.

After pre-oxygenation, general anesthesia will be induced with lidocaine (1 mg/kg Ideal Body Weight), propofol (1-2 mg/kg Actual Body Weight), and fentanyl (up to 5 mcg/kg Actual Body Weight). Additionally all subjects with receive 2 mg midazolam. Tracheal intubation will be facilitated with rocuronium (0.6 - 1.2 mg/kg Actual Body Weight). Anesthesia will be maintained with air/oxygen (60%/40%) and desflurane. A remifentanyl infusion (0.05-2mcg/kg/min Ideal Body Weight) will be continued throughout the entire case with no further analgesics being administered. All patients will receive ondansetron 4 mg prior to the end of operation as well as additional antiemetics in the PACU as judged by the attending anesthesiologist. Patients will be awakened and extubated in the OR meeting standard extubation criteria. Once extubated all patients will then be transferred to the PACU where they will be assessed via the SPEEDs criteria 5 minutes after arrival and then every 15 minutes for the duration of their PACU stay. While in the PACU, all patients will be assessed for pain using the Visual Analog Scale. Pain will be treated as per our protocol with 0.2mg IV hydromorphone for mild pain (VAS 1-3), 0.4 mg IV hydromorphone for moderate pain (VAS 4-6), and 0.6 mg IV hydromorphone (VAS 7-10). As soon as a patient meets all the SPEEDs criteria he/she will be transferred to phase II of the recovery. In phase II, if need be, pain will be managed according to the following orders: 0.2mg intravenous hydromorphone for mild pain (VAS 1-3), 0.4 mg intravenous hydromorphone for moderate pain (VAS 4-6) and 0.6mg intravenous hydromorphone for severe pain (VAS 7-10).

The patient's readiness for discharge will be our primary outcome. Each patient will be assessed within 5 minutes of arriving in the PACU and then every 15 minutes thereafter until subject reaches maximum score. The assessment will be done using the SPEEDs criteria, which has recently been shown to be as specific and more sensitive for phase 1 nursing interventions and therefore more accurate in predicting which patients are fast-track eligible as compared to the standard Modified Aldrete 2 and Fast-Track criteria (38).

The secondary outcomes will include:
  1. Post-operative pain scores a. Assessed every 15 minutes during the recovery period using the Visual and Numerical Analog Scales for 2 hours and then every 4 hours thereafter until discharge.

  2. Time to first rescue medication a. 0.2mg intravenous hydromorphone for mild pain (VAS 1-3) b. 0.4mg intravenous hydromorphone for moderate pain (VAS 4-6) c. 0.6 mg intravenous hydromorphone for severe pain (VAS 7-10)

  3. Total dosage of post-operative opioids given.

  4. Incidence of post operative nausea and vomiting and need for additional antiemetics.

  5. Phase II satisfaction survey:

  1. This will focus on three of the following factors rated on a scale of 1 to 5, with 1 being dissatisfied/unlikely while 5 being most satisfied/very likely.

  2. How satisfied are you with the overall experience? ii. How likely are you to recommend this anesthetic and analgesic to others? iii. How likely would you ask for a similar anesthetic and analgesic in the future if need be? f) Concentration of the plasma stress markers including cortisol, norepinephrine, epinephrine, and C Reactive Protein (CRP).

  3. Changes in mediator levels in the IV acetaminophen versus placebo groups will be compared. Plasma samples will be collected before administration of any drug (after placement of IV lines), before incision, and 60 minutes after arrival in PACU. Blood [15millLiters] will be collected at the time points described above from an additional intravenous catheter placed in the patient's arm. These specimens will be placed in vacutainer tubes with no anti-coagulant. Blood will be drawn with a syringe attached directly to the angiocatheter which has been placed intravenously. To prevent hemolysis, blood will be transferred without a needle, to a vacutainer whose top has been removed. The vacutainer top will be replaced and specimens labeled with study name, subject's study IDentification number, sample number (1, 2, 3,), and dated. Bloods from the first two time points will be kept refrigerated until the final sample is obtained postoperatively. They will be centrifuged, serum removed, aliquoted and stored at -80 degrees C until analysis. All samples will be run in duplicate on with plates and reagents of the same lot. Any samples varying greater than 15% between duplicates

Study Design

Study Type:
Interventional
Actual Enrollment :
88 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose:
Supportive Care
Official Title:
A Multi-center, Randomized, Double-blind, Pilot Study on the Effect of Intravenous Multi-dose Acetaminophen on Readiness for Discharge in Patients Undergoing Surgery With General Anesthesia
Actual Study Start Date :
Jun 19, 2017
Actual Primary Completion Date :
Sep 1, 2020
Actual Study Completion Date :
Dec 31, 2020

Arms and Interventions

Arm Intervention/Treatment
Active Comparator: normal saline

Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist.

Drug: normal saline
100mL of normal saline every 4 hours to a maximum administration of 400mL
Other Names:
  • placebo
  • Experimental: acetaminophen

    Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline

    Drug: Acetaminophen
    patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Other Names:
  • Ofirmev
  • Outcome Measures

    Primary Outcome Measures

    1. Readiness for Discharge [2 hours following surgery]

      Number (percentage) of Participants with Readiness for Discharge (achieving discharge-readiness status at end of 2- hours post-surgery evaluated using the SPEEDs criteria: oxygen saturation, pain control, emesis control, extremity movement, dialogue, and stable vital signs.

    Secondary Outcome Measures

    1. Post Operative Pain Scores [Every 15 min for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour]

      Pain scores every 15 min for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour. Visual Analogue Scale (VAS) for pain was used: score on a scale from 0 (no pain) to 10 (worst pain) were recorded.

    2. Plasma Stress Markers [Before administration of any drug (after placement of intravenous (IV) line), before surgical incision (in operating room (OR)), and 1 h after arrival in post-anesthesia care unit (PACU)]

      Concentration of the plasma stress markers including epinephrine, norepinephrine, cortisol, interleukins (IL) 6, 8 and 10.

    3. The Level of C-reactive Protein [Before administration of any drug (after placement of intravenous (IV) line), before surgical incision (in operating room (OR)), and 1 h after arrival in post-anesthesia care unit (PACU)]

      Concentration of the plasma C-reactive protein (CRP)

    4. Time to Rescue Pain Medication [From arrival in PACU to the first dose of pain medication is given during 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour.]

      Time to the first dose of pain medication

    5. Total Dosage of Post Operative Opioids [From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour.]

      Total dosage of post operative opioids (hydromorphone)

    6. Patient Satisfaction Survey [For patients going home the day of surgery the survey is given prior to departing the hospital (approx 5 hours post surgery). For those being admitted, the survey is given once discharge criteria are met in the PACU (approx 3 hours post surgery).]

      Survey asking patients about their satisfaction with the experience, pain control, and anesthetic rated on a 5 point Likert scale, with 1 being dissatisfied/unlikely and 5 being most satisfied/very likely. Subscales were summed to receive total score.

    7. Number of Participants With Post Operative Nausea and Vomiting [From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour]

      Number of Participants with Post Operative Nausea and Vomiting

    8. Number of Participants Requiring Additional Anti-emetics [From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour]

      Number of Participants Requiring Additional Anti-emetics (anti-vomiting)

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Undergoing ambulatory laparoscopic cholecystectomy.

    • American Society of Anesthesiologists physical status 1, 2 or 3.-

    Exclusion Criteria -

    • Cognitively impaired (by history) and unable or unwilling to consent

    • Chronic steroid or opioid user (as prescribed for a chronic systemic illness)

    • Parturient or nursing mother. Patients who have been informed by a physician that they have liver or kidney disease

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 New Jersey Medical School Newark New Jersey United States 07103
    2 University Hospital Newark New Jersey United States 07103
    3 New York Methodist Hospital Brooklyn New York United States 11215

    Sponsors and Collaborators

    • Rutgers, The State University of New Jersey
    • Mallinckrodt

    Investigators

    • Principal Investigator: Michal Gajewski, Do, Rutgers, State University of New Jersey

    Study Documents (Full-Text)

    More Information

    Publications

    None provided.
    Responsible Party:
    Michal Gajewski, Assistant Professor, Rutgers, The State University of New Jersey
    ClinicalTrials.gov Identifier:
    NCT02832687
    Other Study ID Numbers:
    • 20150002613
    First Posted:
    Jul 14, 2016
    Last Update Posted:
    Dec 9, 2021
    Last Verified:
    Nov 1, 2021
    Individual Participant Data (IPD) Sharing Statement:
    No
    Plan to Share IPD:
    No
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details Planned enrollment was "90" whereas the actual enrollment was "88".
    Pre-assignment Detail At the time when recruitment reached 88 subject, elective surgeries at our institution were paused because of pandemic. However, when elective surgeries were resumed, Mallinckrodt, Inc. who provided support for the study filed for bankruptcy and we were not longer able to continue recruitment.
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Period Title: Overall Study
    STARTED 41 47
    Participants Who Were Included in the Analysis 31 34
    COMPLETED 41 45
    NOT COMPLETED 0 2

    Baseline Characteristics

    Arm/Group Title Normal Saline Acetaminophen Total
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours. Total of all reporting groups
    Overall Participants 31 34 65
    Age (years) [Median (Inter-Quartile Range) ]
    Median (Inter-Quartile Range) [years]
    40
    44
    42
    Sex: Female, Male (Count of Participants)
    Female
    26
    83.9%
    25
    73.5%
    51
    78.5%
    Male
    5
    16.1%
    9
    26.5%
    14
    21.5%
    Race/Ethnicity, Customized (Count of Participants)
    Black
    5
    16.1%
    11
    32.4%
    16
    24.6%
    White
    3
    9.7%
    4
    11.8%
    7
    10.8%
    Hispanic
    23
    74.2%
    19
    55.9%
    42
    64.6%
    Region of Enrollment (Count of Participants)
    United States
    31
    100%
    34
    100%
    65
    100%
    ASA Physical Status (Count of Participants)
    The American Society of Anesthesiologists (ASA) Physical Status I (Patient is healthy)
    12
    38.7%
    6
    17.6%
    18
    27.7%
    ASA Physical Status II (Patient has mild systemic disease)
    18
    58.1%
    26
    76.5%
    44
    67.7%
    ASA Physical Status III (Patient has severe systemic disease that is not incapacitating)
    1
    3.2%
    2
    5.9%
    3
    4.6%

    Outcome Measures

    1. Primary Outcome
    Title Readiness for Discharge
    Description Number (percentage) of Participants with Readiness for Discharge (achieving discharge-readiness status at end of 2- hours post-surgery evaluated using the SPEEDs criteria: oxygen saturation, pain control, emesis control, extremity movement, dialogue, and stable vital signs.
    Time Frame 2 hours following surgery

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Count of Participants [Participants]
    26
    83.9%
    33
    97.1%
    2. Secondary Outcome
    Title Post Operative Pain Scores
    Description Pain scores every 15 min for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour. Visual Analogue Scale (VAS) for pain was used: score on a scale from 0 (no pain) to 10 (worst pain) were recorded.
    Time Frame Every 15 min for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour

    Outcome Measure Data

    Analysis Population Description
    Not all participants were analyzed at every time point up to 120 minutes but only until participants were achieving discharge-readiness criteria.
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    15 minutes
    9
    7
    30 minutes
    8
    7
    45 minutes
    7
    6
    60 minutes
    5
    4
    75 minutes
    5
    4
    90 minutes
    5
    3
    105 minutes
    5
    3
    120 minutes
    6.5
    3
    3. Secondary Outcome
    Title Plasma Stress Markers
    Description Concentration of the plasma stress markers including epinephrine, norepinephrine, cortisol, interleukins (IL) 6, 8 and 10.
    Time Frame Before administration of any drug (after placement of intravenous (IV) line), before surgical incision (in operating room (OR)), and 1 h after arrival in post-anesthesia care unit (PACU)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Epinephrine After IV
    48
    65
    Epinephrine In OR
    42
    58
    Epinephrine 1h in PACU
    152
    128
    Norepinephrine After IV
    643
    644
    Norepinephrine In OR
    532
    547
    Norepinephrine 1h in PACU
    689
    884
    Cortisol After IV
    50.5
    54.6
    Cortisol in OR
    45.6
    49
    Cortisol 1h in PACU
    175.9
    150.1
    IL-6 after IV
    1.4
    2.3
    IL-6 in OR
    1.6
    2
    IL-6 1h in PACU
    7.9
    9.9
    IL-8 after IV
    8.7
    8.3
    IL-8 in OR
    6.6
    6.4
    IL-8 1h in PACU
    13.7
    12.5
    IL-10 after IV
    0.6
    1
    IL-10 in OR
    0.5
    1.9
    IL-10 1h in PACU
    1.9
    1.9
    4. Secondary Outcome
    Title The Level of C-reactive Protein
    Description Concentration of the plasma C-reactive protein (CRP)
    Time Frame Before administration of any drug (after placement of intravenous (IV) line), before surgical incision (in operating room (OR)), and 1 h after arrival in post-anesthesia care unit (PACU)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    CRP after IV
    1062.6
    1710.9
    CRP in OR
    893.4
    1410.7
    CRP 1h in PACU
    746.6
    1090.1
    5. Secondary Outcome
    Title Time to Rescue Pain Medication
    Description Time to the first dose of pain medication
    Time Frame From arrival in PACU to the first dose of pain medication is given during 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour.

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Median (Inter-Quartile Range) [minutes]
    19
    23
    6. Secondary Outcome
    Title Total Dosage of Post Operative Opioids
    Description Total dosage of post operative opioids (hydromorphone)
    Time Frame From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour.

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Median (Inter-Quartile Range) [mg]
    1.2
    1
    7. Secondary Outcome
    Title Patient Satisfaction Survey
    Description Survey asking patients about their satisfaction with the experience, pain control, and anesthetic rated on a 5 point Likert scale, with 1 being dissatisfied/unlikely and 5 being most satisfied/very likely. Subscales were summed to receive total score.
    Time Frame For patients going home the day of surgery the survey is given prior to departing the hospital (approx 5 hours post surgery). For those being admitted, the survey is given once discharge criteria are met in the PACU (approx 3 hours post surgery).

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Median (Inter-Quartile Range) [score on a scale]
    4
    4
    8. Secondary Outcome
    Title Number of Participants With Post Operative Nausea and Vomiting
    Description Number of Participants with Post Operative Nausea and Vomiting
    Time Frame From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Count of Participants [Participants]
    9
    29%
    10
    29.4%
    9. Secondary Outcome
    Title Number of Participants Requiring Additional Anti-emetics
    Description Number of Participants Requiring Additional Anti-emetics (anti-vomiting)
    Time Frame From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    Measure Participants 31 34
    Count of Participants [Participants]
    8
    25.8%
    7
    20.6%

    Adverse Events

    Time Frame From the time patient sign Informed Consent Form for 24 hours or until discharge from the hospital, whatever comes first, an average of 12 hours
    Adverse Event Reporting Description
    Arm/Group Title Normal Saline Acetaminophen
    Arm/Group Description Patients will receive 100 milliliters of normal saline with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses in 24 hours. Blinded medication will be prepared by research pharmacist. normal saline: 100mL of normal saline every 4 hours to a maximum administration of 400mL Patients 50kg or more will receive either 1000mg IV acetaminophen with the first dose given preoperatively in the holding area followed by re-dosing every four hours from that point up to a maximum of 4 doses or 4000mg in 24 hours. Patients <50 kg will receive 12.5mg/kg to a maximum of 75 mg /per kg/per day as per the label dose with repeat dosing Q4 hours. Blinded medication will be prepared by research pharmacist in 100mL of normal saline Acetaminophen: patients 50kg or more receive1000mg in 100milliliters of normal saline every 4 hours to a maximum dose 4000mg/24 hours. <50kg receive 12.5mg/kg to a maximum of 75mg/kg/24 hours.
    All Cause Mortality
    Normal Saline Acetaminophen
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/41 (0%) 0/47 (0%)
    Serious Adverse Events
    Normal Saline Acetaminophen
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/41 (0%) 0/47 (0%)
    Other (Not Including Serious) Adverse Events
    Normal Saline Acetaminophen
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/41 (0%) 2/47 (4.3%)
    Surgical and medical procedures
    Surgical complication 0/41 (0%) 0 2/47 (4.3%) 2

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    There is NOT 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 Dr. Michal Gajewski, DO
    Organization CHRISTUS St. Vincent Regional Medical Center
    Phone (505) 913-3361
    Email Michal.Gajewski@stvin.org
    Responsible Party:
    Michal Gajewski, Assistant Professor, Rutgers, The State University of New Jersey
    ClinicalTrials.gov Identifier:
    NCT02832687
    Other Study ID Numbers:
    • 20150002613
    First Posted:
    Jul 14, 2016
    Last Update Posted:
    Dec 9, 2021
    Last Verified:
    Nov 1, 2021