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Recovery Following CholecystectomyPhase 4NCT02832687

Multi-dose Acetaminophen for Patients Undergoing General Anesthesia

A Phase 4 study testing Acetaminophen and normal saline in people with Recovery Following Cholecystectomy, run by Rutgers, The State University of New Jersey at 3 sites in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial 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… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Recovery Following Cholecystectomy
What is being tested?
Acetaminophen and normal saline
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
88 participants
Where
3 sitesUnited States
Study dates
19 Jun 2017to 31 Dec 2020
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Undergoing ambulatory laparoscopic cholecystectomy.
  • American Society of Anesthesiologists physical status 1, 2 or 3.-

Who cannot join

  • 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

Trial locations and contacts

3 sites in 1 country.

United States3 sites
  • New York Methodist Hospital

    Brooklyn, New York, 11215

  • New Jersey Medical School

    Newark, New Jersey, 07103

  • University Hospital

    Newark, New Jersey, 07103

Other trials in United States

About this study

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

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.

Read the 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:
  6. 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.
  7. 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).
  8. 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
Being tested
Acetaminophen, normal saline

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AcetaminophenDrug

    Also called Ofirmev

    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.

  • normal salineDrug

    Also called placebo

    100mL of normal saline every 4 hours to a maximum administration of 400mL

Study groups in NCT02832687
Study groupRoleWhat they receive
normal salineActive comparatorPatients 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.
Receives: Drug: normal saline
acetaminophenExperimentalPatients 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
Receives: Drug: Acetaminophen

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Readiness for Discharge

    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.

    Measured: 2 hours following surgery

Secondary outcomes (8)
  1. Post Operative Pain Scores

    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.

    Measured: Every 15 min for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour

  2. Plasma Stress Markers

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

    Measured: 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)

  3. The Level of C-reactive Protein

    Concentration of the plasma C-reactive protein (CRP)

    Measured: 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)

  4. Time to Rescue Pain Medication

    Time to the first dose of pain medication

    Measured: 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.

  5. Total Dosage of Post Operative Opioids

    Total dosage of post operative opioids (hydromorphone)

    Measured: From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour.

  6. Patient Satisfaction Survey

    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.

    Measured: 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).

  7. Number of Participants With Post Operative Nausea and Vomiting

    Number of Participants with Post Operative Nausea and Vomiting

    Measured: From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour

  8. Number of Participants Requiring Additional Anti-emetics

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

    Measured: From arrival in PACU for 2 hours or until achieving discharge-readiness, whatever comes first, an average of 1 hour

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Jul 2016 (estimated)
  2. Study start19 Jun 2017
  3. Primary completion1 Sep 2020
  4. Study completion31 Dec 2020

Why it stopped: The study was halted due to the worldwide COVID-19 pandemic and the cancellation of all elective cases.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Supportive care
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
88 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02832687
Sponsor's protocol ID
20150002613
Status last verified
May 2026
First submitted
24 May 2016
Last updated
8 Jun 2026
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Acetaminophen and normal saline in people with Recovery Following Cholecystectomy, run by Rutgers, The State University of New Jersey at 3 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 8 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 9 Dec 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Readiness for Discharge (time frame: 2 hours following surgery). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jun 2026.

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