Pain, PostoperativePhase 4IV TylenolNCT03020966
IV vs. Oral Acetaminophen as a Component of Multimodal Analgesia After Total Hip Arthroplasty
A Phase 4 study testing Acetaminophen in people with Pain, Postoperative and Opioid Use, run by Hospital for Special Surgery, New York at 1 site in United States.
Trial summary
The purpose of this study is to determine how well two different methods of administrating Tylenol reduce pain and improve patient satisfaction after total hip replacement (THR) surgery. The methods of administration are orally, via a pill that is to be swallowed, and intravenously. Read more about this study
- Who is it for?
- Ages 18 to 90 years
- Conditions the study is for
- Pain, Postoperative, Opioid Use
- What is being tested?
- Acetaminophen
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 154 participants
- Where
- 1 siteUnited States
- Study dates
- 16 Feb 2017to 16 Jun 2019
- 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 to 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult
- Scheduled for an elective primary THA with a participating surgeon,
- Planned for Combined Spinal Epidural anesthesia (CSE) and Patient Controlled Epidural Analgesia (PCEA)
- English-speaking
- Patients that did not receive pre-operative opioids
Who cannot join
- Hepatic or renal insufficiency, as defined by abnormal readings on liver and kidney functioning tests.
- Hypersensitivity or contraindication to protocol medication
- Contraindication for CSE and PCEA
- Incapable to provide consent/answer questions in English
- Revision or urgent surgery
- Receiving Periarticular Injections
- History of opioid use
- Patients on disability or worker's compensation
Trial locations and contacts
1 site in 1 country.
United States1 site
Hospital for Special Surgery
New York, New York, 10021
About this study
Official title: IV vs. Oral Acetaminophen as a Component of Multimodal Analgesia After Total Hip Arthroplasty: a Randomized, Blinded Trial
The purpose of this study is to determine how well two different methods of administrating Tylenol reduce pain and improve patient satisfaction after total hip replacement (THR) surgery. The methods of administration are orally, via a pill that is to be swallowed, and intravenously. Our aim is to determine whether oral or intravenous administration of Tylenol will reduce opioid consumption and opioid-related side effects after THR.
Read the detailed description
- Opioid use after THA. Opioid use after THA can be 90 mg (+/-79) in morphine equivalents when using epidural bupivacaine / hydromorphone and multimodal analgesia. Less than 1/3 of this was via the epidural (26/90 mg). Patients reported ORSDS composite scores of 0.58
- IV vs oral acetaminophen. The therapeutic blood concentration of acetaminophen for pain relief is 10 mcg/ml.
After an oral, single dose: In 24 fasting adult subjects, the maximal blood concentration (Cmax) of 7.7 to 17.6 mcg/mL occurred within 1 hour following a single 1000-mg dose of oral acetaminophen (liquid or caplet). Acetaminophen crosses the blood-brain barrier. Central diffusion to the brain and spinal fluid occurs within 15 to 45 minutes with maximum cerebrospinal fluid concentrations occurring at 2 to 4 hours. [Product Information: TYLENOL(R) oral, acetaminophen oral. McNeil Consumer Healthcare, Skillman, NJ, 2010].
In a randomized, double-blind, placebo-controlled, single-dose study, acetaminophen 1,000 mg provided significantly greater efficacy in treating postsurgical dental pain compared with acetaminophen 650 mg and placebo.
Oral, multiple-dose, immediate-release, elderly patients: In 12 very elderly patients (mean age, 89 years), the Cmax was 23.9 mcg/mL following the administration of acetaminophen 1000 mg orally 3 times daily for 5 days.
In adult subjects, the mean Cmax was 28 +/- 21 mcg/mL at the end of a 15-minute IV infusion of acetaminophen 1000 mg. [Product Information: OFIRMEV(TM) intravenous infusion, acetaminophen intravenous infusion. Cadence Pharmaceuticals Inc., San Diego, CA, 2010].
The oral medication has an excellent absorption and at least 85% bioavailability, but peak concentration occurs later than the IV, and the therapeutic blood concentration for pain relief (10mcg/ml) may not be achieved after one oral dose (7-17mcg/ml).A full stomach delays the absorption. With multiple doses, in elderly patients, or with renal/ liver failure, the blood concentration is higher.
Epidural bupivacaine / clonidine (Liu). Pain scores (NRS) after THA with activity on POD1 can be 3.4 mean (2.6 SD) when using epidural bupivacaine / clonidine and multimodal analgesia.
Low-opioid protocol (oxycodone may be too strong for some; cannot use Vicodin due to acetaminophen) Choice of instruments (CAM, ORSDS, Pain OUT). The ORSDS is a 4-point scale that evaluates 12 symptoms (nausea, vomiting, constipation, difficulty passing urine, difficulty concentrating, drowsiness or difficulty staying awake, feeling lightheaded or dizzy, feeling confused, feelings of general fatigue or weakness, itchiness, dry mouth and headache) via 3 symptom distress dimensions (frequency, severity, bothersomeness). It is validated for use after orthopaedic surgery, specifically including TKA patients receiving epidural analgesia and femoral nerve blockade.
Patients can meet criteria for delirium by CAM by having acute onset of inattention as well as either disorganized thinking or altered level of consciousness.Patients without acute onset can also meet criteria for delirium if inattention, disorganized thinking and altered level of consciousness are all present, with at least one factor judged to be fluctuating. CAM has been widely applied and has been specifically used to evaluate elderly TKA patients receiving epidural analgesia and femoral nerve blockade.
The Patient Outcome Questionnaire by the American Pain society is used for quality improvement, and measures 6 aspects of quality, including (1) pain severity and relief; (2) impact of pain on activity, sleep, and negative emotions; (3) side effects of treatment; (4) helpfulness of information about pain treatment; (5) ability to participate in pain treatment decisions; and (6) use of nonpharmacological strategies.
- Conditions
- Pain, Postoperative, Opioid Use
- Being tested
- Acetaminophen
- Medical subject headings
- Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AcetaminophenDrug
Oral acetaminophen, intravenous placebo
AcetaminophenDrug
Intravenous acetaminophen, oral placebo
| Study group | Role | What they receive |
|---|---|---|
| Oral Tylenol | Experimental | Patient group receiving 1000mg of oral acetaminophen and an intravenous placebo Receives: Drug: Acetaminophen |
| Intravenous Tylenol | Experimental | Patient group receiving 1000mg of intravenous acetaminophen and an oral placebo Receives: Drug: Acetaminophen |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pain With Physical Therapy on Post-operative Day 1
Numerical rating scale of pain on a scale of 0-10, with 0 representing the minimum value of no pain and 10, representing the maximum, defined as being pain as bad as imaginable.
Measured: 24 hours after the operation (post-operative day 1)
Opioid Use
Oral morphine equivalents, cumulative, POD 0-3. Recorded in Medication Usage Database.
Measured: Day of surgery to post-operative day 3
Opioid Side Effects
The Opioid-Related Symptom Distress Scale (ORSDS) is a Likert scale that evaluates 3 symptom distress dimensions (frequency, severity, bothersomeness) for 12 symptoms. Frequency is rated on a 4-point scale (1= 'Rarely', 4= 'Almost constantly'). Severity is rated on a 4-point scale (1= 'Slightly', 4= 'Very'). Bothersomeness is rated on a 5-point scale (0.8= 'Not at all', 4.0= 'Very much'). The symptom-specific ORSDS is the average of the 3 symptom distress dimensions. The composite ORSDS score is the average of 12 symptom-specific scores.
Measured: 24 hours after surgery (Post-operative day 1)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Jan 2017 (estimated)
- Study start16 Feb 2017
- Primary completion16 Jun 2019
- Study completion16 Jun 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Pain, PostoperativeStudies of the same condition, open and under way.
- More trials run by Hospital for Special Surgery, New YorkThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 154 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hospital for Special Surgery, New York
- Sponsor type
- University, hospital or other
- Collaborators
- Mallinckrodt
- Responsible party
- Sponsor
- Investigators
- Jacques Ya Deau, MD, PhD, Principal investigator, Hospital for Special Surgery, New York
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03020966
- Sponsor's protocol ID
- 2016-209
- Acronym
- IV Tylenol
- Status last verified
- Aug 2021
- First submitted
- 6 Dec 2016
- Last updated
- 10 Aug 2021
- Results posted
- Yes, on ClinicalTrials.gov
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Publications
Jules-Elysee KM, Goon AK, Westrich GH, Padgett DE, Mayman DJ, Ranawat AS, Ranawat CS, Lin Y, Kahn RL, Bhagat DD, Goytizolo EA, Ma Y, Reid SC, Curren J, YaDeau JT. Patient-controlled epidural analgesia or multimodal pain regimen with periarticular injection after total hip arthroplasty: a randomized, double-blind, placebo-controlled study. J Bone Joint Surg Am. 2015 May 20;97(10):789-98. doi: 10.2106/JBJS.N.00698.
PubMed 25995489Gelotte CK, Auiler JF, Lynch JM, Temple AR, Slattery JT. Disposition of acetaminophen at 4, 6, and 8 g/day for 3 days in healthy young adults. Clin Pharmacol Ther. 2007 Jun;81(6):840-8. doi: 10.1038/sj.clpt.6100121. Epub 2007 Mar 21.
PubMed 17377528Singla NK, Parulan C, Samson R, Hutchinson J, Bushnell R, Beja EG, Ang R, Royal MA. Plasma and cerebrospinal fluid pharmacokinetic parameters after single-dose administration of intravenous, oral, or rectal acetaminophen. Pain Pract. 2012 Sep;12(7):523-32. doi: 10.1111/j.1533-2500.2012.00556.x. Epub 2012 Apr 24.
PubMed 22524979Qi DS, May LG, Zimmerman B, Peng P, Atillasoy E, Brown JD, Cooper SA. A randomized, double-blind, placebo-controlled study of acetaminophen 1000 mg versus acetaminophen 650 mg for the treatment of postsurgical dental pain. Clin Ther. 2012 Dec;34(12):2247-2258.e3. doi: 10.1016/j.clinthera.2012.11.003. Epub 2012 Nov 28.
PubMed 23200183Liu SS, Bae JJ, Bieltz M, Wukovits B, Ma Y. A prospective survey of patient-controlled epidural analgesia with bupivacaine and clonidine after total hip replacement: a pre- and postchange comparison with bupivacaine and hydromorphone in 1,000 patients. Anesth Analg. 2011 Nov;113(5):1213-7. doi: 10.1213/ANE.0b013e318228fc8b. Epub 2011 Aug 4.
PubMed 21821512Yadeau JT, Liu SS, Rade MC, Marcello D, Liguori GA. Performance characteristics and validation of the Opioid-Related Symptom Distress Scale for evaluation of analgesic side effects after orthopedic surgery. Anesth Analg. 2011 Aug;113(2):369-77. doi: 10.1213/ANE.0b013e31821ae3f7. Epub 2011 Apr 27.
PubMed 21525182Inouye SK, van Dyck CH, Alessi CA, Balkin S, Siegal AP, Horwitz RI. Clarifying confusion: the confusion assessment method. A new method for detection of delirium. Ann Intern Med. 1990 Dec 15;113(12):941-8. doi: 10.7326/0003-4819-113-12-941.
PubMed 2240918Rade MC, Yadeau JT, Ford C, Reid MC. Postoperative delirium in elderly patients after elective hip or knee arthroplasty performed under regional anesthesia. HSS J. 2011 Jul;7(2):151-6. doi: 10.1007/s11420-011-9195-2. Epub 2011 Feb 11.
PubMed 22754416Gordon DB, Polomano RC, Pellino TA, Turk DC, McCracken LM, Sherwood G, Paice JA, Wallace MS, Strassels SA, Farrar JT. Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R) for quality improvement of pain management in hospitalized adults: preliminary psychometric evaluation. J Pain. 2010 Nov;11(11):1172-86. doi: 10.1016/j.jpain.2010.02.012. Epub 2010 Apr 18.
PubMed 20400379
Study at a glance
From the registry record, last updated by the sponsor on 10 Aug 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- IV vs. Oral Acetaminophen as a Component of Multimodal Analgesia After Total Hip Arthroplasty: a Randomized, Blinded Trial
- ClinicalTrials.gov ID
- NCT03020966
- Acronym / sponsor ID
- IV Tylenol / 2016-209
- Conditions
- Pain, Postoperative, Opioid Use
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 154 participants (actual)
- Lead sponsor
- Hospital for Special Surgery, New YorkUniversity, hospital or other
- Collaborators
- Mallinckrodt
- Study start
- 16 Feb 2017 (actual)
- Primary completion
- 16 Jun 2019 (actual)
- Study completion
- 16 Jun 2019 (actual)
- First posted
- 13 Jan 2017 (estimated)
- Results
- Posted 10 Aug 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to determine how well two different methods of administrating Tylenol reduce pain and improve patient satisfaction after total hip replacement (THR) surgery. The methods of administration are orally, via a pill that is to be swallowed, and intravenously. Our aim is to determine whether oral or intravenous administration of Tylenol will reduce opioid consumption and opioid-related side effects after THR.
Detailed description
- Opioid use after THA. Opioid use after THA can be 90 mg (+/-79) in morphine equivalents when using epidural bupivacaine / hydromorphone and multimodal analgesia. Less than 1/3 of this was via the epidural (26/90 mg). Patients reported ORSDS composite scores of 0.58
- IV vs oral acetaminophen. The therapeutic blood concentration of acetaminophen for pain relief is 10 mcg/ml.
After an oral, single dose: In 24 fasting adult subjects, the maximal blood concentration (Cmax) of 7.7 to 17.6 mcg/mL occurred within 1 hour following a single 1000-mg dose of oral acetaminophen (liquid or caplet). Acetaminophen crosses the blood-brain barrier. Central diffusion to the brain and spinal fluid occurs within 15 to 45 minutes with maximum cerebrospinal fluid concentrations occurring at 2 to 4 hours. [Product Information: TYLENOL(R) oral, acetaminophen oral. McNeil Consumer Healthcare, Skillman, NJ, 2010].
In a randomized, double-blind, placebo-controlled, single-dose study, acetaminophen 1,000 mg provided significantly greater efficacy in treating postsurgical dental pain compared with acetaminophen 650 mg and placebo.
Oral, multiple-dose, immediate-release, elderly patients: In 12 very elderly patients (mean age, 89 years), the Cmax was 23.9 mcg/mL following the administration of acetaminophen 1000 mg orally 3 times daily for 5 days.
In adult subjects, the mean Cmax was 28 +/- 21 mcg/mL at the end of a 15-minute IV infusion of acetaminophen 1000 mg. [Product Information: OFIRMEV(TM) intravenous infusion, acetaminophen intravenous infusion. Cadence Pharmaceuticals Inc., San Diego, CA, 2010].
The oral medication has an excellent absorption and at least 85% bioavailability, but peak concentration occurs later than the IV, and the therapeutic blood concentration for pain relief (10mcg/ml) may not be achieved after one oral dose (7-17mcg/ml).A full stomach delays the absorption. With multiple doses, in elderly patients, or with renal/ liver failure, the blood concentration is higher.
Epidural bupivacaine / clonidine (Liu). Pain scores (NRS) after THA with activity on POD1 can be 3.4 mean (2.6 SD) when using epidural bupivacaine / clonidine and multimodal analgesia.
Low-opioid protocol (oxycodone may be too strong for some; cannot use Vicodin due to acetaminophen) Choice of instruments (CAM, ORSDS, Pain OUT). The ORSDS is a 4-point scale that evaluates 12 symptoms (nausea, vomiting, constipation, difficulty passing urine, difficulty concentrating, drowsiness or difficulty staying awake, feeling lightheaded or dizzy, feeling confused, feelings of general fatigue or weakness, itchiness, dry mouth and headache) via 3 symptom distress dimensions (frequency, severity, bothersomeness). It is validated for use after orthopaedic surgery, specifically including TKA patients receiving epidural analgesia and femoral nerve blockade.
Patients can meet criteria for delirium by CAM by having acute onset of inattention as well as either disorganized thinking or altered level of consciousness.Patients without acute onset can also meet criteria for delirium if inattention, disorganized thinking and altered level of consciousness are all present, with at least one factor judged to be fluctuating. CAM has been widely applied and has been specifically used to evaluate elderly TKA patients receiving epidural analgesia and femoral nerve blockade.
The Patient Outcome Questionnaire by the American Pain society is used for quality improvement, and measures 6 aspects of quality, including (1) pain severity and relief; (2) impact of pain on activity, sleep, and negative emotions; (3) side effects of treatment; (4) helpfulness of information about pain treatment; (5) ability to participate in pain treatment decisions; and (6) use of nonpharmacological strategies.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Oral Tylenol | Experimental | Drug: AcetaminophenPatient group receiving 1000mg of oral acetaminophen and an intravenous placebo |
| Intravenous Tylenol | Experimental | Drug: AcetaminophenPatient group receiving 1000mg of intravenous acetaminophen and an oral placebo |
Who may qualify
- Ages
- 18 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Adult
- Scheduled for an elective primary THA with a participating surgeon,
- Planned for Combined Spinal Epidural anesthesia (CSE) and Patient Controlled Epidural Analgesia (PCEA)
- English-speaking
- Patients that did not receive pre-operative opioids
Key exclusion criteria (8 listed)
- Hepatic or renal insufficiency, as defined by abnormal readings on liver and kidney functioning tests.
- Hypersensitivity or contraindication to protocol medication
- Contraindication for CSE and PCEA
- Incapable to provide consent/answer questions in English
- Revision or urgent surgery
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| AcetaminophenOral acetaminophen, intravenous placebo | Drug | Oral Tylenol |
| AcetaminophenIntravenous acetaminophen, oral placebo | Drug | Intravenous Tylenol |
Primary outcome
Pain With Physical Therapy on Post-operative Day 1
Time frame: 24 hours after the operation (post-operative day 1)
Numerical rating scale of pain on a scale of 0-10, with 0 representing the minimum value of no pain and 10, representing the maximum, defined as being pain as bad as imaginable.
Opioid Use
Time frame: Day of surgery to post-operative day 3
Oral morphine equivalents, cumulative, POD 0-3. Recorded in Medication Usage Database.
Opioid Side Effects
Time frame: 24 hours after surgery (Post-operative day 1)
The Opioid-Related Symptom Distress Scale (ORSDS) is a Likert scale that evaluates 3 symptom distress dimensions (frequency, severity, bothersomeness) for 12 symptoms. Frequency is rated on a 4-point scale (1= 'Rarely', 4= 'Almost constantly'). Severity is rated on a 4-point scale (1= 'Slightly', 4= 'Very'). Bothersomeness is rated on a 5-point scale (0.8= 'Not at all', 4.0= 'Very much'). The symptom-specific ORSDS is the average of the 3 symptom distress dimensions. The composite ORSDS score is the average of 12 symptom-specific scores.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Aug 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 25995489Jules-Elysee KM, Goon AK, Westrich GH, Padgett DE, Mayman DJ, Ranawat AS, Ranawat CS, Lin Y, Kahn RL, Bhagat DD, Goytizolo EA, Ma Y, Reid SC, Curren J, YaDeau JT. Patient-controlled epidural analgesia or multimodal pain regimen with periarticular injection after total hip arthroplasty: a randomized, double-blind, placebo-controlled study. J Bone Joint Surg Am. 2015 May 20;97(10):789-98. doi: 10.2106/JBJS.N.00698.
- Background: PubMed 17377528Gelotte CK, Auiler JF, Lynch JM, Temple AR, Slattery JT. Disposition of acetaminophen at 4, 6, and 8 g/day for 3 days in healthy young adults. Clin Pharmacol Ther. 2007 Jun;81(6):840-8. doi: 10.1038/sj.clpt.6100121. Epub 2007 Mar 21.
- Background: PubMed 22524979Singla NK, Parulan C, Samson R, Hutchinson J, Bushnell R, Beja EG, Ang R, Royal MA. Plasma and cerebrospinal fluid pharmacokinetic parameters after single-dose administration of intravenous, oral, or rectal acetaminophen. Pain Pract. 2012 Sep;12(7):523-32. doi: 10.1111/j.1533-2500.2012.00556.x. Epub 2012 Apr 24.
- Background: PubMed 23200183Qi DS, May LG, Zimmerman B, Peng P, Atillasoy E, Brown JD, Cooper SA. A randomized, double-blind, placebo-controlled study of acetaminophen 1000 mg versus acetaminophen 650 mg for the treatment of postsurgical dental pain. Clin Ther. 2012 Dec;34(12):2247-2258.e3. doi: 10.1016/j.clinthera.2012.11.003. Epub 2012 Nov 28.
- Background: PubMed 21821512Liu SS, Bae JJ, Bieltz M, Wukovits B, Ma Y. A prospective survey of patient-controlled epidural analgesia with bupivacaine and clonidine after total hip replacement: a pre- and postchange comparison with bupivacaine and hydromorphone in 1,000 patients. Anesth Analg. 2011 Nov;113(5):1213-7. doi: 10.1213/ANE.0b013e318228fc8b. Epub 2011 Aug 4.
- Background: PubMed 21525182Yadeau JT, Liu SS, Rade MC, Marcello D, Liguori GA. Performance characteristics and validation of the Opioid-Related Symptom Distress Scale for evaluation of analgesic side effects after orthopedic surgery. Anesth Analg. 2011 Aug;113(2):369-77. doi: 10.1213/ANE.0b013e31821ae3f7. Epub 2011 Apr 27.
- Background: PubMed 2240918Inouye SK, van Dyck CH, Alessi CA, Balkin S, Siegal AP, Horwitz RI. Clarifying confusion: the confusion assessment method. A new method for detection of delirium. Ann Intern Med. 1990 Dec 15;113(12):941-8. doi: 10.7326/0003-4819-113-12-941.
- Background: PubMed 22754416Rade MC, Yadeau JT, Ford C, Reid MC. Postoperative delirium in elderly patients after elective hip or knee arthroplasty performed under regional anesthesia. HSS J. 2011 Jul;7(2):151-6. doi: 10.1007/s11420-011-9195-2. Epub 2011 Feb 11.
- Background: PubMed 20400379Gordon DB, Polomano RC, Pellino TA, Turk DC, McCracken LM, Sherwood G, Paice JA, Wallace MS, Strassels SA, Farrar JT. Revised American Pain Society Patient Outcome Questionnaire (APS-POQ-R) for quality improvement of pain management in hospitalized adults: preliminary psychometric evaluation. J Pain. 2010 Nov;11(11):1172-86. doi: 10.1016/j.jpain.2010.02.012. Epub 2010 Apr 18.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jacques Ya Deau, MD, PhD principal investigator
Hospital for Special Surgery, New York
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Acetaminophen in people with Pain, Postoperative and Opioid Use, run by Hospital for Special Surgery, New York at 1 site 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 5 inclusion and 8 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: finished, as of the sponsor's last update on 10 Aug 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site 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 10 Aug 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?
Pain With Physical Therapy on Post-operative Day 1 (time frame: 24 hours after the operation (post-operative day 1)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03020966, which also lists 9 linked publications.
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 10 Aug 2021.