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Analgesic

Patient-Controlled Acetaminophen for Postoperative Pain

Phase 1
Recruiting
Led By Jinlei Li, MD, PhD
Research Sponsored by Yale University
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Adult patients older than 18 years old admitted to SRC for total shoulder and reverse total shoulder arthroplasty
Be older than 18 years old
Must not have
Patients that cannot swallow pills or cannot take liquid (for example due to risk of aspiration)
Liver dysfunction limiting amount of safe oral acetaminophen
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 12 months
Awards & highlights
No Placebo-Only Group

Summary

This trial is testing if patients can control when they take their oral acetaminophen medication in the hospital.

Who is the study for?
This trial is for individuals experiencing pain after surgery. Participants must be able to take oral medication and use a patient-controlled pump, but specific inclusion and exclusion criteria are not listed.
What is being tested?
The study explores if patients can manage their postoperative pain by controlling their intake of liquid acetaminophen using a CADD pump versus taking regular acetaminophen tablets.
What are the potential side effects?
Acetaminophen is generally low-risk but may cause side effects like nausea, stomach pain, loss of appetite, itching, rash or headaches when taken in excess.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I am over 18 and scheduled for shoulder replacement surgery.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I cannot swallow pills or take liquid medication.
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My liver condition limits how much acetaminophen I can safely take.
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I can make my own medical decisions without needing a legal representative.
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I have a long-term high bilirubin level due to liver condition or Gilbert's.
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I cannot take medications by mouth.
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I cannot drink from a cup due to a neurological or movement disorder.
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I am currently taking pain medication, including opioids or others like benzodiazepine.
Select...
I have had emergency surgery.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~12 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and 12 months for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Nurse Questionnaire
Participant adherence to the study protocol
Participant enrollment rate
Secondary study objectives
Mean Pain score
Mean daily acetaminophen consumption
Mean time to medication delivery

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

2Treatment groups
Experimental Treatment
Active Control
Group I: CADD pump Administered Acetaminophen (Participant Controlled)Experimental Treatment2 Interventions
Participants will receive a CADD pump primed and programmed to deliver 650 mg liquid acetaminophen into a medication cup every 4 hours as needed (PRN).
Group II: Nurse Administered AcetaminophenActive Control1 Intervention
Participants will receive acetaminophen pills 650 mg every 4 hours as needed (PRN) administered by nurse per standard of care

Find a Location

Who is running the clinical trial?

Yale UniversityLead Sponsor
1,930 Previous Clinical Trials
3,033,450 Total Patients Enrolled
16 Trials studying Pain
5,130 Patients Enrolled for Pain
Jinlei Li, MD, PhDPrincipal InvestigatorYale University
~16 spots leftby Aug 2025