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Morphine or Ketamine for Analgesia

Efficacy of Intravenous Sub-Dissociative Ketamine Versus Intravenous Morphine in Children With Acute Pain

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06835504
Acronym
MoKA
Enrollment
1010
Registered
2025-02-19
Start date
2026-10-17
Completion date
2030-04-23
Last updated
2026-10-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Abdominal Pain, Isolated Extremity Fracture, Pain, Pediatrics

Keywords

Ketamine, Morphine, Pediatric, Children, Sub-dissociative, Opioid-sparing, Emergency medicine, Emergency care, Emergency department, Post-traumatic stress, Anxiety, Depression, Abdominal pain, Fracture, Analgesia

Brief summary

Pain is common in children presenting to the emergency department but is frequently undertreated, leading to both short- and long-term consequences. Morphine is the standard treatment for children with moderate to severe acute pain, but its use is associated with serious side effects and caregiver and clinician concerns related to opioid administration. The investigators aim to determine if sub-dissociative ketamine is non-inferior to morphine for treating acute pain and a preferable alternative for treating acute pain in children because of its more favorable side effect profile and potential long-term benefits related to pain-related function, analgesic use/misuse, and mental and behavioral health outcomes.

Detailed description

Aim 1: To determine if IV sub-dissociative ketamine is non-inferior to IV morphine for decreasing pain intensity in children presenting to an ED with acute pain. The investigators hypothesize that IV sub-dissociative ketamine is non-inferior to IV morphine for decreasing pain intensity in children with acute abdominal pain or an extremity fracture. Aim 2: To compare the rate of acute (\<2 hours) adverse events, including cardiopulmonary adverse events requiring an intervention, associated with IV sub-dissociative ketamine and IV morphine. The investigators hypothesize that there is a smaller proportion of cardiopulmonary adverse events requiring an intervention associated with IV sub-dissociative ketamine compared to IV morphine. Aim 3: To determine the relationship between ketamine and long-term sequelae of acute pain. The investigators hypothesize that children who receive ketamine will have better levels of pain-related function during the first week following ED presentation and will have greater odds of experiencing more favorable post-traumatic stress, anxiety and depression outcomes 1-6 months after ED presentation compared to children who received IV morphine.

Interventions

DRUGKetamine hydrochloride

Sub-dissociative ketamine, IV

Morphine, IV

Sponsors

Columbia University
Lead SponsorOTHER
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
CollaboratorNIH
National Institute of Neurological Disorders and Stroke (NINDS)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

Non-inferiority trial design

Eligibility

Sex/Gender
ALL
Age
6 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

1. Age 6 to \< 18 years old 2. Chief complaint includes abdominal pain OR isolated long-bone extremity fracture (suspected or proven) 3. Self-reported pain score of ≥ 6/10 4. Requires IV morphine for analgesia as determined by the treating physician

Exclusion criteria

1. Weighs more than 81.9 kg 2. Known allergy/contraindication to morphine or ketamine 3. Antecedent receipt of ketamine related to presenting complaint 4. Inability to use self-report measures of pain or questionnaires 5. Chronic disease associated with pain 6. Chronic pain conditions requiring use of opioids as an outpatient 7. Abnormal vital signs at baseline, defined as oxygen saturation \<92% and/or low respiratory rate and/or low heart rate and/or low blood pressure per age 8. Altered mental state (e.g., GCS \< 14 or clinical intoxication) 9. Known history of schizophrenia, liver or kidney problems, or osteogenesis imperfecta 10. Concern for open fracture, neurovascular compromise, or compartment syndrome 11. Injuries in addition to the extremity injury (e.g., head, neck, abdomen) 12. Known or reported pregnancy 13. Patients who are breastfeeding 14. Patient or parent/guardian does not speak English or Spanish 15. Patient previously enrolled in this study 16. Known significant or uncontrolled cardiovascular disease 17. Known increased intracranial pressure and/or elevated intraocular pressure 18. Currently taking or having used a monoamine oxidase inhibitor within 14 days 19. Wards of state, foster children, or children in custody

Design outcomes

Primary

MeasureTime frameDescription
Pain intensityUp to 240 minutes after completion of study drug administration or until a terminal event occursSelf-reported pain intensity measured using the Verbal Numerical Rating Scale (VNRS). Scored from 0 to 10. A higher score indicates a worse outcome.
Cardiopulmonary adverse events requiring an interventionUp to 120 minutes after completion of study drug administration or until a terminal event occursCardiopulmonary adverse events (e.g., hypoxia, respiratory depression, hypotension) requiring an intervention (e.g., isotonic fluid bolus; vasopressor; chest compression; naloxone; supplemental oxygen; non-invasive positive pressure ventilation; bag-valve-mask ventilation; tracheal intubation)
Pain-related functionDays 1, 2,3, and 7 after discharge.Pain intensity and related functional limitations due to pain, measured using the Parents' Postoperative Pain Measure (PPPM). Scored from 0 to 10. A higher score indicates a worse outcome.
Post-traumatic stressBaseline (at time of enrollment) and days 7, 30, 90 and 180 after discharge.Stress related to the pain experienced measured using the University of California Los Angeles Post-Traumatic Stress Disorder (UCLA PTSD). Scored from 0 to 80. A higher score indicates a worse outcome.

Secondary

MeasureTime frameDescription
Desire of rescue analgesiaUp to 120 minutes after completion of study drug administration or until a terminal event occursNumber of participants who indicated that they desired a rescue analgesic
Desire for same analgesicAt 240 minutes after completion of study drug administration or when a terminal event occursNumber of participants who would want the same analgesic (i.e., study medication) again in the future.
Depth of sedationUp to 240 minutes after completion of study drug administration or until a terminal event occursDepth of sedation measured using the University of Michigan Sedation Scale (UMSS). Scored from 0 to 4. 0 is deepest level of sedation (unarousable), 4 is awake and alert.
Adverse events, non-cardiopulmonaryUp to 120 minutes after completion of study drug administration or until a terminal event occursAdverse events that are non-cardiopulmonary and can include (but are not limited to) opioid-related adverse events or those as measured using the Side Effects Rating Scale of Dissociative Anesthetics (SERSDA).
Analgesic/opioid use after dischargeDays 1, 2, 3, 7, 30, 90, and 180 after dischargeName, dose and duration of analgesics and/or opioids used to calculate total days of use during the elapsed time since last assessment
Missed school or workDay 7 after dischargeDays of missed school or work related to the chief complaint.
Return visitDay 7, 30, 90, 180 after dischargeNumber of return visits related to the chief complaint, which can include (but not limited to) return visits to the emergency department or primary care physician
AnxietyBaseline (at time of enrollment) and days 7, 30, 90, and 180 after dischargePROMIS Anxiety 8a. Scored from 8 to 40. A higher score indicates a worse outcome.
DepressionBaseline (at time of enrollment) and days 7, 30, 90, and 180 after dischargePatient-Reported Outcomes Measurement Information System (PROMIS). Scored from 8 to 40. A higher score indicates a worse outcome.
Substance useBaseline (at time of enrollment) and day 30 after dischargeNational Institute on Drug Abuse (NIDA) modified assist tool. Scored from 0 to 360. A higher score indicates a worse outcome.

Countries

United States

Contacts

CONTACTDaniel S Tsze, MD, MPH
dst2141@cumc.columbia.edu917-375-2647
CONTACTAmy L Drendel, DO, MS
adrendel@mcw.edu
PRINCIPAL_INVESTIGATORDaniel S Tsze, MD, MPH

Columbia University

PRINCIPAL_INVESTIGATORAmy L Drendel, DO, MS

Medical College of Wisconsin

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Oct 21, 2026