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A Comparison of Proprietary Formulations of Oral Ketamine + Aspirin and Oral Ketamine Alone for Musculoskeletal Pain

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT04860804
Recruitment Status : Completed
First Posted : April 27, 2021
Last Update Posted : January 19, 2022
Information provided by (Responsible Party):
Antonios Likourezos, Maimonides Medical Center

Brief Summary:
Acute Pain is one of the most frequent chief complaints and the main reason for visiting the Emergency Department (ED). The acute pain in the ED is largely prevalent across the country with recent literature demonstrating that 61-91% of patients are admitted to the ED due to a variety of acute painful syndromes. There is a lack of good options for pain control in such settings.

Condition or disease Intervention/treatment Phase
Pain Drug: Aspirin and Ketamine Drug: Oral Ketamine Phase 4

Detailed Description:

STUDY OBJECTIVES: To compare analgesic efficacy and rates of side effects of a proprietary formulation of orally administered aspirin and ketamine (AOK) to a proprietary formulation of Oral Ketamine (OK) (VTS-K formulations) for pain management in adult ED patients presenting to the ED with acute musculoskeletal pain HYPOTHESIS: The investigators hypothesize that the administration of AOK will provide better analgesia at 60 minutes post-administration in comparison to OK in adult patients presenting to the ED with acute musculoskeletal pain. The primary outcome of this trial is the comparative reduction in participant's pain scores at 60 minutes post-medication administration.


Subjects: Patients 18 years of age and older presenting to the ED with acute musculoskeletal painful conditions (traumatic and non-traumatic) with an initial pain score of 5 or more on a standard 11-point (0 to 10) numeric rating scale and requiring oral analgesia as determined by the treating attending physician. Patients' screening and enrollment will be performed by study investigators and research assistants. All patients will be enrolled at various times of the day when study investigators will be available for patient enrollment and an ED pharmacist will be available for medication preparation.

Design: This is a prospective, randomized, open-label trial comparing analgesic efficacy and safety of AOK and OK in patients presenting to the ED of Maimonides Medical Center with acute musculoskeletal pain. Upon meeting the eligibility criteria, patients will be randomized into one of the two study arms: Group I will receive AOK and Group II will receive OK.

Data Collection Procedures: Each patient will be approached by a study investigator for acquisition of written informed consent and Health Insurance Portability and Accountability Act authorization after being evaluated by the treating emergency physician and determined to meet study eligibility criteria. When English will not be the participant's primary language, a language- appropriate consent form will be used and non-investigator, hospital employed, trained interpreters or licensed telephone interpreters will assist in acquisition of informed consent. Baseline pain score will be determined with an 11-point numeric rating scale (0 to 10), described to the patient as "no pain" being 0 and "the worst pain imaginable" being 10. A study investigator will record the patient's body weight and baseline vital signs. All data will be recorded on data collection sheets, including patients' sex, demographics, medical history, and vital signs, and entered into SPSS (version 24.0; IBM Corp) by the research manager. Confirmation of written consent acquisition for all participants, and statistical analyses will be conducted by the statistician, who will work independently of any data collection.

Expected Outcomes: The primary outcome will include a reduction from baseline of pain scores on numeric rating pain scale (NRS) at 60 minutes. The secondary outcomes will include a need for rescue analgesia and rates of adverse up to 120 minutes. With respect to unique adverse effects of SDK, we will use Side Effect Rating Scale for Dissociative Anesthetics (SERSDA) and Richmond Agitation Sedation Scale (RASS). SERSDA Scale includes fatigue, dizziness, nausea, headache, feeling of unreality, changes in hearing, mood change, general discomfort, and hallucinations with severity of each graded by patients on a five-point scale, with "0" representing the absence of any adverse effects and "4" representing a severely bothersome side effect. RASS evaluates the severity of agitation and/or sedation in accordance to the nine-point scale with scores ranging from "-4" (deeply sedated) to "0" (alert and calm) to "+4" (combative).

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 60 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Comparison of Proprietary Formulations of Oral Ketamine + Aspirin and Oral Ketamine Alone in Adult Patients Presenting to the ED With Acute Musculoskeletal Pain: Prospective, Randomized, Open-Label, Clinical Trial.
Actual Study Start Date : April 22, 2021
Actual Primary Completion Date : November 30, 2021
Actual Study Completion Date : December 31, 2021

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Active Comparator: AOK Group
Drug: Proprietary oral formulation of 0.5mg/kg of ketamine + 324mg of aspirin
Drug: Aspirin and Ketamine
Drug: Proprietary oral formulation of 0.5mg/kg of ketamine + 324mg of aspirin

Active Comparator: OK Group
Drug: Proprietary oral formulation of 0.5mg/kg of ketamine
Drug: Oral Ketamine
Proprietary oral formulation of 0.5mg/kg of ketamine

Primary Outcome Measures :
  1. Reduction in Pain score at 60 minutes [ Time Frame: 60 minutes ]
    Reduction of pain scores on numeric rating pain scale (NRS) at 60 minutes mark form the baseline. The NRS is an 11 item Likert Scale ranging from 0 (no pain) to 10 (very severe pain) with 5 indicating moderate pain.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 120 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients age 18 and older
  • acute musculoskeletal pain
  • initial pain score of 5 or more on a standard 11- point (0 to 10) numeric rating scale.
  • awake, alert, and oriented to person, place, and time

Exclusion Criteria:

  • altered mental status,
  • allergy to aspirin and ketamine,
  • pregnant
  • unstable vital signs (systolic blood pressure <90 or>180 mm Hg, pulse rate <50 or >150 beats/ min, and respiration rate <10 or >30 breaths/min)
  • inability to provide consent
  • consumption of Aspirin or NSAID's within 6 hours of arrival to the ED
  • active PUD
  • history of GI Hemorrhage
  • history of renal and hepatic insufficiency
  • past medical history of alcohol or drug abuse
  • schizophrenia

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04860804

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United States, New York
Maimonides Medical Center
Brooklyn, New York, United States, 11219
Sponsors and Collaborators
Antonios Likourezos
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Principal Investigator: Leily Naraghi Bagher Pour, MD Maimonides Medical Center
  Study Documents (Full-Text)

Documents provided by Antonios Likourezos, Maimonides Medical Center:
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Responsible Party: Antonios Likourezos, Research Administration Director, Maimonides Medical Center Identifier: NCT04860804    
Other Study ID Numbers: 2021-02-02-MMC
First Posted: April 27, 2021    Key Record Dates
Last Update Posted: January 19, 2022
Last Verified: January 2022
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: No
Keywords provided by Antonios Likourezos, Maimonides Medical Center:
Emergency Medicine, Pain, Pain Management, Musculoskeletal
Emergency Medicine
Pain Management
Additional relevant MeSH terms:
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Musculoskeletal Pain
Muscular Diseases
Musculoskeletal Diseases
Neurologic Manifestations
Anti-Inflammatory Agents, Non-Steroidal
Analgesics, Non-Narcotic
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Inflammatory Agents
Antirheumatic Agents
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action
Platelet Aggregation Inhibitors
Cyclooxygenase Inhibitors
Enzyme Inhibitors
Anesthetics, Dissociative
Anesthetics, Intravenous
Anesthetics, General
Central Nervous System Depressants
Excitatory Amino Acid Antagonists
Excitatory Amino Acid Agents
Neurotransmitter Agents