Ketamine as a Supplement to Local Anesthesia for Minor Procedures (INK-MP)

March 13, 2024 updated by: Trent Reed, Loyola University

Intranasal Ketamine as a Supplement to Local Anesthesia to Reduce Pain Associated With Minor Procedures in the Emergency Department

This trial is a double-blind randomized controlled clinical trial of adults and children (ages 7 to less than 70 years). Patients who present to the ED and who undergo minor bedside procedures that require local anesthesia will be divided into two groups: The first group will be treated with 0.7 mg/kg intranasal ketamine as well as standard local anesthesia for the procedure (treatment cohort). The second group will be treated with a volume-based dose of intranasal saline solution as well as standard local anesthesia for the procedure (control cohort). The primary aim is to assess whether patients in the treatment cohort report lower pain scores on the Numerical Rating Scale (NRS-100) when compared to patients in the control cohort. For adult patients, a secondary aim is to compare agitation between the two cohorts using the Richmond Agitation Sedation Scale (RASS) and, for pediatric patients, a secondary aim is to compare alertness between the two cohorts using the University of Michigan Sedation Scale (UMSS).

Results obtained from specific procedures will be analyzed on a spectrum of complexity and general length of recovery time. Scientific achievements may include finding a safe and effective way to reduce pain and discomfort during minor procedures in the Emergency Department. Additionally, it would provide opportunities for more research on sub-dissociative doses of ketamine during minor procedures: a topic in which there is still a gap in the published research

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Patient experiences in the emergency department (ED) are commonly painful and uncomfortable, particularly when patients must undergo procedures. Managing acute pain and procedural pain for minor procedures in the ED can be challenging. Ketamine is an N-methyl-D aspartate receptor agonist gaining popularity in clinical settings and has also been shown in several studies to potentially treat depression. Several randomized clinical studies have shown that ketamine is a comparable pain relief medication to opioid analgesics in both acute pain and traumatic settings. Its uses for pain control in the ED have been extensively studied with evidence supporting its safety and efficacy. Ketamine can be administered in different ways including intravenously and intranasally. Intravenously, doses above 1 mg/kg of ketamine can induce dissociation- this dose is commonly used for procedural sedation. At lower doses, specifically sub-dissociative doses, ketamine (SDK) acts to alleviate pain (cancerous, neuropathic, and perioperative). Trials using intravenous SDK suggest efficacy similar to traditional intravenous opioid analgesics.

SDK is currently being utilized by emergency medicine physicians in the ED for pain control in doses up to 0.3 mg/kg intravenously and up to 1 mg/kg intranasally. Additionally, the use of SDK in the ED is also supported by the American College of Emergency Physicians. While the literature has extensively documented and supported the safety and efficacy of SDK, there is a gap in the literature for its use in the management of pain for minor procedures in the ED. Intranasal ketamine may be a valuable supplement to standard medical treatment in procedures that would not normally require intravenous access. Minor procedures requiring local anesthesia performed in the ED can still be painful including but not limited to suturing, incision and drainage of an abscess, and digital blocks. Traditionally, many of these procedures are completed using only local anesthesia. Soft tissue and/or very large abscess are sometimes not alleviated by local anesthesia alone. The use of intranasal ketamine to alleviate pain during these and other painful procedures may provide patients with more comfort and pain relief than local anesthesia alone. Dosing for chronic pain and acute pain differ in that chronic pain typically requires higher doses than acute pain. Side effects are related to ketamine dosage and administration type. Thus, patients treated for chronic pain with higher doses of SDK often experience more side effects than patients with acute pain treated with lower doses of SDK. Additionally, compared to placebo and opioid groups in various studies, ketamine was associated with greater risk of neurological, psychological, and minor cardiologic effects. However, the opioid groups typically had a higher risk for major cardiopulmonary effects. The most common side effect of intranasal SDK are bad taste in the mouth, dizziness, and sleepiness. A dose of 0.7 mg/kg IN ketamine has been determined to be a suitable analgesic dose for patients with pain in the ED. While studies have shown the efficacy and safety of using ketamine for pain control, no studies to date have looked at its possible use to decrease pain during minor procedures in the ED.

The investigators aim to determine if a sub-dissociative dose of 0.7 mg/kg intranasal ketamine is a desirable choice to reduce pain associated with minor procedures requiring local anesthesia in the ED. These procedures include incision and drainage of an abscess, laceration repairs requiring sutures, nerve blocks (specifically digital nerve blocks), and other minor procedures requiring local anesthesia. The investigators hypothesize that adult and pediatric patients presenting to the ED and undergoing painful minor procedures will report lower pain scores when treated with 0.7 mg/kg intranasal ketamine in addition to standard local anesthesia than patients who receive a volume-based dose of saline solution with standard local anesthesia (control). Additionally, the investigators hypothesize that patients in the treatment cohort will report few side-effects as measured by the Richmond Agitation Sedation Scale (RASS)(i.e., for adult patients) or University of Michigan Sedation Scale (UMSS) (i.e., for pediatric patients). The minor procedures listed above typically require the use of local anesthesia but do not typically require intravenous access. Thus, the use of intranasal ketamine instead of intravenous analgesia minimizes the changes that would be made to the current standard of carrying out these procedures.

In order to avoid a potential confounder of variation in baseline pain severity of the different procedures, only patients undergoing minor procedures that have a similar pain profile will be randomized. Additional aims of the study include decreasing perceived agitation using RASS or UMSS. Collecting data on pain and total discomfort using the NRS-100 point pain scale will provide a unidimensional measurement of patients' subjective interpretation of their pain. The investigators hope to demonstrate that using ketamine at 0.7 mg/kg for associated pain during minor procedures is efficacious and minimizes adverse side effects of ketamine.

Study Type

Interventional

Enrollment (Estimated)

108

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • United States
    • Illinois
      • Maywood, Illinois, United States, 60153
        • Recruiting
        • Loyola University Medical Center
        • Contact:
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Undergoing Minor Procedure in the ED
  • Weight not to exceed 115kg

Exclusion Criteria:

  • Altered Mental Status
  • Pregnancy
  • Breastfeeding
  • Acute head or eye injury
  • Intercranial Hypertension
  • Hx of seizures
  • Hx of chronic pain
  • Unstable vital signs
  • Allergy to Ketamine
  • Hepatic or Renal Insufficiency
  • Hx of Psychiatric Illness
  • Hx of alcohol/drug abuse

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Intranasal Ketamine
Participants assigned to this arm will receive intranasal ketamine administered at 0.7mg/kg along with normal lidocaine local sedation
Drug: Ketamine
Ketamine is an N-methyl-D aspartate receptor agonist
Placebo Comparator: Placebo
Participants assigned to this arm will receive volume-based dose of intranasal saline administered along with normal lidocaine local sedation
Other: Saline
Intranasal saline flushes pollen, dust, and other debris from nasal passages. It also removes excess mucus and adds moisture
Other Names:
  • Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Immediate pain
Time Frame: 15 minutes
Pain will be measured using the numeric rating scale which is a scale ranging from 0 to 100, where higher values report greater pain
15 minutes
Acute pain
Time Frame: 30 minutes
Pain will be measured using the numeric rating scale which is a scale ranging from 0 to 100, where higher values report greater pain
30 minutes
Delayed pain
Time Frame: 60 minutes
Pain will be measured using the numeric rating scale which is a scale ranging from 0 to 100, where higher values report greater pain
60 minutes

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Immediate agitation
Time Frame: 15 minutes
For adults, agitation will be measured using the Richmond Agitation Sedation Scale (RASS) which is a 10-point scale (range: -5 to +4), where higher scores reflect greater agitation.
15 minutes
Acute agitation
Time Frame: 30 minutes
For adults, agitation will be measured using the Richmond Agitation Sedation Scale (RASS) which is a 10-point scale (range: -5 to +4), where higher scores reflect greater agitation.
30 minutes
Delayed agitation
Time Frame: 60 minutes
For adults, agitation will be measured using the Richmond Agitation Sedation Scale (RASS) which is a 10-point scale (range: -5 to +4), where higher scores reflect greater agitation.
60 minutes
Immediate alertness
Time Frame: 15 minutes
For pediatric patients, agitation will be measured using the University of Michigan Sedation Scale (UMSS) which assesses the level of alertness on a five-point scale ranging from 0 (awake and alert) to 4 (unarousable).
15 minutes
Acute alertness
Time Frame: 30 minutes
For pediatric patients, agitation will be measured using the University of Michigan Sedation Scale (UMSS) which assesses the level of alertness on a five-point scale ranging from 0 (awake and alert) to 4 (unarousable).
30 minutes
Delayed alertness
Time Frame: 60 minutes
For pediatric patients, agitation will be measured using the University of Michigan Sedation Scale (UMSS) which assesses the level of alertness on a five-point scale ranging from 0 (awake and alert) to 4 (unarousable).
60 minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Loyola University

Investigators

  • Principal Investigator: Trent Reed, DO, Loyola University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 25, 2022

Primary Completion (Estimated)

May 31, 2025

Study Completion (Estimated)

May 31, 2025

Study Registration Dates

First Submitted

February 22, 2024

First Submitted That Met QC Criteria

February 22, 2024

First Posted (Actual)

February 29, 2024

Study Record Updates

Last Update Posted (Actual)

March 15, 2024

Last Update Submitted That Met QC Criteria

March 13, 2024

Last Verified

March 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 212154

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

There is no plan to share individual participant data with other researchers

Drug and device information, study documents

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

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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