High Dose IV Lidocaine vs Hydromorphone for Abdominal Pain in the Emergency Department (HIDO-LIDO)

December 26, 2023 updated by: Hennepin Healthcare Research Institute

High Dose Intravenous Lidocaine vs Hydromorphone for Acute Abdominal Pain in the Emergency Department: A Randomized, Comparative Efficacy Trial

Intravenous lidocaine will be given at a dose of 2 mg/kg intravenously to patients in the emergency department with a diagnosis of acute abdominal pain. Its efficacy will be compared to 1 mg of intravenous hydromorphone, with a primary endpoint of mean improvement of pain at 90 minutes.

Study Overview

Status

Terminated

Detailed Description

Abdominal pain is a common chief complaint for patients presenting to the emergency department (ED) in the United States. Intravenous opioids are commonly used to treat acute abdominal pain in the ED. These medications are highly efficacious and, when used in a monitored setting such as the ED, extremely safe. Use of opioids has fallen out of favor because of a spike in opioid-related overdose deaths throughout the United States. While use of opioids in the ED is unlikely to contribute to outpatient opioid deaths, minimizing the use of opioids in the ED will contribute to an opioid free culture, in which opioids are used only when absolutely necessary. A variety of different types of medications can be used in lieu of opioids. One such medication, intravenous lidocaine, has been used extensively for neuropathic pain, in the peri- and post-operative surgical setting, the cardiac care unit, and most recently in the emergency department.

Intravenous lidocaine has long been used to treat pain. In publications dating back to 1980, intravenous lidocaine has been shown to be an effective treatment for neuropathic pain. In the postoperative setting, intravenous lidocaine decreased pain and decreased the need for opiates. More recently, emergency medicine investigators in Iran demonstrated that intravenous lidocaine decreased pain associated with renal colic and limb ischemia. An ED-based study in the United States showed comparable efficacy between morphine and intravenous lidocaine when used for acute pain. Most recently, a prospective RCT showed 120 mg of intravenous lidocaine was efficacious for abdominal pain, albeit not as effective as 1 mg of hydromorphone. However, a subgroup analysis showed that when lidocaine was dosed at 2 mg/kg, it was equally as effective as hydromorphone.

Over the years, intravenous lidocaine has been used for a variety of indications including arrhythmia prophylaxis in patients with acute coronary syndromes. Known side effects of intravenous lidocaine range from transient neurological symptoms (dizziness, paresthesias), to cardiac dysrhythmias and seizure. To date, no deaths have been attributed to its use for treating pain, and the only documented significant complication was due to an unintentional overdose when a patient received ten times the normal dose. All reported side effects in pain patients have been transient and resolved by either stopping the drug, decreasing the infusion rate or by observation alone. Additionally, doses of 2 mg/kg have been tolerated well in the outpatient setting, operating room and ED without any serious side effects. Thus, intravenous lidocaine is an emerging medication for safe and rapid relief of pain, has no known addictive properties, and creates a potential for a pain practice paradigm shift in the United States.

We therefore propose a randomized, double blind, comparative efficacy trial to address the following aim:

To determine if a 2 mg/kg dose of intravenous lidocaine is as equally efficacious as a single dose of 1 mg intravenous hydromorphone for acute abdominal pain in the emergency department.

Study Type

Interventional

Enrollment (Actual)

4

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 Locations

    • Minnesota
      • Minneapolis, Minnesota, United States, 55415
        • Hennepin County Medical Center

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

16 years to 62 years (Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Must be a patient in the emergency department (ED)
  • Must have acute abdominal pain, defined as abdominal or flank pain of a duration of 7 days or less
  • Predicted treatment must include the use of an intravenous opiate

Exclusion Criteria:

  • Cardiac conduction system impairment (QTc duration > 0.5s, QRS duration > 0.12s, PR interval <0.12s or > 0.2s)
  • Known renal (CKD >2) or liver disease (Childs-Pugh B or greater)
  • Hemodynamically instability, defined by the attending physician
  • Pregnant or breastfeeding
  • Have a known allergy to either medication
  • Used of prescription or illicit opioids within the previous week
  • Patients with a chronic pain disorder, defined as use of any analgesic medication on more days than not during the four weeks preceding the acute episode of pain

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: Intravenous Lidocaine
Administered at a dose of 2 mg/kg over 5 minutes
2 mg/kg over 5 minutes
Other Names:
  • Xylocaine
Active Comparator: Intravenous Hydromorphone
Administered at a dose of 1 mg over 5 minutes
1 mg over 5 minutes
Other Names:
  • Dilaudid

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Mean Improvement in Pain at 90 Minutes
Time Frame: 90 minutes
The difference between the pain score at time 0 and 90 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
90 minutes

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sufficient Pain Relief
Time Frame: From administration of study drug until patient leaves the emergency department, up until 3 hours from administration of study drug.
Does the patient require off-protocol medication for additional pain relief? Off-protocol defined as any opiate or NSAID
From administration of study drug until patient leaves the emergency department, up until 3 hours from administration of study drug.
Side Effects
Time Frame: 15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes, 180 minutes and at 7 days
Yes or no, did the patient have any side effects, defined as any new symptom after the administration of the study drug.
15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes, 180 minutes and at 7 days
Serious Adverse Event
Time Frame: 180 minutes after administration of study drug
Yes or no, did the patient suffer a serious adverse event? Defined as death, requiring or prolonging inpatient hospitalization, resulting in persistent or significant disability/incapacity, or is considered a significant medical event by the investigator based off of medical judgement.
180 minutes after administration of study drug
Improvement in Numerical Pain Score at 15 Minutes
Time Frame: 15 minutes
The difference between the pain score at time 0 and 15 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
15 minutes
Improvement in Numerical Pain Score at 30 Minutes
Time Frame: 30 minutes
The difference between the pain score at time 0 and 30 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
30 minutes
Improvement in Numerical Pain Score at 60 Minutes
Time Frame: 60 minutes
The difference between the pain score at time 0 and 60 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
60 minutes
Improvement in Numerical Pain Score at 120 Minutes
Time Frame: 120 minutes
The difference between the pain score at time 0 and 120 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
120 minutes
Improvement in Numerical Pain Score at 150 Minutes
Time Frame: 150 minutes
The difference between the pain score at time 0 and 150 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
150 minutes
Improvement in Numerical Pain Score at 180 Minutes
Time Frame: 180 minutes
The difference between the pain score at time 0 and 180 minutes. Pain score ranges from 0 (no pain) to 10 (maximum pain).
180 minutes
Patient Preference for the Medication They Received
Time Frame: Day 7
If the patient were to come to the ED again for the same complaint, would they want the same study drug they received?
Day 7
Medication for Side Effects
Time Frame: 15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes and 180 minutes
Are any medications required to control medication side effects, defined as any new symptom after the administration of the study drug?
15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes and 180 minutes
Administration of Naloxone
Time Frame: 15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes and at 180 minutes
Yes or no, was naloxone required after the patient received the study drug?
15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes and at 180 minutes
Change in Disposition
Time Frame: 15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes and at 180 minutes
Yes or no, did the patients disposition change as a consequence of administration of the study drug? Example would be an adverse outcome resulting in hospitalization or other escalation of care.
15 minutes after administration of study drug then again at 30 minutes, 60 minutes, 90 minutes, 120 minutes, 150 minutes and at 180 minutes
Missed Diagnosis
Time Frame: 7 days after administration of study drug
Yes or no, did the patient have a new diagnosis within the next week?
7 days after administration of study drug

Collaborators and Investigators

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

Investigators

  • Principal Investigator: Elliott Chinn, DO, Hennepin County Medical Center, Minneapolis

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)

February 18, 2021

Primary Completion (Actual)

June 30, 2021

Study Completion (Actual)

June 30, 2021

Study Registration Dates

First Submitted

May 7, 2020

First Submitted That Met QC Criteria

May 18, 2020

First Posted (Actual)

May 21, 2020

Study Record Updates

Last Update Posted (Actual)

January 17, 2024

Last Update Submitted That Met QC Criteria

December 26, 2023

Last Verified

December 1, 2023

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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