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

Sponsor
Hennepin Healthcare Research Institute (Other)
Overall Status
Recruiting
CT.gov ID
NCT04398316
Collaborator
(none)
187
1
2
13.8
13.6

Study Details

Study Description

Brief Summary

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.

Condition or Disease Intervention/Treatment Phase
  • Drug: Lidocaine Iv
  • Drug: HYDROmorphone Injection
Phase 4

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 Design

Study Type:
Interventional
Anticipated Enrollment :
187 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose:
Treatment
Official Title:
High Dose Intravenous Lidocaine vs Hydromorphone for Acute Abdominal Pain in the Emergency Department: A Randomized, Comparative Efficacy Trial
Actual Study Start Date :
Feb 18, 2021
Anticipated Primary Completion Date :
Feb 14, 2022
Anticipated Study Completion Date :
Apr 14, 2022

Arms and Interventions

Arm Intervention/Treatment
Experimental: Intravenous Lidocaine

Administered at a dose of 2 mg/kg over 5 minutes

Drug: Lidocaine Iv
2 mg/kg over 5 minutes
Other Names:
  • Xylocaine
  • Active Comparator: Intravenous Hydromorphone

    Administered at a dose of 1 mg over 5 minutes

    Drug: HYDROmorphone Injection
    1 mg over 5 minutes
    Other Names:
  • Dilaudid
  • Outcome Measures

    Primary Outcome Measures

    1. Mean Improvement in Pain at 90 Minutes [90 minutes]

      The difference between the pain score at time 0 and 90 minutes

    Secondary Outcome Measures

    1. Sufficient Pain Relief [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

    2. Improvement in Numerical Pain Score at 15 minutes [15 minutes]

      The difference between the pain score at time 0 and 15 minutes

    3. Improvement in Numerical Pain Score at 30 minutes [30 minutes]

      The difference between the pain score at time 0 and 30 minutes

    4. Improvement in Numerical Pain Score at 60 minutes [60 minutes]

      The difference between the pain score at time 0 and 60 minutes

    5. Improvement in Numerical Pain Score at 120 minutes [120 minutes]

      The difference between the pain score at time 0 and 120 minutes

    6. Improvement in Numerical Pain Score at 150 minutes [150 minutes]

      The difference between the pain score at time 0 and 150 minutes

    7. Improvement in Numerical Pain Score at 180 minutes [180 minutes]

      The difference between the pain score at time 0 and 180 minutes

    8. Patient Preference for the Medication They Received [Day 7]

      If the patient were to come to the ED again for the same complaint, would they want the same drug they received?

    9. Medication for Side Effects [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.

    10. Side Effects [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.

    11. Administration of naloxone [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?

    12. Change in Disposition [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?

    13. Missed Diagnosis [7 days after administration of study drug]

      Yes or no, did the patient have an unplanned return visit to an emergency department resulting in hospital admission?

    14. Serious Adverse Event [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.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 64 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    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

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Hennepin County Medical Center Minneapolis Minnesota United States 55415

    Sponsors and Collaborators

    • Hennepin Healthcare Research Institute

    Investigators

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

    Study Documents (Full-Text)

    None provided.

    More Information

    Additional Information:

    Publications

    Responsible Party:
    Hennepin Healthcare Research Institute
    ClinicalTrials.gov Identifier:
    NCT04398316
    Other Study ID Numbers:
    • 20202020
    First Posted:
    May 21, 2020
    Last Update Posted:
    Feb 24, 2021
    Last Verified:
    Feb 1, 2021
    Individual Participant Data (IPD) Sharing Statement:
    No
    Plan to Share IPD:
    No
    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 Hennepin Healthcare Research Institute
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Feb 24, 2021