Inpatient Single Dose Interventions for Alcohol Use Disorder
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ClinicalTrials.gov Identifier: NCT04562779 |
Recruitment Status :
Not yet recruiting
First Posted : September 24, 2020
Last Update Posted : December 1, 2020
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Every year, alcohol use disorder (AUD) generates millions of emergency department (ED) visits and hospital admissions, costing the U.S. health sector over $90 billion. These hospital admissions are critical opportunities to start patients on addiction pharmacotherapy, but factors like medication non-adherence and post-discharge relapse contribute to frequent re-admissions. Two single-dose interventions are well suited to facilitate treatment retention and prevent re-admissions due to their prolonged, adherence-independent effects: extended-release (XR) naltrexone injection and intravenous (IV) ketamine infusion. These have not been thoroughly investigated in the hospital setting among high-utilizer, safety-net populations. Therefore, the investigators aim to:
- Test the feasibility of randomizing hospitalized patients (n=45-60, age 18-65) with multiple AUD-related admissions to treatment with either extended-release (XR) naltrexone, intravenous (IV) ketamine, or no single-dose medication, all with enhanced linkage to care. Feasibility outcomes such as recruitment rate, patient acceptability, post-discharge follow-up rate, and adverse events will help to identify key lessons for a future comparative effectiveness study.
- Estimate the 30-day re-admission rate for patients randomized to treatment with XR naltrexone, with IV ketamine, or no single-dose medication, all with enhanced linkage to care. The investigators hypothesize that the re-admission rate will be lower for each of the two single-dose medication groups than for the "linkage-alone" group.
Condition or disease | Intervention/treatment | Phase |
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Alcohol Use Disorder, Severe | Drug: Naltrexone 380 MG Drug: Ketamine Hydrochloride Behavioral: Enhanced linkage | Early Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 60 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Single-dose Interventions to Reduce Re-admissions for Hospitalized Patients With Refractory Alcohol Use Disorder: A Randomized Pilot Feasibility Study. |
Estimated Study Start Date : | January 1, 2021 |
Estimated Primary Completion Date : | May 2021 |
Estimated Study Completion Date : | June 2021 |

Arm | Intervention/treatment |
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Experimental: XR Naltrexone
Participants will receive a single dose of extended-release, injectable naltrexone prior to hospital discharge, in addition to enhanced linkage to follow-up addiction care.
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Drug: Naltrexone 380 MG
XR naltrexone to be given once prior to hospital discharge Behavioral: Enhanced linkage Includes in-hospital intake at outpatient addiction clinic plus contingency management related to follow-up |
Experimental: IV Ketamine
Participants will receive a single dose of intravenous ketamine (0.5mg/kg over 40 minutes) prior to hospital discharge, in addition to enhanced linkage to follow-up addiction care.
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Drug: Ketamine Hydrochloride
IV ketamine infusion to be given once prior to hospital discharge Behavioral: Enhanced linkage Includes in-hospital intake at outpatient addiction clinic plus contingency management related to follow-up |
Active Comparator: Linkage
Participants will receive no single-dose addiction medication prior to hospital discharge, but will receive enhanced linkage to follow-up addiction care.
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Behavioral: Enhanced linkage
Includes in-hospital intake at outpatient addiction clinic plus contingency management related to follow-up |
- Rate (%) of 30-day hospital re-admission [ Time Frame: Within 30 days of index hospital discharge. The enrollment period is 5 months. ]Binary outcome: any all-cause hospitalization ascertained by chart review (our EHR includes records from several local hospitals)
- Feasibility - recruitment rate (# per month) [ Time Frame: The enrollment period is 5 months ]Number of participants recruited per month during the enrollment period
- Feasibility - follow-up rate (%) [ Time Frame: The enrollment period is 5 months ]Percentage of patients who presented to 1 week follow-up appointment
- Average within-subject difference in readiness-to-change (SOCRATES-8A score) [ Time Frame: Follow-up planned to be within one week of discharge ]Within-subject differences in readiness to change between inpatient enrollment and outpatient follow-up.
- Rate (%) of 30-day emergency department visit [ Time Frame: Within 30 days of index hospital discharge. The enrollment period is 5 months. ]Binary outcome: any all-cause ED visit ascertained by chart review
- Rate (%) of urine Ethyl Glucuronide (EtG) at follow-up [ Time Frame: Follow-up planned to be within one week of discharge. The enrollment period is 5 months. ]Obtained by urine EtG at outpatient follow-up
- Rate (%) of self-reported binge drinking since discharge [ Time Frame: Follow-up planned to be within one week of discharge. The enrollment period is 5 months. ]Self reported at outpatient follow-up, ascertained by Timeline Follow-Back Method.

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Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Age 18-65
- 1+ alcohol-related* admission(s) in past 12 mo.
- Has insurance (public or private)
- Seen by inpatient addiction consult service
Exclusion Criteria:
- Known or suspected active COVID-19 infection
- Hepatic: AST/ALT >5x upper-limit of normal, decompensated liver failure
- Renal: Glomerular filtration rate <30ml/min
- Cardiovascular: History of acute coronary syndrome, cerebrovascular event, hypertensive crisis, known cardiomyopathy
- Known elevated intracranial pressure
- Thrombocytopenia (<50/microliter)
- Active moderate/severe withdrawal (based on hospital withdrawal protocol)
- Active delirium (alcohol-related or otherwise)
- Already enrolled in study
- XR naltrexone or IV ketamine in last 30 days
- Known intolerance to naltrexone or ketamine
- Other active severe substance use disorder (tobacco, cannabis excluded)
- Pregnant or breast-feeding, or planning.
- Opioids: chronic, recent (<24h), or anticipated
- Unstable psychiatric illness (active psychosis, active suicidality)
- Moving from region within 30-days of discharge
- Discharge to acute/residential treatment
- Involuntary hold

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 ClinicalTrials.gov identifier (NCT number): NCT04562779
Contact: Dale Terasaki, MD | 303-602-6922 | dale.terasaki@cuanschutz.edu | |
Contact: Anastasia Cornell, MPH | Anastasia.Cornell@rmpds.org |
Responsible Party: | Denver Health and Hospital Authority |
ClinicalTrials.gov Identifier: | NCT04562779 |
Other Study ID Numbers: |
20-2008 |
First Posted: | September 24, 2020 Key Record Dates |
Last Update Posted: | December 1, 2020 |
Last Verified: | November 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Alcoholism Alcohol Drinking Drinking Behavior Alcohol-Related Disorders Substance-Related Disorders Chemically-Induced Disorders Mental Disorders Naltrexone Ketamine Analgesics Sensory System Agents Peripheral Nervous System Agents |
Physiological Effects of Drugs Anesthetics, Dissociative Anesthetics, Intravenous Anesthetics, General Anesthetics Central Nervous System Depressants Excitatory Amino Acid Antagonists Excitatory Amino Acid Agents Neurotransmitter Agents Molecular Mechanisms of Pharmacological Action Alcohol Deterrents Narcotic Antagonists |