The Impact of Oral Ethanol and Vaped Ethanol on the Evaluation of Impairment
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Contact
Study Contact
- Name: Alison Breland, PhD
- Phone Number: 8048273562
- Email: ctsp@vcu.edu
Study Contact Backup
- Name: Nicoleta Gaitan, RN
- Phone Number: 8048273562
- Email: gaitann@vcu.edu
Study Locations
-
-
Virginia
-
Richmond, Virginia, United States, 23298
- Virginia Commonwealth University
-
-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- e-cigarette users
- alcohol consumers
- willing to provide informed consent
- able to attend the lab sessions as needed
- agree to use designated products according to study protocol.
Exclusion Criteria:
- Women who are breast-feeding or test positive for pregnancy (by urinalysis) at screening.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Other: Within group four condition comparison
Participants completed four ~5-hour, Latin-square ordered sessions separated by ≥48 hours.
Session order was not recorded as it was not relevant to the study outcomes: Beverage with ethanol and E-cigarette liquid with ethanol, Beverage with ethanol and E-cigarette liquid without ethanol, Beverage without ethanol and E-cigarette liquid with ethanol, and Beverage without ethanol and E-cigarette liquid without ethanol.
|
Beverage with ethanol and E-cigarette liquid with ethanol
Beverage with ethanol and E-cigarette liquid without ethanol
Beverage without ethanol and E-cigarette liquid with ethanol
Beverage without ethanol and E-cigarette liquid without ethanol
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Blood Alcohol Concentration
Time Frame: Blood collected before (baseline) and after (0, 40, 55, 200, 215) drinking. The e-cigarette was used at 50 and 210 minutes post-drinking.
|
Blood alcohol concentration (BAC) level was determined 6 times over 6 hours to assess for changes in BAC from use of an e-cigarette containing ethanol compared to the use of an e-cigarette without ethanol.
|
Blood collected before (baseline) and after (0, 40, 55, 200, 215) drinking. The e-cigarette was used at 50 and 210 minutes post-drinking.
|
|
Breath Alcohol Concentration
Time Frame: Breath was analyzed before (baseline) and after (10, 20, 40, 55, 90, 120, 165, 200, 215, 240, 270 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Breath Alcohol Concentration (BrAC) was assessed 12 times over 6 hours to determine changes in BrAC from the use of an e-cigarette containing ethanol compared to the use of an e-cigarette without ethanol.
|
Breath was analyzed before (baseline) and after (10, 20, 40, 55, 90, 120, 165, 200, 215, 240, 270 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Oral Fluid Alcohol Concentration (OFAC)
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Oral fluid alcohol concentration (OFAC) was assessed 9 times over 6 hours to determine changes in OFAC from the use of an e-cigarette containing ethanol compared to use of an e-cigarette without ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
Time Frame: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
5-Hydroxytryptophol was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
Time Frame: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
5-Hydroxyindoleacetic acid was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
Time Frame: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Ethyl sulfate was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
Time Frame: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Phosphatidylethanol 16:0-18:1 was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
Time Frame: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Phosphatidylethanol 16:0-18:2 was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
Time Frame: Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
5-Hydroxytryptophol glucuronide was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
Time Frame: Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking
|
Ethyl glucuronide was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking
|
|
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking
|
5-Hydroxyindoleacetic acid was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking
|
|
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
5-Hydroxyindoleacetic acid was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking
|
Ethyl sulfate was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking
|
|
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Phosphatidylethanol 16:0-18:1 was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
Phosphatidylethanol 16:0-18:2 was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
Time Frame: Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking.
|
Ethyl glucuronide was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking.
|
|
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
Time Frame: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking
|
Ethyl glucuronide was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.
|
Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Horizontal Gaze Nystagmus
Time Frame: Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).
|
Standard Field Sobriety Tests (SFSTs) were administered 4 times over a course of 6 hours to assess changes in objective impairment. The SFST includes the Horizontal Gaze Nystagmus (a jerking or stuttering type of movement observed in a person's eyes that occurs as a result of consuming alcohol or other nervous system depressants) test. For each test, a law enforcement officer records the number of clues observed. HGN has a maximum of 6 clues, 3 per eye:
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Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).
|
|
Walk and Turn Test
Time Frame: Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).
|
Standard Field Sobriety Tests (SFSTs) were administered 4 times over a course of 6 hours to assess changes in objective impairment. The SFST includes the walk and turn test (suspect to perform a physical task while simultaneously following instructions and maintaining balance; involves walking a straight line heel-to-toe, turning, and walking back, with officers looking for specific indicators of impairment). For each test, a law enforcement officer records the number of clues observed. WAT has a maximum of 8 clues:
|
Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).
|
|
One Leg Stand Test
Time Frame: Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).
|
Standard Field Sobriety Tests (SFSTs) were administered 4 times over a course of 6 hours to assess changes in objective impairment.
The SFST includes the one-leg stand test (assess balance and coordination, potentially indicating impairment due to alcohol or drugs).
For each test, a law enforcement officer records the number of clues observed.
OLS has a maximum of 4 clues: Swaying while balancing, Using arms for balance, Hopping 4. Putting the raised foot down
|
Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).
|
Other Outcome Measures
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Subjective High Assessment Scale Questionnaire (SHAS)
Time Frame: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
Subjective High Assessment Scale Questionnaire (SHAS) is a 14-item questionnaire used to assess how intoxicated a person feels after consuming alcohol, typically administered in laboratory settings.
It focuses on capturing subjective sensations associated with intoxication, such as feeling "clumsy," "dizzy," or "high".
Participants rate their experience on a visual analog scale (a line with markings) to indicate the extent to which they feel each symptom at a given time.
The scale ranges from Normal" (0) to "Extremely" (100).
The score for each of the questions is summed to give an overall indication of the individual's subjective intoxication.
A higher score would indicate greater feelings of impairment.
|
Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
|
Biphasic Alcohol Effects Scale Questionnaire (BAES)
Time Frame: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
Biphasic Alcohol Effects Scale Questionnaire (BAES) is a 14-item questionnaire consisting of adjectives that describe the stimulant- and sedative-like effects of alcohol.
The items are presented in alphabetical order, and are rated on an 11-point rating scale from 0=Not at All to 10=Extremely.
The score for each of the questions was summed to give an overall indication of the individual's subjective intoxication.
A higher score would indicate greater feelings of impairment.
|
Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
|
General Labeled Magnitude Scale Questionnaire (gLMS)
Time Frame: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
The general labeled magnitude scale (gLMS) is a psychophysical scaling method used to measure the perceived intensity of various sensations.
A gLMS typically ranges from 0 (undetectable) to 100 (strongest imaginable sensation/experience of any kind).
Crucially, it uses specific labels positioned at specific points on the scale (e.g., barely detectable, weak, moderate, strong, very strong).
The gLMS was comprised of 3 questions asking participants to indicate the overall flavor sensation, harshness, and throat hit of the e-cigarette.
The score for each of the questions was summed.
A higher score would indicate greater sensations from e-cigarette use.
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Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
|
Labeled Hedonic Scale Questionnaire (LHS)
Time Frame: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
A survey tool used to measure how much someone likes or dislikes something using descriptive labels for different levels of liking and disliking.
Instead of just numbers, the scale uses words or phrases that describe the intensity of liking or disliking (e.g., "most disliked sensation imaginable"=0, "neutral" = 50, and "most liked sensation imaginable"=100) and aim to provide ratio-level data, meaning that the differences between scale points are meaningful and proportional.
the LHS was comprised of 4 questions asking participants to indicate the e-cigarette's overall flavor sensation, harshness, throat hit, and warmth of the vapor.
The score for each of the questions was summed.
A higher score would indicate a more liked overall vaping experience; a lower score would indicate a more disliked overall vaping experience
|
Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
|
Direct Effects of Vaping Questionnaire (DEPVQ)
Time Frame: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
Direct Effects of Vaping Questionnaire (DEVQ) is a 10-item Questionnaire that asks participants about their vaping experience (10 questions, each scored from 0 - 100).
While subscale scores are often the primary focus, an overall score may be calculated by summing all item scores or averaging them.
The score for each of the questions was summed.
A higher score indicates the e-cigarette evoked greater subjective effects or feelings.
|
Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).
|
Collaborators and Investigators
Sponsor
Sponsor
Collaborators
Collaborators
Investigators
Investigators
- Principal Investigator: Alison Breland, PhD, Virginia Commonwealth University
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Actual)
First Posted
Study Record Updates
Last Update Posted (Estimated)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- HM20018402
- 2019-MU-MU-0007 (Other Grant/Funding Number: Department of Justice)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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