Recruitment

Recruitment Status
Recruiting
Estimated Enrollment
Same as current

Summary

Conditions
Nicotine Dependence
Type
Interventional
Phase
Not Applicable
Design
Allocation: RandomizedIntervention Model: Crossover AssignmentIntervention Model Description: Participants will be switched in a within-subject crossover design among the three product types.Masking: Double (Participant, Investigator)Masking Description: Vaping of high and low concentration nicotine salt and free-base nicotine will be double-blinded.Primary Purpose: Other

Participation Requirements

Age
Between 18 years and 125 years
Gender
Both males and females

Description

On each study day, one puff will be taken with the assigned product every 30 seconds (total of 10 puffs). Blood samples will be collected to measure nicotine 15 minutes before vaping and 2, 5, 15, 30, 60, 120, and 180 minutes after the last puff. Heart rate and blood pressure will be measured 15 min...

On each study day, one puff will be taken with the assigned product every 30 seconds (total of 10 puffs). Blood samples will be collected to measure nicotine 15 minutes before vaping and 2, 5, 15, 30, 60, 120, and 180 minutes after the last puff. Heart rate and blood pressure will be measured 15 minutes before and 2, 10, 15, 30, 60, 120, and 180 minutes after the last puff. Post-use withdrawal, craving, reward, and satisfaction will be assessed 10 minutes and 1 and 3 hours after the last puff using the modified Minnesota Nicotine Withdrawal Scale (MNWS), the Tiffany Questionnaire on Smoking Urges (QSU), and the Positive and Negative Affect Schedule (PANAS) questionnaires. Respiratory symptoms will be assessed at baseline and 5 minutes after the last puff. Ten minutes post-use, the direct effects of the assigned product (e.g. satisfying, calming, pleasant, vape another one right now) will also be assessed using visual analog scales.

Tracking Information

NCT #
NCT04170907
Collaborators
University of Bern
Investigators
Principal Investigator: Evangelia Liakoni, MD Sponsor: Inselspital, Bern University Hospital