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Related Experiment Videos

Nicotine Delivery and Vaping Behavior During ad Libitum E-cigarette Access.

Gideon St Helen1, Kathryn C Ross2, Delia A Dempsey3

  • 1Assistant Professor, Division of Clinical Pharmacology and Experimental Therapeutics, Department of Medicine, University of California, San Francisco, CA.

Tobacco Regulatory Science
|April 11, 2017
PubMed
Summary

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This study shows how adult e-cigarette users vape and absorb nicotine. Vaping patterns result in intermittent nicotine dosing, unlike the rapid delivery from cigarettes, potentially impacting addiction.

Area of Science:

  • Tobacco regulatory science
  • Pharmacokinetics
  • Behavioral science

Background:

  • Electronic cigarette (e-cigarette) use is prevalent.
  • Understanding nicotine intake patterns is crucial for assessing addiction potential.

Purpose of the Study:

  • To characterize vaping behavior and nicotine intake during ad libitum e-cigarette access.
  • To compare nicotine delivery from e-cigarettes to conventional cigarettes.

Main Methods:

  • Thirteen adult e-cigarette users were given 90 minutes of ad libitum access to their usual e-cigarette.
  • Vaping behavior (puff duration, interpuff interval, puff clustering) was recorded.
  • Plasma nicotine levels and subjective effects were measured.

Main Results:

Keywords:
addictive potentiale-cigarettesnicotine pharmacokineticsvaping patternsvaping topography

Related Experiment Videos

  • Average puff duration was 3.5 seconds, with a mean interpuff interval of 118 seconds.
  • Nicotine intake averaged 4.0 mg, with a maximum plasma concentration (Cmax) of 12.8 ng/mL.
  • For tank users, puff count correlated positively with nicotine inhaled and Cmax; interpuff interval correlated negatively with Cmax.

Conclusions:

  • Vaping behavior and nicotine delivery differ significantly from cigarette smoking.
  • E-cigarette nicotine delivery resembles intermittent dosing, contrasting with the bolus dosing of cigarettes.
  • These differences in nicotine delivery patterns may influence the addictive potential of e-cigarettes.