electronic cigarettes: miracle or menace - pehsu · 2019-08-22 · electronic cigarettes: miracle...
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READ ME FIRST Directions to User: How to Use Each Slide Template
Note: The colors in these instructions are different than
the color palette used throughout this slide deck, but the slide types are the same.
Electronic Cigarettes: Miracle or Menace PEHSU Grand Rounds
READ ME FIRST Directions to User: How to Use Each Slide Template
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This presentation was supported by the American College of Medical Toxicology (ACMT) and funded (in part) by the cooperative agreement award number 1 U61TS000238-01 from the Agency for Toxic Substances and Disease Registry (ATSDR). Acknowledgement: The U.S. Environmental Protection Agency (EPA) supports the PEHSU by providing partial funding to AT S D R u n d e r I n t e r - A g e n c y A g r e e m e n t n u m b e r DW-75-92301301-9. Neither EPA nor ATSDR endorse the purchase of any commercial products or services mentioned in PEHSU publications.
PEHSU Grand Rounds
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At the end of the presentation, the participant will be able to: • Understand the biological role of nicotine in the brain and intent of the electronic cigarette • Discuss the dangers of electronic cigarettes regarding unintentional exposures in toddlers and adolescent intentional use • Describe the exposures of second-hand inhalation of vapors from electronic cigarettes • Understand state and federal regulations as it pertains to prevention of exposures to minors and environmental contamination
Objectives
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• 10 month old with vomiting, tachycardia, grunting respirations and truncal ataxia after ingesting “small” amount of e-liquid nicotine
• Vape shop states it contained 1.8% nicotine (18 mg per milliliter) and unknown concentrations of wintergreen (methyl salicylate), glycerin and propylene glycol
Case Presentation
NEJM 2014, DOI: 10.1056/NEJMc1403843
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OTC liquid nicotine products
NEJM 2014, DOI: 10.1056/NEJMc1403843
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Introduced as alternative to smoking Considered part of tobacco harm reduction strategy • Psycho-behavioral (motor and sensory
stimulation) • Chemical aspects of addiction Recent concerns by World Health Organization and Food and Drug Administration
Electronic Cigarettes
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Nicotine
Benowitz et al. Handb Ex Pharmacol. 2009; 192: 29-60
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Nicotine absorption – electronic cigarette
Konstantinos et al. Scientific Reports 2014; 4: 4133
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Nicotine absorption – other products
Benowitz et al. Handb Ex Pharmacol. 2009; 192: 29-60
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Nicotine distribution
www.rise.duke.edu. The Addictive Nature of Nicotine. Accessed 05/11/2015
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Nicotine metabolism
Benowitz et al. Handb Ex Pharmacol. 2009; 192: 29-60
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Nicotine pharmacodynamics
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• Low dose – stimulant effects (e.g., tachycardia)
• CNS toxicity – ataxia, seizures • Increasing dose – muscarinic toxicity of
extreme secretions and GI disturbance • High dose – neuromuscular blockade,
respiratory failure, and death. • Lethal dose – 1-13 mg/kg of body weight (1
teaspoon (5 ml) of 1.8% could be lethal in 90 kg person.
Nicotine Toxicity
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• Liquid nicotine products often express the concentration (mg/mL) as “mg”
• Products marked “0 mg/mL” nicotine may contain significant amounts of nicotine, up to 10 mg per cartridge
• Nicotine toxicity is strongly influenced by history of nicotine use/tolerance
•
Nicotine Exposure
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Cameron et al. Tob Control 2014; 23: 77-78
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Adult Toxicity
Prepared by: Rebecca Smith, B.S., PharmD , Connecticut Poison Control Center
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Child Toxicity
Prepared by: Rebecca Smith, B.S., PharmD , Connecticut Poison Control Center
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Are electronic cigarettes successful for smoking cessation?
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• Originally marketed as a tobacco reduction or smoking cessation product, recreational use of e-cigarettes in adolescents and adults has doubled from 2010 to 2012.
• Current use in Great Britain rose from 2.7% of adult smokers studied in 2010 to 6.7% in 2012.
• Alternatively, adolescent data reveals that 9.3% of ever cigarette users had reported never smoking conventional cigarettes
Electronic Cigarettes
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Number of calls to poison centers for cigarette or e-cigarette exposures, by month — United States, September 2010–February 2014
MMWR 04/04/2014
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Survey with 1 year follow-up
Brose et al. Addiction early online 23 April 2015
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Adolescent Use
Dutra et al. JAMA Pediatrics. 2014; 168: 610-617
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Adolescent Use
MMWR. 2013; 35. September 6, 2013
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Adolescent Use
Goniewicz et al. Journal of Adolescent Health. 2014; 55: 713-715
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Prefrontal Cortex
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Goriounova et al. Cold Spring Harbor Perspectives in Medicine 2012; 2:a012120
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• Measured airborne markers of secondhand exposures (nicotine, PM2.5, CO, and VOCs)
• Secondhand exposure to nicotine but not to combustion toxicants.
• Nicotine exposure 10X in regular cigarettes compared to electronic cigarettes.
Environmental Exposures
Czogala et al. Nic and Tob Res. 2013
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Education on dangers from secondhand tobacco smoke have been largely successful in resulting in smoke-free homes and/or cars. Perception of “safer” smoking may result in increased use of e-cigs indoors Increased exposure to nicotine, propylene glycol, glycerin and other toxicants. Studies on third-hand smoke from e-cigs deposits of nicotine on indoor surfaces and absorbed by adult non-users.
Secondhand smoke
Schober et al. Int J hyg Environ Health. 2014; 217:628-637 Goniewicz et al. Nicotine Tob Res. 2015; 17: 256-268 Flouris et al. Inhal Toxicol. 2013; 25: 91-101
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• (April 2014) Proposed rule for comments on whether to regulate e-cigs and additional tobacco products including cigars, pipe tobacco, certain dissolvables that are not “smokeless”, gels and water pipe tobacco.
• Proposed rules would ban sales to minors, require health warnings, require registration with FDA, and allows health claims if scientific evidence supports claim.
Legislation and FDA
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The FDA Center for Tobacco Products will hold the third, and final, public workshop to obtain information on electronic cigarettes and the public health on June 1-2, 2015. Even if you cannot attend the public workshop, you are invited to submit comments, supported by research and data, regarding electronic cigarettes and the public health. FDA is accepting public comments on e-cigarettes and the public health through July 2, 2015.
Electronic Cigarettes and the Public Health: Submit Your Comments
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Sales to Minors
MMWR. 63: December 12, 2014
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Indoor Smoking
MMWR. 63: December 12, 2014
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• Electronic cigarettes are intended to promote cessation of conventional tobacco use, but has not been shown to be effective.
• Nicotine is highly toxic and may cause significant toxicity in young children due to overdoses and detrimental effects on adolescents.
• Environmental exposures from second- and third-hand smoke can occur, but is less than conventional smoking.
• Regulatory and public health policies are needed.
Summary
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Questions?