{"id":77851,"date":"2019-11-27T05:09:39","date_gmt":"2019-11-27T10:09:39","guid":{"rendered":"https:\/\/huntsville.dopperonline.ca\/?p=77851"},"modified":"2019-11-26T20:10:05","modified_gmt":"2019-11-27T01:10:05","slug":"popcorn-lung-teen-first-case-of-life-threatening-vaping-injury-commentary","status":"publish","type":"post","link":"https:\/\/doppleronline.ca\/huntsville\/popcorn-lung-teen-first-case-of-life-threatening-vaping-injury-commentary\/","title":{"rendered":"Popcorn lung: Teen first case of life-threatening vaping injury | Commentary"},"content":{"rendered":"
<\/figure>\n

 <\/p>\n

By Karen Bosma<\/a><\/span>, Western University<\/span><\/a><\/em> and Simon Landman<\/a><\/span>, Western University<\/a><\/em><\/span><\/p>\n

E-cigarettes first emerged in North America in 2004<\/a><\/span> \u2014 as a supposedly safer alternative to smoking traditional, carcinogenic, tobacco cigarettes, and as a potential means to help smokers quit smoking altogether.<\/p>\n

<\/broadstreet-zone><\/strong><\/div>\n

However, with heavy marketing, an enticing array of flavours and the potential to inhale drugs other than nicotine, vaping has become increasingly popular, particularly among youth, attracting those who have never smoked before.<\/p>\n

Read more: Vaping is an urgent threat to public health<\/a><\/span><\/span><\/strong>
\n<\/em><\/p>\n

We recently published a report in the Canadian Medical Association Journal<\/em><\/a><\/span> describing a case of severe, life-threatening airway injury related to vaping that occurred in a Canadian youth.<\/p>\n

The 17-year-old, who had been vaping daily using a variety of flavoured cartridges and tetrahydrocannabinol<\/a><\/span> (THC, the psychoactive compound found in cannabis), was hospitalized and required life support in the intensive care unit, including mechanical ventilation and extracorporeal membrane oxygenation (ECMO) \u2014 oxygenation of blood outside of the body.<\/div>\n

First case of vaping \u2018popcorn lung?\u2019<\/h2>\n

After ruling out other potential causes, we suspected the patient had bronchiolitis obliterans<\/a><\/span>. This condition is also known as \u201cpopcorn lung\u201d based on its initial description among microwave popcorn factory workers<\/a><\/span> exposed to chemical flavourants.<\/p>\n

He narrowly avoided the need for a double-lung transplant, spent a total of 47 days in hospital and may have suffered long-term damage to his airways.<\/p>\n

He is currently recovering from his lengthy intensive care unit stay and is abstaining from e-cigarettes, marijuana and tobacco.<\/p>\n

One in four Grade 12 students<\/h2>\n

Vaping has rapidly increased in popularity in recent years. A study of Canadian youth aged 16 to 19<\/a><\/span> found that e-cigarette use among this group increased to 37 per cent in 2018.<\/p>\n

In 2019, current data estimates that one in four Grade 12 students<\/a><\/span> in the United States have used e-cigarettes in the last 30 days. The recent outbreak of cases of \u201ce-cigarette, or vaping product use associated lung injury\u201d (EVALI)<\/a><\/span> has called into question the safety of vaping, and the risks that e-cigarettes pose, particularly to youth.<\/p>\n

Read more: Vaping: As an imaging scientist I fear the deadly impact on people\u2019s lungs<\/a><\/strong><\/span><\/em><\/p>\n

As of Nov. 20, 2019, 2,290 cases of EVALI have been reported<\/a><\/span> in the U.S., with 77 per cent occurring in patients under 35 years of age. To date, there have been 47 deaths confirmed in the EVALI outbreak.<\/p>\n

<\/broadstreet-zone><\/strong><\/div>\n

Researchers at the U.S. Centers for Disease Control and Prevention have worked diligently to identify the causative agent(s) responsible, and suspect that vitamin E acetate may play a role<\/a><\/span>. They have not yet ruled out other chemicals of concern and acknowledge that there may be more than one cause of the outbreak.<\/p>\n

Despite being branded as a safer alternative, e-cigarettes are known to contain harmful substances<\/a><\/span> including nicotine, vitamin E acetate, volatile organic compounds, heavy metals, ultra-fine particles and carbonyl compounds.<\/p>\n

Safe to swallow, not to inhale?<\/h2>\n

For instance, formaldehyde (group 1 human carcinogen) and acetaldehyde (possible human carcinogen)<\/a><\/span> have been found in e-cigarette aerosols, and their concentrations vary between brands and within samples of the same product.<\/p>\n

Of particular concern is the use of flavouring agents in e-cigarettes<\/a><\/span>. There are over 7,700 e-cigarette flavours across 460 brands, with newer marketing practices emphasizing consumer choice and customization of flavours and nicotine content.<\/p>\n

While many of these flavours are listed as \u201cgenerally recognized as safe\u201d under the U.S. Federal Food, Drug and Cosmetic Act, it is important to recognize that this applies to ingestion of these ingredients; aerosolization of flavours safe for swallowing may produce adverse health effects when inhaled into the lungs<\/a><\/span>.<\/p>\n

Chemical diacetyl exceeds safety limits<\/h2>\n

Diacetyl (2,3-butanedione) is one example of such a compound that may be safe for ingestion but toxic when inhaled.<\/p>\n

Diacetyl<\/a><\/span> belongs to a class of organic compounds referred to as diketones, \u03b1-diketones or \u03b1-dicarbonyls, and is known for its characteristic buttery flavour. It is found naturally in some foods and also used as a synthetic flavouring agent<\/a><\/span> in butter, cocoa, caramel, coffee, dairy products and alcoholic beverages.<\/p>\n

Occupational diacetyl inhalation is associated with decline in respiratory function and manifested as obstructive lung disease.<\/p>\n

Importantly, it is a recognized cause of bronchiolitis obliterans, an irreversible pulmonary disorder of small airways resulting in obstructive physiology<\/a><\/span> not reversible with bronchodilators.<\/p>\n

Bronchiolitis obliterans<\/a><\/span> is also known as \u201cpopcorn lung\u201d based on its initial description in patient clusters of microwave popcorn factory workers exposed to diacetyl-based flavourants<\/a><\/span>.<\/p>\n

Vaping industry needs tighter regulation<\/h2>\n

Diacetyl has been found in e-cigarette fluid at levels higher than recommended safety limits<\/a><\/span>, including in some products where packaging clearly stated diacetyl was not an ingredient.<\/p>\n

By publishing this Canadian case, we hope to raise awareness of the varying types of vaping-related lung injuries and the acute and chronic effects of vaping.<\/p>\n

Further research into the safety and toxicity of e-liquid ingredients is essential. We must also push for tighter regulation of the vaping industry.<\/p>\n

Expertise in your inbox. Sign up for The Conversation\u2019s newsletter and get a digest of academic takes on today\u2019s news, every day.<\/a><\/em><\/span><\/p>\n

Karen Bosma<\/a>, Associate Scientist at Lawson Health Research Institute and Associate Professor, Schulich School of Medicine and Dentistry, Western University<\/a><\/em> and Simon Landman<\/a>, Clinical Fellow, Department of Respirology and Sleep Medicine at Schulich School of Medicine & Dentistry, Western University<\/a><\/em><\/p>\n

This article is republished from The Conversation<\/a><\/span> under a Creative Commons license. Read the original article<\/a><\/span>.<\/p>\n

Don\u2019t miss out on Doppler!<\/h5>\n

Sign up here<\/u><\/a> to receive our email digest with links to our most recent stories.
\nLocal news in your inbox three times per week!<\/strong><\/p>\n

<\/broadstreet-zone>\n","protected":false},"excerpt":{"rendered":"

E-cigarettes first emerged in North America in 2004 \u2014 as a supposedly safer alternative to smoking traditional, carcinogenic, tobacco cigarettes, and as a potential means to help smokers quit smoking altogether.<\/p>\n","protected":false},"author":1903,"featured_media":77866,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[26,1949,2268],"class_list":["post-77851","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-commentary","tag-breaking","tag-the-conversation","tag-vaping"],"acf":[],"yoast_head":"\nPopcorn lung: Teen first case of life-threatening vaping injury | Commentary<\/title>\n<meta name=\"description\" content=\"E-cigarettes first emerged in North America in 2004 \u2014 as a supposedly safer alternative to smoking traditional, carcinogenic, tobacco cigarettes ...\" \/>\n<meta name=\"robots\" content=\"index, follow, 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