Featured Research

from universities, journals, and other organizations

Secondhand smoke in cars, bars impairs breathing within 20 minutes

Date:
October 22, 2012
Source:
American College of Chest Physicians
Summary:
Heavy concentrations of secondhand smoke, such as those found in smoke-filled bars and cars, can lead to airway restriction for bystanders within minutes of exposure. The study showed that after 20 minutes of exposure to highly concentrated secondhand smoke, participants experienced near immediate physiologic changes, including airway resistance and impedance.

Heavy concentrations of secondhand smoke, such as those found in smoke-filled bars and cars, can lead to airway restriction for bystanders within minutes of exposure. The study, presented at CHEST 2012, the annual meeting of the American College of Chest Physicians, showed that after 20 minutes of exposure to highly concentrated secondhand smoke, participants experienced near immediate physiologic changes, including airway resistance and impedance.

Related Articles


"Bars and cars are places where high concentrations of fine particles usually occur because of smoking. Nonsmokers are then forced to inhale extreme amounts of particulates directly into their lungs," said Panagiotis Behrakis, MD, FCCP, of the University of Athens, Greece. "The observed short-term effects of secondhand smoke tell us that even a short exposure is indeed harmful for normal airways."

In order to test the effects of short-term secondhand smoke exposure, Dr. Behrakis and colleagues from the University of Athens and the Hellenic Cancer Society in Greece, and the Harvard School of Public Health, exposed 15 healthy participants to air heavily concentrated with smoke particulates within an exposure chamber -- simulating a bar or moving car -- for 20 minutes. During this time, researchers measured participants' total respiratory impedance, resistance, and reactance with the use of an impulse oscillometry, a noninvasive way of measuring the physical properties of respiratory movement during quiet breathing. Results showed that short-term exposure to concentrated secondhand smoke significantly and immediately impacted participants' airways, invoking such physiologic changes as increased airway impedance and resistance. Participants showed no clinical signs or feelings of discomfort during the test.

Although exposure to secondhand smoke appears to be slightly less harmful than direct smoking, Dr. Behrakis believes secondhand smoking should be recognized as a global health issue. "Secondhand smoking is the most widespread form of violence exerted on children and workers on a global level. The whole issue of secondhand smoke needs to be recognized as a global problem of human rights violation."

"Research has shown that exposure to secondhand smoke can have short and long-term effects on our health, especially in children," said ACCP President-Elect Darcy D. Marciniuk, MD, FCCP. "Although select states and cities have taken steps to eliminate smoking in restaurants, bars, and other public areas, more state and local governments need to acknowledge the dangers of secondhand smoking and follow suit."


Story Source:

The above story is based on materials provided by American College of Chest Physicians. Note: Materials may be edited for content and length.


Cite This Page:

American College of Chest Physicians. "Secondhand smoke in cars, bars impairs breathing within 20 minutes." ScienceDaily. ScienceDaily, 22 October 2012. <www.sciencedaily.com/releases/2012/10/121022080921.htm>.
American College of Chest Physicians. (2012, October 22). Secondhand smoke in cars, bars impairs breathing within 20 minutes. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2012/10/121022080921.htm
American College of Chest Physicians. "Secondhand smoke in cars, bars impairs breathing within 20 minutes." ScienceDaily. www.sciencedaily.com/releases/2012/10/121022080921.htm (accessed October 24, 2014).

Share This



More Science & Society News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Fears Keep Guinea Hospitals Empty

Ebola Fears Keep Guinea Hospitals Empty

AP (Oct. 23, 2014) Fears of Ebola are keeping doctors and patients alike away from hospitals in the West African nation of Guinea. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Despite Rising Death Toll, Many Survive Ebola

Despite Rising Death Toll, Many Survive Ebola

AP (Oct. 23, 2014) The family of a Dallas nurse infected with Ebola in the US says doctors can no longer detect the virus in her. Despite the mounting death toll in West Africa, there are survivors there too. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Academic Scandal Shocks UNC

Academic Scandal Shocks UNC

AP (Oct. 23, 2014) A scandal involving bogus classes and inflated grades at the University of North Carolina was bigger than previously reported, a new investigation found. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Chameleon Camouflage to Give Tanks Cloaking Capabilities

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Reuters - Innovations Video Online (Oct. 22, 2014) Inspired by the way a chameleon changes its colour to disguise itself; scientists in Poland want to replace traditional camouflage paint with thousands of electrochromic plates that will continuously change colour to blend with its surroundings. The first PL-01 concept tank prototype will be tested within a few years, with scientists predicting that a similar technology could even be woven into the fabric of a soldiers' clothing making them virtually invisible to the naked eye. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Science & Society

Business & Industry

Education & Learning

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins