This MedLibrary.org supplementary page on Eructation is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| ICD-10 | R14. |
|---|---|
| ICD-9 | 787.3 |
Belching, also known as burping, ructus, or eructation, involves the release of gas from the digestive tract (mainly esophagus and stomach) through the mouth. It is usually accompanied with a typical sound and, at times, an odor.
Contents |
Physiology
Belching is typically caused by swallowing air (aerophagia) when eating or drinking and subsequently expelling it, so in this case the expelled gas is mainly a mixture of nitrogen and oxygen. Burps can also be caused by drinking carbonated drinks such as beer, soft drinks, or champagne, in which case the expelled gas is carbon dioxide from the drink itself. Common diabetes drugs metformin 1 and Byetta 2 can cause belching, especially at higher doses. This often resolves in a few weeks. Belching combined with other symptoms such as dyspepsia, nausea and heartburn may be a sign of an ulcer or hiatal hernia, and should be reviewed by a physician. 3
The sound of burping is caused by the vibration of the upper esophageal sphincter4 as the gas passes through it. The current Guinness world record for the loudest burp is 107.1 dB, set by Paul Hunn from London, England in 2008.5 (This would be noticeably louder than a chainsaw at a distance of 1 meter.)
Social context and etiquette
In many parts of the world, audible burping is not much appreciated and is therefore considered to be somewhat impolite (although generally not as much as flatulence). In China, however, fervent burping is actually considered to be a sign of gratitude and satisfaction.6 Sometimes, children and teenagers engage in burping contests to determine who can produce the loudest burp, the longest burp, the most guttural burp, the burping of words, songs, or even the alphabet.
Infant burping
Babies are particularly subject to accumulation of gas in the stomach while feeding, and this can cause considerable agitation to the child unless it is burped. The act of burping an infant involves placing the child in a position conducive to gas expulsion (for example holding the infant up to the adult's shoulder, with the infant's stomach resting on the adult's chest) and then lightly patting it on the lower back so that he or she burps. This practice is not universal, for instance in the Czech Republic, there is no tradition of burping babies.7
Because burping can cause vomiting in infants, the burp cloth or burp pad is sometimes employed on the shoulder to protect the adult's clothing.
In animals
Many other mammals, such as cattle, dogs, and sheep also burp. In the case of ruminants, the gas expelled is actually methane produced as a byproduct of the animal's digestive process. Anaerobic organisms such as Escherichia coli (E. coli) and methanogenic archaea produce this effect. An average cow is thought to emit between 542 litres (if located in a barn) and 600 litres (if in a field) of methane per day through burping and exhalation, making commercially farmed cattle a major contributor to the greenhouse effect. 95% of this gas is emitted through belching.8 This has led scientists at the Commonwealth Scientific and Industrial Research Organisation of Perth, Australia, to develop an anti-methanogen vaccine to minimize methane in cattle burps.9
Some fish are also known to expel air from their gills; here the burp is produced by gas being expelled from the gas bladder.
References
 |
This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (January 2008) |
- ^ DailyMed: About DailyMed
- ^ DailyMed: About DailyMed
- ^ Eructation (Professional Guide to Signs & Symptoms (Fifth Edition)) - WrongDiagnosis.com
- ^ GI Motility online: Upper esophageal sphincter - Ivan M. Lang, D.V.M., Ph.D.
- ^ http://www.123exp-biographies.com/t/00034518938/
- ^ [1]
- ^ Common Sense about Babies and Children, H Jolly - 1983 - Unwin Paperbacks
- ^ MyCattle Health News
- ^ Burp vaccine cuts greenhouse gas emissions - New Scientist
External links
- Cow methane production
- from Webmd.com
- International Burping Movement, promoting burping worldwide (French)
|
|||||||||||||||||||
Wikipedia content modification information:
- This page was last modified on 6 January 2009, at 00:34.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Eructation".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.