Thirdly, the volume of flatus produced by patients with irritable bowel syndrome who have pain and abdominal distension would be tolerated in normal subjects without any complaints of pain. The proportion of hydrogen produced may be increased in some patients with irritable bowel syndrome, but this does not affect the total volume. Secondly, studies aiming to quantify the total volume of gas produced by patients with irritable bowel syndrome (some including gas emitted from the mouth by eructation) have consistently failed to demonstrate increased volumes compared to healthy subjects. First, in normal subjects, even very high rates of gas infusion into the small intestine (30 mL/min) is tolerated without complaints of pain or bloating and harmlessly passed as flatus per rectum. However, three significant pieces of evidence refute this theory. In the past, functional bowel disorders such as irritable bowel syndrome that produced symptoms of bloating were attributed to increased production of intestinal gas. Patients may complain of bloating as abdominal distension, discomfort and pain from "trapped wind". Generally speaking, there are four different types of complaints that relate to intestinal gas, which may present individually or in combination. Derived terms include vaginal flatulence, otherwise known as a queef. These definitions highlight that many people consider "bloating", abdominal distension or increased volume of intestinal gas, to be synonymous with the term flatulence (although this is technically inaccurate).Ĭolloquially, flatulence may be referred to as "farting", "pumping", "trumping", "blowing off", "pooting", "passing gas", "breaking wind", "backfiring", or simply (in American English) "gas" or ( British English) "wind". Non-medical definitions of the term include "the uncomfortable condition of having gas in the stomach and bowels", or "a state of excessive gas in the alimentary canal". When excessive or malodorous, flatus can be a sign of a health disorder, such as irritable bowel syndrome, celiac disease or lactose intolerance. Furthermore, eructation (colloquially known as "burping") is sometimes included under the topic of flatulence. There are several general symptoms related to intestinal gas: pain, bloating and abdominal distension, excessive flatus volume, excessive flatus odor, and gas incontinence. However, holding the gases inside is not healthy. Thus, many people either let their flatus out quietly or even hold it completely. Both the sound and odor are sources of embarrassment, annoyance or amusement ( flatulence humor). The noise commonly associated with flatulence is produced by the anus and buttocks, which act together in a manner similar to that of an embouchure. It is also normal for intestinal gas to have a feculent or unpleasant odor, which may be intense. It is normal to pass flatus ("to fart"), though volume and frequency vary greatly among individuals. įlatus is brought to the rectum and pressurized by muscles in the intestines. The scientific study of this area of medicine is termed flatology. A proportion of intestinal gas may be swallowed environmental air, and hence flatus is not entirely generated in the stomach or bowels. "Flatus" is the medical word for gas generated in the stomach or bowels. Illustration of a man suffering from "wind"įlatulence, in humans, is the expulsion of gas from the intestines via the anus, commonly referred to as farting, tooting, or passing gas. Farting, breaking wind, passing gas, cutting the cheese, cutting one loose, ripping one, guffing, chuffing, trumping, pumping, blowing off, letting off, foisting, brapping
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