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An enema (plural enemata or enemas) is the procedure of introducing liquids into the rectum and colon via the anus. Enemas can be carried out for medical reasons (as a treatment for constipation), as a remedy for encopresis, as part of alternative health therapies, and also for erotic purposes, particularly as part of BDSM activities. In earlier times, they were often known as clysters, and were probably used more frequently than at present.
Additional recommended knowledge
The main medical usages of enemas are:
In certain countries such as the United States, customary enema usage went well into the 20th century; it was thought a good idea to cleanse the bowel in case of fever; also, pregnant women were given enemas prior to labor, supposedly to reduce the risk of feces being passed during contractions. Under some controversial discussion, pre-delivery enemas were also given to women to speed delivery by inducing contractions. This latter usage has since been largely abandoned, because obstetricians now commonly give oxytocin to induce labor and because women generally found the procedure unpleasant.
Many self-given enemas used at home are the pre-packaged, disposable, sodium phosphate solutions in single-use bottles sold under a variety of brand names, or in generic formats. Costing up to a dollar per use, these units come with a pre-lubricated nozzle attached to the top of the container. Some enemas are administered using so-called disposable bags connected to disposable tubing (despite the names, such units can commonly be used for many months or years without significant deterioration).
Patients who want easier, more gently-accepted enemas often purchase Combination Enema Syringes which are commonly referred to as "closed top" syringes, and which can also be used as old-fashioned hot water bottles, so as to relieve aches and pains via gentle heat administrations to parts of the body. Cost for each enema can be as little as a few pennies for the baking soda added to ordinary tap water.
In medical or hospital environments, reusable enema equipment is now rare because of the expense of disinfecting a water-based solution. For a single-patient stay of short duration, an inexpensive disposable enema bag can be used for several days or weeks, using a simple rinse out procedure after each enema administration. The difficulty comes in from the longer time period (and expense) required of nursing aides to give a gentle, water-based enema to a patient, as compared to the very few minutes it takes the same nursing aide to give the more irritating, cold, pre-packaged sodium phosphate unit.
For home use, disposable enema bottle units are common, but reusable rubber or vinyl bags or enema bulbs may also be used. In former times, enemas were infrequently administered using clyster syringes. If such commercially-available items are not at hand, ordinary water bottles are sometimes used.
Colonic irrigation or colon hydrotherapy is a large-volume enema which cleanses the whole colon. Colonic irrigation was in vogue for health and hygienic purposes at the beginning of the 20th century (see John Harvey Kellogg) and remains popular as an alternative health therapy in many parts of the world. Advocates believe that, when carried out by trained personnel using clean or sterilized equipment, colonic irrigation is a safe and valuable tool for eliminating toxins from the body and restoring normal muscular activity in the colon. However, there have been cases of intestinal perforation due to improperly done colonic irrigations. The actual medical benefit of colonic irrigation is controversial.
Enema Usage in Rectal Drug Administration
Enemas have also been used for ritual rectal drug administration such as balché, alcohol, tobacco, peyote, and other hallucinogenic drugs and entheogens, most notably by the Mayans and also some other American Indian tribes. Some tribes continue the practice in the present day. 
People who wish to become intoxicated faster have also been known to use enemas as a method to instill alcohol into the bloodstream, absorbed through the membranes of the colon. However, great care must be taken as to the amount of alcohol used. Only a small amount is needed as the intestine absorbs the alcohol more quickly than the stomach. Deaths have resulted due to alcohol poisoning via enema. 
For more information on rectal drug administration, see route of administration.
The paraphilia directed towards enemas is known as klismaphilia, the enjoyment of enemas. Enemas may be used as part of BDSM activities for either males or females, or as a regular sexual activity for an individual or between partners. In many cities, enemas are available as a service from practitioners in the sex industry to cater to klismaphiliac desires. Enemas can be pleasurable to either sex, and in males, enemas can stimulate the prostate gland. Unexpected erections are common in medical settings, even if the person would otherwise consider it an unpleasant procedure.
An enema may also be used prior to anal sex or anilingus in order to enhance the sensation of intercourse, or to remove feces prior to sex, possibly reducing bacterial transmission and risk of infection, or just to reduce the possibility of fecal material adhering to the genitals or sex toys used during the following activity.
Improper administration of an enema may cause electrolyte imbalance (with repeated enemas) or ruptures to the bowel or rectal tissues resulting in internal bleeding, however these occurrences are rare in healthy, sober adults. Internal bleeding or rupture may leave the individual exposed to infections from intestinal bacteria. Blood resulting from tears in the colon may not always be visible, but can be distinguished if the feces are unusually dark or have a red hue. If intestinal rupture is suspected, medical assistance should be obtained immediately. 
The enema tube and solution may stimulate the vagus nerve, which triggers an arrhythmia such as bradycardia. Enemas should not be used if there is an undiagnosed abdominal pain since the peristalsis of the bowel can cause an inflamed appendix to rupture.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Enema". A list of authors is available in Wikipedia.|