Tessa Quinn
Enemas are used to help clean the colon and relieve constipation. They are usually administered in hospitals by qualified practitioners and involve inserting a liquid substance into the rectum to aid bowel evacuation. There are several types of enemas, including cleansing enemas, retention enemas, and barium enemas, which are used for diagnostic purposes. The procedure for administering an enema typically involves obtaining informed consent, preparing the solution, positioning the patient, and inserting the liquid into the rectum using a soft, flexible tube. The patient may then be asked to retain the enema for a specified period before expelling it. While enemas are generally considered safe, there are some risks and potential side effects, such as dehydration, allergic reactions, and constipation, that patients should be aware of.
| Characteristics | Values |
|---|---|
| Purpose | To stimulate stool evacuation, usually to relieve constipation, or to administer medicines |
| Administration | A liquid solution is administered through the rectum |
| Solution | Water-based solution with a small concentration of stool softener, baking soda, or apple cider vinegar |
| Temperature | Warming the solution to body temperature may be beneficial. Recommended temperature of 40.5–43.3 °C for non-oil-based enemas |
| Position | Patient lies on their left side with knees drawn to the abdomen |
| Procedure | A soft, flexible rectal tube is inserted into the rectum, through which the solution flows into the colon |
| Retention | Patient retains the enema as long as required, which may be 15 minutes or more |
| Post-procedure | Patient may return to normal diet and activities unless otherwise advised |
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What You'll Learn
- Patient preparation: fasting, laxatives, clothing removal, and bladder emptying
- Solution preparation: ingredients, temperature, and expiry
- Patient positioning: lying on the left side, knees drawn to the abdomen
- Solution administration: insertion of a rectal tube, inflation of a balloon, and flow of the solution into the rectum
- Post-procedure care: removal of the tube, X-rays, and patient assistance
Patient preparation: fasting, laxatives, clothing removal, and bladder emptying
Patient preparation is an important step in the process of administering an enema. This is to ensure the comfort and safety of the patient, as well as to effectively prepare the body for the procedure.
Fasting is usually recommended for about eight hours before the procedure. This means that the patient should refrain from eating or drinking after midnight on the night before the enema. It is important that the patient follows this instruction to ensure the procedure can be carried out effectively and safely.
Laxatives may be used as part of the bowel preparation process, which begins the day before the enema. It is important to follow the instructions provided by the healthcare team regarding the use of laxatives, as they can cause dehydration and electrolyte changes if not used correctly.
The patient will also be asked to remove their clothing, jewellery, or any other objects that may get in the way of the procedure. The removal of clothing is necessary to access the rectum and ensure that the patient is comfortable during the procedure. The patient will usually be provided with a gown to wear during the procedure.
To reduce discomfort during the procedure, patients may be advised to empty their bladder before the enema administration. This is a recommendation from Dougherty and Lister (2004), who also advise that the enema solution should be warmed to body temperature to stimulate the rectal mucosa and prevent cramping.
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Solution preparation: ingredients, temperature, and expiry
Solution preparation for an enema involves mixing and measuring the solution and transferring it to a container. The solution should be prepared according to the instructions on the kit or as advised by a healthcare professional. It is important to ensure that the solution is at room temperature as liquid that is too hot or cold can be harmful.
The ingredients of the solution can vary depending on the purpose of the enema. Tap water enemas are used to soften stool, allowing it to pass more easily. Some people create homemade solutions containing ingredients such as soap, vinegar, milk, or coffee, but these have not been tested for safety and may irritate or injure the colon. It is recommended to purchase a safe, pre-made enema solution instead.
Cleansing enemas are used to quickly clear the colon, usually consisting of a large volume of fluid (500-1000 milliliters). Small-volume enemas (less than 500 milliliters) are used to clean the lower part of the colon. Retention enemas require the fluid to be retained for a longer period to allow the solution to work inside the colon. For example, a mineral oil enema lubricates the colon to aid defecation.
Barium enemas are used to insert a liquid containing a chalky white powder that makes problem areas easier to spot on an X-ray. Enemas can also be used to administer medication directly into the colon, such as treatments for gastrointestinal diseases like ulcerative colitis.
It is important to note that enemas have an expiry date, and it is not recommended to use them after this date as they may not work optimally. Always follow the instructions provided with the enema kit or consult a healthcare professional for specific advice.
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Patient positioning: lying on the left side, knees drawn to the abdomen
To prepare for an enema, the patient should be positioned lying on their left side with their knees drawn to their abdomen. This position eases the passage and flow of fluid into the rectum. It also aids enema distribution and retention due to gravity and the anatomical structure of the sigmoid colon.
An incontinence sheet should be placed underneath the patient, and the patient should be advised to empty their bladder before the procedure to reduce discomfort. The patient should also be instructed to breathe slowly and deeply during the procedure to lessen any discomfort.
The patient will be asked to lie on their side on an exam table. The technologist or radiologist will then insert a soft, flexible rectal tube into the patient's rectum, allowing the enema solution to flow into the colon. A balloon near the end of the tube will be inflated to prevent leakage.
After the procedure, the technologist will deflate the balloon and remove the tube. The patient will be helped from the table and to the bathroom, if needed. The patient may return to their normal diet and activities unless otherwise instructed.
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Solution administration: insertion of a rectal tube, inflation of a balloon, and flow of the solution into the rectum
Solution Administration
The administration of an enema involves inserting a lubricated rectal tube into the rectum. This tube is usually around 4 inches long. The patient is asked to lie on their side on an examination table, with their knees pulled up to their chest. This position allows for the easy flow of the solution into the colon.
Once the tube is in place, a balloon near the end of the tube is inflated to prevent the solution from leaking out. The balloon is filled with around 20 to 25 ml of water, creating a plug.
The solution, which is often a salt water mixture, is then slowly introduced into the colon. The patient may experience cramping and discomfort during this stage, which can be alleviated by taking slow, deep breaths.
It is important to follow the instructions provided by a medical professional to ensure the correct amount of solution is administered. Too much fluid can damage the colon.
After the solution has been administered, the technologist will deflate the balloon and remove the tube. The patient may need assistance getting to the bathroom, as they will likely need to have a bowel movement.
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Post-procedure care: removal of the tube, X-rays, and patient assistance
An enema is a generally safe procedure when done correctly, but there are some post-procedure considerations to keep in mind to ensure patient safety and comfort. Firstly, the removal of the tube is an important step. After the enema solution has been administered, the healthcare provider will slowly deflate the balloon attached to the tube and gently remove it from the patient's rectum.
Following the removal of the tube, X-rays may be taken, especially in the case of a barium enema, which is used to diagnose problems in the colon and rectum. The radiologist may fill the intestine with air, which appears black on X-ray film, while the barium shows up as white, enhancing the visibility of smaller details. This procedure is known as a double contrast study.
After the enema and any necessary X-rays, the patient may require assistance. It is important to slowly get up and walk to the toilet, as some people may feel faint or dizzy. Patients should not worry if they cannot hold the enema solution for the recommended 5 to 10 minutes, as this is common. Mild stomach cramps and a feeling of urgency to go to the toilet are also normal. Patients should stay near a toilet for about an hour after the procedure and can usually resume their normal diet and activities unless advised otherwise by their healthcare provider.
It is important to note that enemas can lead to dehydration if the barium or enema solution is not completely expelled from the body. Patients should be aware of this and ensure they are properly hydrated post-procedure. Additionally, constipation or impacted stool can occur if the barium does not pass out of the body, so patients should seek medical advice if they experience these issues. Overall, it is important to follow the instructions provided by the healthcare team and ask any questions to ensure a safe and comfortable experience.
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