Term
| What are the 4 uses of laxatives? |
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Definition
1.Soften stool
2.Increase stool volume
3.Speed up the stool passage through the intestine
4.Facilitate evacuation from rectum |
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Term
| What is the difference between a laxative effect and catharsis? |
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Definition
| A laxative effect refers to the production of a soft, formed stool over a period of 1 or more days. Catharsis refers to prompt, fluid evacuation of the bowel. |
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Term
| What is the principle function of the colon? |
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Definition
| To absorb water and electrolytes |
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Term
| 20-60gms of this substance a day optimizes intestinal function. |
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Definition
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Term
| What is the principle cause of constipation? |
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Definition
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Term
| What do all of the following have in common in regards to laxatives? Abdominal pain, nausea, cramps, appendicitis, diverticulitis, colitis, patients with acute surgical abdomen, fecal impaction or bowel obstruction, and habitual use. |
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Definition
| These are all Contraindications to laxative use. |
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Term
| What is your DOC when you need a bulk-forming laxative? |
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Definition
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Term
| What is your preferred agent for temporary treatment of constipation? |
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Definition
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Term
| What is your preferred laxative for diverticulosis and IBS? |
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Definition
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Term
| Which type of laxative is used to increase the amount of water in the stool? |
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Definition
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Term
| Name 3 of the bulk-forming preparations. |
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Definition
1.Psyllium
2.Methylcellulose
3.Polycarbophil |
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Term
| Name 2 of the Surfactant preparations. |
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Definition
1.Docusate sodium
2.Docusate calcium |
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Term
| Which kind of laxative is most widely used and abused? |
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Definition
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Term
| What is the DOC when you need a rapid and thorough evacuation of the bowel (like in preparation for radiologic procedures)? |
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Definition
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Term
| Name 3 stimulant laxative preparations. |
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Definition
1.Bisacodyl
2.Senna
3.Cascara sagadra |
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Term
| Which type of stimulant laxative can be administered rectally as well as by mouth? |
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Definition
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Term
| Which stimulant laxative may result in a harmless yellow-brown or pink color to the urine? |
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Definition
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Term
| What is the only stimulant laxative that acts on the small intestine? |
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Definition
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Term
| Name 2 bulk forming laxatives and their site of action |
|
Definition
1. Psyllium
2. Methylcellulose
(SI & LI) |
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Term
| Name 2 surfactant laxatives and their site of action. |
|
Definition
1. Docusate sodium
2. Docusate calcium
(SI & LI) |
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Term
| Name 3 Stimulant laxatives and their sit of action. |
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Definition
1. Bisacodyl (colon)
2. Senna
3. Castor oil (SI) |
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Term
| Which 2 types of laxatives are good to use before evacuation before diagnostic and surgical procedures? |
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Definition
| Stimulant and Osmotic (in high doses) |
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Term
| Which type of laxative in high doses will purge the bowel of poisons and evacuate dead parasites? |
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Definition
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Term
| Name 3 types of Osmotic laxatives and their site of action. |
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Definition
1.Magnesium hydroxide
2. Magnesium citrate
3. Polyethylene gylcol
(all act on SI & LI) |
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Term
| Which laxative produces a laxative effect by lubrication and can only be administered rectally? |
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Definition
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Term
| Which laxative is used in patients with hepatic encephalopathy to excrete ammonia? |
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Definition
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Term
| Name 4 misc. laxatives and their site of action. |
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Definition
1. Mineral oil (colon)
2. Glycerin supp. (colon)
3. Lactulose (colon)
4. Polyethlene (SI & LI) |
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Term
| What is the MOA for Methylcellulose and Psyllium? |
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Definition
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Term
| What is the MOA of Docusate sodium and Docusate calcium? |
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Definition
| Increased water in stool & secretion of water and electolytes into intestine. |
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Term
| How is the MOA of mineral oil and glycerin suppository different from all other laxatives? |
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Definition
| They both lubricate as well as stimulate peristalsis |
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