Which type of laxative causes peristalsis by irritating the bowel?
Stool softener
Saline/osmotic laxative
Stimulant laxative
Bulk-forming laxative
The Correct Answer is C
A) Stool softener:
Stool softeners, such as docusate sodium, work by adding moisture to the stool, making it softer and easier to pass. They do not directly stimulate bowel movements or peristalsis through irritation of the bowel lining.
B) Saline/osmotic laxative:
Saline or osmotic laxatives, such as magnesium hydroxide (milk of magnesia) and polyethylene glycol (PEG), work by drawing water into the intestines, which softens the stool and increases bowel motility. They do not primarily act by irritating the bowel lining.
C) Stimulant laxative.
Stimulant laxatives work by directly stimulating the nerves in the intestines, which increases the rhythmic contractions of the intestines (peristalsis) and promotes bowel movements. These medications irritate the bowel lining, leading to increased motility and expulsion of stool. Examples of stimulant laxatives include bisacodyl and senna.
D) Bulk-forming laxative:
Bulk-forming laxatives, such as psyllium and methylcellulose, work by increasing the bulk and water content of the stool, which stimulates bowel movements. They do not directly irritate the bowel lining to promote peristalsis. Instead, they absorb water and swell in the intestines, creating a larger, softer stool that is easier to pass.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D","E"]
Explanation
A. Wheezing: Wheezing is not a typical symptom of allergic rhinitis. It is more commonly associated with asthma or other lower respiratory conditions.
B. Sneezing: Sneezing is a common symptom of allergic rhinitis. It is often triggered by exposure to allergens such as pollen, dust mites, or pet dander.
C. Watery eyes: Watery eyes, also known as allergic conjunctivitis, frequently accompany allergic rhinitis. This symptom occurs due to inflammation of the conjunctiva in response to allergen exposure.
D. Nasal congestion: Nasal congestion, or a stuffy nose, is a hallmark symptom of allergic rhinitis. It occurs as a result of inflammation and swelling of the nasal mucosa in response to allergens.
E. Urticaria: Urticaria, commonly referred to as hives, may occur in some individuals with allergic rhinitis. However, it is more commonly associated with other types of allergic reactions, such as food allergies or drug allergies.
Correct Answer is C
Explanation
A) Nighttime pain:
Nighttime pain, also known as nocturnal pain, is a symptom associated with both duodenal and gastric ulcers. It occurs when the stomach or duodenal lining is empty and no food is present to buffer the effect of gastric acid. While nighttime pain can occur in both types of ulcers, it is not more specific to duodenal ulcers compared to gastric ulcers.
B) Anorexia:
Anorexia, or loss of appetite, can occur in both duodenal and gastric ulcers due to factors such as pain, discomfort, and inflammation. It is not a symptom that is more commonly associated with one type of ulcer over the other.
C) Postprandial pain (occurring after a meal).
Postprandial pain, which occurs after a meal, is more commonly associated with duodenal ulcers than gastric ulcers. This pain typically occurs 2 to 3 hours after eating, as it is often triggered by the release of gastric acid and duodenal contractions stimulated by food intake. Duodenal ulcers tend to cause this type of pain because they are located in the duodenum, the first part of the small intestine, which is exposed to gastric acid and bile after a meal.
D) Nausea and vomiting:
Nausea and vomiting can occur in both duodenal and gastric ulcers, particularly if the ulcer is accompanied by complications such as obstruction or perforation. These symptoms are not more specific to duodenal ulcers compared to gastric ulcers.
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