What is the mechanism of action of a stimulant laxative?
Lubricates the intestinal wall and softens stool
Draws water into the bowel to facilitate the passage of feces.
Increases bulk and stimulates peristalsis.
Irritates the intestine directly, promoting peristalsis and evacuation.
The Correct Answer is D
A. Lubricates the intestinal wall and softens stool: This describes the action of lubricant laxatives, such as mineral oil, not stimulant laxatives.
B. Draws water into the bowel to facilitate the passage of feces: This describes osmotic laxatives, such as polyethylene glycol or lactulose.
C. Increases bulk and stimulates peristalsis: This describes bulk-forming laxatives, like psyllium, which absorb water and increase stool size.
D. Irritates the intestine directly, promoting peristalsis and evacuation: This is the correct mechanism for stimulant laxatives, such as bisacodyl and senna. They stimulate the nerve endings in the intestinal lining, leading to increased bowel movement activity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Decrease the client's fluid intake: In cirrhosis with ascites, the liver's ability to regulate fluid balance is impaired. Decreasing fluid intake helps prevent further accumulation of fluid in the abdomen (ascites).
B. Increase the client's sodium intake: Sodium intake should be restricted in patients with cirrhosis and ascites to reduce fluid retention and prevent worsening edema and ascites.
C. Decrease the client's carbohydrate intake: Carbohydrate intake is generally not restricted in cirrhosis unless there are concerns about hyperglycemia. It's important to maintain an adequate diet for the patient.
D. Increase the client's saturated fat intake: Increasing saturated fats is not appropriate in cirrhosis, as it can worsen liver damage and contribute to further complications. A balanced, low-fat diet is recommended instead.
Correct Answer is B
Explanation
A. "I will give my baby the medication just before a feeding.": Nystatin should be given after feedings to ensure it stays in the mouth long enough to work effectively.
B. "I will swab the medication inside my baby's mouth and on her tongue.": Nystatin should be applied directly to the affected areas in the mouth (e.g., tongue, cheeks) using a swab or applicator.
C. "I will clean the white patches off my baby's mouth with a washcloth after giving the nystatin.": Cleaning the white patches could remove the medication before it has a chance to work, so this is not recommended.
D. "I will mix my baby's medication in a clear liquid and put it in her bottle.": Mixing the medication in a bottle can make it less effective, as it may not stay in the mouth long enough to treat the infection.
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