When caring for a patient who has been admitted for his heart failure, the nurse observes that the patient is experiencing bradycardia. Which drug should be administered to patients who develop bradycardia?
Atropine
Cholestyramine
Inamrinone
Milrinone
The Correct Answer is A
A. Atropine is an anticholinergic medication that increases heart rate by blocking vagal effects on the heart, making it the first-line treatment for symptomatic bradycardia.
B. Cholestyramine is a bile acid sequestrant used to lower cholesterol levels and does not have any effects on heart rate.
C. Inamrinone is a phosphodiesterase inhibitor used in heart failure for inotropic support but is not specifically indicated for bradycardia management.
D. Milrinone is also a phosphodiesterase inhibitor used for heart failure but does not address bradycardia directly.
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Correct Answer is B
Explanation
A. Increasing fluid intake may not alleviate the cramping and diarrhea, which are common side effects of magnesium citrate.
B. Abdominal cramping and diarrhea are expected side effects of magnesium citrate, and the patient can continue the medication unless symptoms become severe.
C. Discontinuing the medication should not be recommended unless the side effects are intolerable or the patient experiences severe reactions.
D. Switching to a different type of laxative is unnecessary unless the patient has contraindications to magnesium citrate or develops severe side effects.
Correct Answer is C
Explanation
A. Metformin does not stimulate the pancreas to produce more insulin; that action is characteristic of sulfonylureas.
B. Metformin does not increase the absorption of glucose in the intestines; rather, it works by reducing the amount of glucose released into the bloodstream.
C. Metformin primarily decreases glucose production in the liver and improves insulin sensitivity in peripheral tissues, which helps lower blood sugar levels. This makes it effective for managing type 2 diabetes.
D. While metformin can have effects on fat metabolism, its primary action is not to decrease fat breakdown but to manage blood glucose levels.