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Jim is being treated for hypertension. Because he has a history of heart attack, the drug chosen is atenolol. Beta blockers treat hypertension by:
- A. Increasing heart rate to improve cardiac output
- B. Reducing vascular smooth muscle tone
- C. Increasing aldosterone-mediated volume activity
- D. Reducing aqueous humor production
Correct Answer: B
Rationale: Beta blockers like atenolol reduce vascular tone and heart rate, lowering blood pressure.
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The first-line treatment for cough related to an upper respiratory tract infection (URI) in a 5-year-old child is:
- A. Fluids and symptomatic care
- B. Dextromethorphan and guaifenesin syrup (Robitussin DM for Kids)
- C. Guaifenesin and codeine syrup (Tussin AC)
- D. Chlorpheniramine and dextromethorphan syrup (Nyquil for Kids)
Correct Answer: A
Rationale: Fluids and symptomatic care are safest and recommended for URI cough in young children; cough suppressants are discouraged under 6.
A nurse is providing discharge instructions for a client who has a new prescription for an antihypertensive medication. Which of the following statements should the nurse give?
- A. Be sure to limit your potassium intake while taking the medication.
- B. You should check your blood pressure every 8 hours while taking this medication.
- C. Your medication dosage will be increased if you develop tachycardia.
- D. Change positions slowly when you move from sitting to standing.
Correct Answer: D
Rationale: Antihypertensives can cause orthostatic hypotension; changing positions slowly prevents dizziness or falls.
The nurse is teaching a patient about rifampin. Which statement by the patient indicates understanding of the teaching?
- A. I should not wear soft contact lenses while taking rifampin
- B. I will need regular eye examinations while taking this drug
- C. I will report orange urine to my provider immediately
- D. I understand that renal toxicity is a common adverse effect
Correct Answer: A
Rationale: Rifampin stains fluids red-orange, risking soft lens damage; eye exams are for ethambutol, and urine color is benign. Patients taking rifampin should be warned that urine, feces, saliva, sputum, sweat, and tears may turn a harmless red-orange color.
Glucocorticoids causes:
- A. Protein catabolism and muscle atrophy
- B. Protein anabolism and increase of muscle mass
- C. Stimulation of growth in children
- D. Decrease of \mathrm{Na}+ reabsorbtion and \mathrm{K}+\mathrm{K}+ excretion
Correct Answer: A
Rationale: Glucocorticoids cause protein catabolism and muscle atrophy by breaking down proteins.
Which of the following is a biguanides which is used for the treatment of diabetes mellitus type II:
- A. Repaglinide
- B. Glibenclamide
- C. Metformin
- D. Pioglitazone
Correct Answer: C
Rationale: Metformin is the primary biguanide used for type 2 diabetes, reducing hepatic glucose production and improving insulin sensitivity.