Nokea
Patient education regarding taking iron replacements includes:
- A. Doubling the dose if they miss a dose to maintain therapeutic levels
- B. Taking the iron with milk or crackers if it upsets their stomach
- C. Iron is best taken on an empty stomach with juice
- D. Antacids such as Tums may help the upset stomach caused by iron therapy
Correct Answer: C
Rationale: Iron absorption is best on an empty stomach with juice; milk or antacids reduce absorption, and doubling risks toxicity.
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The elderly are at high risk of ADRs due to:
- A. Having greater muscle mass than younger adults, leading to higher volume of distribution
- B. The extensive studies that have been conducted on drug safety in this age group
- C. The blood-brain barrier being less permeable, requiring higher doses to achieve therapeutic effect
- D. Age-related decrease in renal function
Correct Answer: D
Rationale: Age-related renal decline slows drug clearance, raising ADR risk in the elderly, unlike muscle mass , studies , or BBB .
A newly developed medication for pulmonary hypertension targets blood vessels in the lungs, but does not affect blood vessels in the liver. Which of the following is most likely true of this medication?
- A. It is a ligand that is specific for lung and liver blood-vessel receptors. but which is metabolized rapidly in the liver
- B. It is a ligand that is specific for blood-vessel receptors in the lung but not in the liver
- C. It is a receptor that is upregulated when oxygen tension in the lungs is low
- D. It is a receptor that is only expressed on blood vessels in the lungs
Correct Answer: B
Rationale: The medication's specificity for lung blood vessels suggests it targets receptors unique to that tissue, not the liver.
A nurse is teaching a client who has Graves' disease about her prescribed medications. Which of the following statements by the client indicates an understanding of the use of Propranolol in the treatment of Graves' disease?
- A. Propranolol helps increase blood flow to my thyroid gland.
- B. Propranolol is used to prevent excess glucose in my blood.
- C. Propranolol will decrease my tremors and fast heart beat.
- D. Propranolol promotes a decrease of thyroid hormone in my body
Correct Answer: C
Rationale: Propranolol reduces tremors and tachycardia in Graves' disease by blocking beta-adrenergic effects.
The patient is taking a 2-mg dose of ropinerol XR. The drug has a half-life of 12 hours. How long will it be before only 0.25 mg of this drug remains in the patient's system?
- A. 24 hours
- B. 36 hours
- C. 48 hours
- D. 60 hours
Correct Answer: B
Rationale: The half-life of a drug is the time it takes for the amount of drug in the body to decrease to half of the peak level it previously achieved. At 12 hours there will be 1 mg of the drug available to the body. At 24 hours there will be 0.5 mg, at 36 hours there will be 0.25 mg, at 48 hours there will be 0.125 mg, and at 60 hours there will be 0.0625 mg.
A nurse is administering a Dopamine infusion at a low dose to a client who has severe heart failure. Which of the following findings is an expected effect of this medication?
- A. Lowered heart rate
- B. Increased myocardial contractility
- C. Decreased conduction through the AV node
- D. Vasoconstriction of renal blood vessel
Correct Answer: B
Rationale: Low-dose dopamine increases contractility via beta-adrenergic effects, improving cardiac output.