Nokea
For patients taking warfarin, INRs are best drawn:
- A. Monthly throughout therapy
- B. Three times a week throughout therapy
- C. Two hours after the last dose of warfarin to get an accurate peak level
- D. In the morning if the patient takes their warfarin at night
Correct Answer: D
Rationale: Morning INR aligns with evening warfarin dosing for consistent monitoring; monthly is typical later, not peak-driven .
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Which of the following is CORRECT about aspirin poisoning?
- A. Is rarely seen in cases of chronic use
- B. It does not affect body temperature
- C. It is treated by administration of intravenous sodium bicarbonate
- D. The earliest sign is hypoventilation
Correct Answer: C
Rationale: Sodium bicarbonate enhances aspirin excretion by alkalinizing urine.
The term 'chemical antagonism' means that:
- A. two drugs combine with one another to form an inactive compound
- B. two drugs combine with one another to form a more active compound
- C. two drugs combine with one another to form a more water soluble compound
- D. two drugs combine with one another to form a more fat soluble compound
Correct Answer: A
Rationale: Chemical antagonism involves a direct chemical interaction rendering the drug inactive, e.g., chelation.
A nurse is caring for a hospitalized client who is receiving IV heparin for a deep-vein thrombosis. The client begins vomiting blood. After the heparin has been stopped, which of the following medications should the nurse prepare to administer?
- A. Vitamin k1
- B. Atropine
- C. Protamine
- D. Calcium gluconate
Correct Answer: C
Rationale: Protamine reverses heparin's anticoagulant effect in bleeding emergencies.
Which of the following drugs should be avoided in a pregnant woman because of a risk of harming the fetus?
- A. Pravastatin
- B. Cholestyramine
- C. Gemfibrozil
- D. Niacin
Correct Answer: A
Rationale: Statins like pravastatin are contraindicated in pregnancy due to potential teratogenic effects.
The nurse is caring for a patient who had a severe, acute, previously unseen adverse effect of a drug in Phase III testing. The patient asks, After all the testing done on this drug, didnt they know this adverse effect could occur? What is the nurses best response? (Select all that apply.)
- A. Phase III testing involves wide-scale population testing, which can reveal rare adverse effects not seen in earlier phases.
- B. New adverse effects can lead to further study or withdrawal of the drug.
- C. Phase I testing on healthy volunteers ensures all adverse effects are identified before patient use.
- D. Even with extensive testing, some adverse effects may only appear after widespread use.
Correct Answer: C
Rationale: Phase III testing involves a large population, uncovering rare effects . Preclinical animal studies don't fully predict human responses (B is false). Phase I uses healthy volunteers, missing disease-specific effects (C is false). Rare effects emerge post-approval , potentially leading to further action .