ATI RN
Cardiovascular System Exam Questions And Answers
1. The client on warfarin has an INR of 1.2. What is the nurse’s priority action?
- A. Increase the dose of warfarin
- B. Administer vitamin K
- C. Monitor for signs of bleeding
- D. Hold the next dose and notify the healthcare provider
Correct answer: A
Rationale: The correct answer is to increase the dose of warfarin. An INR of 1.2 is below the therapeutic range for a client on warfarin, indicating that the dose is subtherapeutic. The priority action in this situation is to adjust the dose to achieve the target therapeutic INR range (usually 2-3) to prevent thromboembolic events. Administering vitamin K is not necessary as the INR is low, and there are no signs of bleeding. Monitoring for signs of bleeding is important but not the priority in this case since the INR is subtherapeutic. Holding the next dose and notifying the healthcare provider would delay the intervention needed to adjust the dose and achieve the therapeutic range.
2. A nurse is providing teaching about food allergies to the parents of a toddler. Which of the following foods should the nurse identify as highest risk for allergies in toddlers?
- A. Eggs
- B. Milk
- C. Bananas
- D. Citrus fruits
Correct answer: A
Rationale: Eggs are one of the most common food allergens in toddlers and should be introduced carefully.
3. A nurse is reviewing a client's medication regimen. Which of the following medications places the client at increased risk for digoxin toxicity?
- A. Calcium channel blockers
- B. Potassium-sparing diuretics
- C. Beta blockers
- D. Loop diuretics
Correct answer: D
Rationale: The correct answer is D, Loop diuretics. Loop diuretics can lead to hypokalemia, which increases the risk for digoxin toxicity. Loop diuretics cause potassium loss, and hypokalemia can potentiate the toxic effects of digoxin. Choices A, B, and C are incorrect because calcium channel blockers, potassium-sparing diuretics, and beta blockers do not directly increase the risk of digoxin toxicity.
4. A nurse is assessing a client who has left-sided heart failure. Which of the following findings should the nurse expect?
- A. Peripheral edema.
- B. Cough with frothy sputum.
- C. Jugular vein distention.
- D. Dependent edema.
Correct answer: C
Rationale: The correct answer is C: Jugular vein distention. In left-sided heart failure, the left ventricle fails to efficiently pump blood to the body, causing increased pressure in the pulmonary circulation. This increased pressure can lead to symptoms like jugular vein distention, as blood backs up in the pulmonary circulation and causes congestion. Choices A, B, and D are incorrect: Peripheral edema is more commonly associated with right-sided heart failure, cough with frothy sputum is a sign of pulmonary edema which can occur in left-sided heart failure but is not as specific as jugular vein distention, and dependent edema is also more indicative of right-sided heart failure due to fluid retention and increased venous pressure in the systemic circulation.
5. What is required for effective hand washing?
- A. Soap or detergent to promote emulsification
- B. Hot water to destroy bacteria
- C. A disinfectant to increase surface tension
- D. All of the above
Correct answer: A
Rationale: To effectively wash hands, soap or detergent is essential as they help emulsify fats and oils, allowing them to be rinsed away. Hot water alone cannot effectively destroy bacteria, and a disinfectant is not typically required for routine hand washing.
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