ATI RN
Cardiovascular System Exam Questions
1. The nurse is caring for a client on heparin. What is the most important lab value to monitor?
- A. aPTT
- B. INR
- C. Platelet count
- D. Hemoglobin
Correct answer: A
Rationale: The correct answer is A: aPTT. When a client is on heparin therapy, monitoring the aPTT is crucial. The aPTT helps assess the effectiveness of heparin in preventing blood clots and guides dose adjustments as needed. INR (Choice B) is more commonly used to monitor warfarin therapy. Platelet count (Choice C) is important to assess for potential bleeding disorders or thrombocytopenia but is not the primary lab value to monitor for heparin therapy. Hemoglobin (Choice D) is essential for assessing oxygen-carrying capacity but is not the most important lab value to monitor when a client is on heparin.
2. What is a condition where the right side of the heart fails due to increased pressure in the pulmonary arteries, often caused by chronic lung disease?
- A. Cor pulmonale
- B. Heart failure
- C. Pulmonary embolism
- D. Myocarditis
Correct answer: A
Rationale: Cor pulmonale is the correct answer. It is a condition where the right side of the heart fails due to increased pressure in the pulmonary arteries, often caused by chronic lung disease such as COPD. Pulmonary embolism (choice C) is a blockage in one of the pulmonary arteries in your lungs. Myocarditis (choice D) is inflammation of the heart muscle. While heart failure (choice B) is a broad term that can involve the failure of either the right or left side of the heart.
3. What is a condition where the heart's valves do not function properly, leading to disrupted blood flow within the heart?
- A. Valvular heart disease
- B. Myocarditis
- C. Endocarditis
- D. Aneurysm
Correct answer: A
Rationale: Valvular heart disease is the correct answer. It occurs when the heart's valves malfunction, leading to disrupted blood flow within the heart. Myocarditis refers to inflammation of the heart muscle, not specifically related to valve function. Endocarditis is an infection of the inner lining of the heart chambers and valves, not necessarily caused by valve malfunction. Aneurysm is the abnormal bulging of a blood vessel, not directly related to heart valve function.
4. A client on an ACE inhibitor reports a persistent cough. What is the nurse’s best response?
- A. Reassure the client that the cough is a common side effect and is usually not serious.
- B. Instruct the client to report the cough to the healthcare provider as it may require discontinuation of the medication.
- C. Advise the client to use a humidifier at night to relieve the cough.
- D. Suggest the client take an over-the-counter cough suppressant.
Correct answer: B
Rationale: The correct answer is B. A persistent cough in a client on an ACE inhibitor may indicate a serious side effect that requires discontinuation of the medication. Instructing the client to report the cough to the healthcare provider is essential for proper evaluation and management. Choice A is incorrect because simply reassuring the client may delay necessary action. Choice C is incorrect as using a humidifier may not address the underlying cause of the cough. Choice D is incorrect because taking a cough suppressant without healthcare provider guidance may mask symptoms without addressing the cause.
5. The nurse is administering a beta blocker to a client with a heart rate of 58 bpm. What is the nurse’s priority action?
- A. Administer the beta blocker as ordered.
- B. Hold the beta blocker and notify the healthcare provider.
- C. Increase the dose of the beta blocker.
- D. Monitor the client’s heart rate and reassess in 30 minutes.
Correct answer: B
Rationale: The correct answer is B. A heart rate of 58 bpm is considered low, and beta blockers can further decrease the heart rate. Therefore, the nurse's priority action should be to hold the beta blocker and notify the healthcare provider for further assessment. Choice A is incorrect because administering the beta blocker without considering the low heart rate can worsen the condition. Choice C is incorrect as increasing the dose of the beta blocker can lead to further slowing of the heart rate, which is not safe in this situation. Choice D is not the priority action; holding the medication and seeking guidance from the healthcare provider is more crucial.
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