ATI RN
Cardiovascular System Practice Exam
1. Which condition involves the enlargement and weakening of the left ventricle of the heart, leading to reduced pumping ability?
- A. Dilated cardiomyopathy
- B. Hypertrophic cardiomyopathy
- C. Restrictive cardiomyopathy
- D. Pericarditis
Correct answer: A
Rationale: The correct answer is A: Dilated cardiomyopathy. Dilated cardiomyopathy is characterized by the enlargement and weakening of the left ventricle of the heart, which results in a reduced ability to pump blood effectively. Choice B, Hypertrophic cardiomyopathy, involves thickening of the heart muscle, not enlargement. Choice C, Restrictive cardiomyopathy, is characterized by stiffening of the heart muscle, not enlargement. Choice D, Pericarditis, refers to inflammation of the pericardium, the lining surrounding the heart, and does not involve enlargement and weakening of the left ventricle.
2. The nurse is caring for a client on enalapril (Vasotec). What is the most important side effect to monitor?
- A. Cough
- B. Hyperkalemia
- C. Hypotension
- D. Dizziness
Correct answer: A
Rationale: The correct answer is A: Cough. Enalapril is an ACE inhibitor, and cough is a common side effect associated with this class of medication. Monitoring for cough is crucial as it can indicate the development of a potentially serious condition known as angioedema. Hyperkalemia (choice B) is a possible side effect of ACE inhibitors but is not the most important side effect to monitor. Hypotension (choice C) and dizziness (choice D) are also potential side effects of enalapril; however, cough takes precedence due to its association with angioedema, a severe adverse reaction.
3. Which condition involves the heart muscle becoming abnormally thickened, reducing its ability to pump blood?
- A. Hypertrophic cardiomyopathy
- B. Dilated cardiomyopathy
- C. Restrictive cardiomyopathy
- D. Ischemic cardiomyopathy
Correct answer: A
Rationale: The correct answer is A: Hypertrophic cardiomyopathy. In this condition, the heart muscle thickens, leading to a decreased ability to pump blood effectively. Choice B, Dilated cardiomyopathy, is characterized by the heart chambers enlarging and weakening. Choice C, Restrictive cardiomyopathy, involves the heart muscle becoming rigid and less compliant. Choice D, Ischemic cardiomyopathy, is when the heart muscle is weakened due to reduced blood flow.
4. What procedure involves inserting a needle into the pleural space to remove excess fluid and help the patient breathe more easily?
- A. Thoracentesis
- B. Bronchoscopy
- C. Spirometry
- D. Arterial blood gas (ABG)
Correct answer: A
Rationale: Thoracentesis is the correct answer. It is a procedure where a needle is inserted into the pleural space to remove excess fluid, aiding in easier breathing. Bronchoscopy (Choice B) is a procedure to visualize the airways and diagnose lung problems, not specifically for fluid drainage. Spirometry (Choice C) is a test to measure lung function, not a procedure for fluid removal. Arterial blood gas (ABG) (Choice D) is a blood test to assess oxygen and carbon dioxide levels in the blood, not a procedure for draining fluid from the pleural space.
5. A client on a beta blocker has a heart rate of 52 bpm. What is the nurse’s priority action?
- A. Hold the beta blocker and notify the healthcare provider.
- B. Administer the beta blocker as ordered.
- C. Increase the dose of the beta blocker.
- D. Continue to monitor the client and reassess in 30 minutes.
Correct answer: A
Rationale: The correct answer is to hold the beta blocker and notify the healthcare provider. A heart rate of 52 bpm is low, and beta blockers can further decrease the heart rate, potentially causing harm. Therefore, withholding the medication and promptly informing the healthcare provider is crucial for further assessment and possible adjustment of the treatment plan. Administering the beta blocker as ordered (Choice B) can exacerbate the bradycardia. Increasing the dose of the beta blocker (Choice C) would further suppress the heart rate. Continuing to monitor the client and reassessing in 30 minutes (Choice D) might delay necessary interventions and increase the risk of complications in a client with a heart rate of 52 bpm.
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