ATI RN
Cardiovascular System Practice Exam
1. The nurse is giving digoxin to a client. What is the most important parameter to check before administration?
- A. Heart rate
- B. Blood pressure
- C. Respiratory rate
- D. Oxygen saturation
Correct answer: A
Rationale: The correct answer is A: Heart rate. Before administering digoxin, it is crucial to check the client's heart rate because digoxin can cause bradycardia, an abnormally slow heart rate. Monitoring the heart rate is essential to prevent potential complications associated with digoxin therapy. Choices B, C, and D are less critical parameters to assess before administering digoxin. While blood pressure is also important to monitor during digoxin therapy, the most crucial parameter to check due to the medication's potential effect on heart rate is the heart rate itself.
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. The client on enoxaparin (Lovenox) is scheduled for surgery. What is the nurse’s priority action?
- A. Hold the enoxaparin and notify the healthcare provider.
- B. Administer the enoxaparin as scheduled.
- C. Administer vitamin K before the surgery.
- D. Monitor the client’s INR and proceed with surgery.
Correct answer: A
Rationale: The correct answer is A: Hold the enoxaparin and notify the healthcare provider. Enoxaparin, being an anticoagulant, should be held before surgery to reduce the risk of excessive bleeding during the procedure. It is crucial to inform the healthcare provider to determine the appropriate management plan. Choice B is incorrect because administering enoxaparin before surgery can increase the risk of bleeding. Choice C is incorrect as vitamin K administration is not typically indicated in this situation. Choice D is incorrect because monitoring the client's INR and proceeding with surgery without addressing the enoxaparin can lead to significant bleeding complications.
4. What procedure uses a catheter to open blocked coronary arteries and improve blood flow to the heart muscle?
- A. Angioplasty
- B. Stent placement
- C. Coronary artery bypass graft (CABG)
- D. Valve replacement
Correct answer: A
Rationale: The correct answer is A, Angioplasty. Angioplasty is a procedure where a catheter is used to open blocked coronary arteries and may involve the insertion of a stent to improve blood flow to the heart muscle. Stent placement (B) is a related procedure but specifically refers to the insertion of a stent. Coronary artery bypass graft (CABG) (C) is a surgical procedure that uses blood vessels to bypass blocked coronary arteries. Valve replacement (D) is a different procedure that involves replacing a heart valve, not opening blocked coronary arteries.
5. What is a condition where the blood flow to the brain is temporarily blocked, often referred to as a mini-stroke?
- A. Transient ischemic attack (TIA)
- B. Stroke
- C. Aneurysm
- D. Myocardial infarction
Correct answer: A
Rationale: A transient ischemic attack (TIA) is the correct answer. A TIA is often referred to as a mini-stroke because it is caused by a temporary blockage of blood flow to the brain. This blockage resolves on its own, typically within minutes to hours, leading to temporary symptoms similar to a stroke. Option B, 'Stroke,' is incorrect because a stroke involves a more prolonged interruption of blood flow to the brain. Option C, 'Aneurysm,' is incorrect as it is a bulge in a blood vessel that can rupture and cause bleeding, not a temporary blockage of blood flow. Option D, 'Myocardial infarction,' is also incorrect as it refers to a heart attack, not a condition involving the brain's blood flow.
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