ATI RN
Cardiovascular System Practice Exam
1. What is a chronic inflammatory disease that affects the small airways in the lungs, leading to episodes of wheezing, breathlessness, and coughing?
- A. Asthma
- B. COPD
- C. Bronchitis
- D. Lung cancer
Correct answer: A
Rationale: Asthma is the correct answer. It is a chronic inflammatory disease that affects the small airways in the lungs, leading to symptoms like wheezing, breathlessness, and coughing. Asthma is commonly triggered by allergens, exercise, respiratory infections, and other factors. Choice B, COPD (Chronic Obstructive Pulmonary Disease), is characterized by airflow limitation and is often caused by smoking. Choice C, Bronchitis, is an inflammation of the bronchial tubes and can be acute or chronic. Choice D, Lung cancer, is a disease characterized by uncontrolled cell growth in lung tissues and is commonly associated with smoking or environmental factors.
2. A client on spironolactone (Aldactone) has a potassium level of 6.0 mEq/L. What is the nurse’s priority action?
- A. Hold the spironolactone and notify the healthcare provider.
- B. Administer a potassium supplement.
- C. Continue the spironolactone as ordered.
- D. Increase the dose of spironolactone.
Correct answer: A
Rationale: The correct action for a client on spironolactone with a potassium level of 6.0 mEq/L is to hold the medication and notify the healthcare provider. Spironolactone is a potassium-sparing diuretic that can further elevate potassium levels, which are already high. Administering a potassium supplement (Choice B) would exacerbate the hyperkalemia. Continuing the spironolactone as ordered (Choice C) could lead to worsening hyperkalemia. Increasing the dose of spironolactone (Choice D) would be contraindicated in the presence of elevated potassium levels.
3. The client is on enoxaparin (Lovenox) for DVT prophylaxis. What is the most important lab value to monitor?
- A. Platelet count
- B. PT/INR
- C. aPTT
- D. Hemoglobin
Correct answer: A
Rationale: The correct answer is A: Platelet count. When a client is on enoxaparin (Lovenox), monitoring the platelet count is crucial as enoxaparin can lead to a rare but serious side effect known as heparin-induced thrombocytopenia (HIT), causing a decrease in platelet count. Monitoring the platelet count helps detect this adverse reaction early. Choices B, C, and D are incorrect because enoxaparin therapy does not directly affect PT/INR, aPTT, or hemoglobin levels.
4. When monitoring a client on dobutamine, what is the most important parameter to assess?
- A. Blood pressure
- B. Heart rate
- C. Oxygen saturation
- D. Respiratory rate
Correct answer: A
Rationale: The correct answer is A: Blood pressure. When a client is on dobutamine, it is crucial to closely monitor their blood pressure as dobutamine can cause significant changes in blood pressure. While heart rate is also important to monitor during this time, blood pressure is the most critical parameter to assess. Oxygen saturation and respiratory rate are also important parameters to monitor in a patient receiving dobutamine, but they are not as crucial as blood pressure in this scenario.
5. What type of heart disease is characterized by the heart muscle becoming enlarged and weakened, reducing its ability to pump blood effectively?
- A. Dilated cardiomyopathy
- B. Hypertrophic cardiomyopathy
- C. Restrictive cardiomyopathy
- D. Myocarditis
Correct answer: A
Rationale: The correct answer is A: Dilated cardiomyopathy. Dilated cardiomyopathy is a type of heart disease where the heart muscle becomes enlarged and weakened, reducing its ability to pump blood effectively, which can lead to heart failure. Hypertrophic cardiomyopathy (B) is characterized by abnormal thickening of the heart muscle, not enlargement. Restrictive cardiomyopathy (C) involves the heart muscle becoming stiff and less flexible, limiting its ability to fill with blood properly. Myocarditis (D) is inflammation of the heart muscle, which can affect the heart's function but is different from dilated cardiomyopathy.
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