ATI RN
Cardiovascular System Practice Exam
1. What is the condition where the lung collapses due to air leaking into the space between the lung and chest wall?
- A. Pneumothorax
- B. Pleural effusion
- C. Pulmonary fibrosis
- D. Lung cancer
Correct answer: A
Rationale: Pneumothorax is the correct answer. It is the collapse of a lung due to air leaking into the space between the lung and chest wall. This condition often requires emergency treatment. Choice B, Pleural effusion, is the buildup of excess fluid between the layers of the pleura outside the lung, not air. Choice C, Pulmonary fibrosis, is a lung disease characterized by scarring and thickening of lung tissue, not related to lung collapse. Choice D, Lung cancer, is the uncontrolled growth of abnormal cells in the lung, not directly causing lung collapse.
2. What condition is characterized by the inflammation of the pleura, causing sharp chest pain that worsens with breathing?
- A. Pleurisy
- B. Pericarditis
- C. Endocarditis
- D. Myocarditis
Correct answer: A
Rationale: The correct answer is Pleurisy. Pleurisy is the inflammation of the pleura, the lining surrounding the lungs, which causes sharp chest pain that worsens with breathing. Pericarditis (choice B) is the inflammation of the pericardium, the sac around the heart, which typically causes chest pain that worsens when lying down. Endocarditis (choice C) is the inflammation of the inner lining of the heart chambers and valves, leading to symptoms like fever, fatigue, and abnormal heart sounds. Myocarditis (choice D) is inflammation of the heart muscle, which can cause symptoms such as chest pain, fatigue, and shortness of breath.
3. Which chronic condition is characterized by abnormally thickened heart muscle, making it harder for the heart to pump blood efficiently?
- A. Hypertrophic cardiomyopathy
- B. Dilated cardiomyopathy
- C. Restrictive cardiomyopathy
- D. Ventricular hypertrophy
Correct answer: A
Rationale: Hypertrophic cardiomyopathy is the correct answer. In this condition, the heart muscle becomes abnormally thickened, leading to difficulties in pumping blood efficiently. Dilated cardiomyopathy (choice B) involves the enlargement of the heart chambers, not thickening of the heart muscle. Restrictive cardiomyopathy (choice C) is characterized by stiffening of the heart muscle, impairing its ability to fill properly. Ventricular hypertrophy (choice D) refers to the thickening of the heart's ventricle walls, which can result from various conditions, not solely hypertrophic cardiomyopathy.
4. Which procedure is used to remove excess fluid or air from the pleural space, helping to relieve pressure on the lungs?
- A. Thoracentesis
- B. Bronchoscopy
- C. Chest X-ray
- D. Arterial blood gas (ABG)
Correct answer: A
Rationale: The correct answer is Thoracentesis. Thoracentesis is a procedure specifically designed to remove excess fluid or air from the pleural space in the chest. This process helps to relieve pressure on the lungs and improve breathing. Bronchoscopy (Choice B) is a procedure used to visualize the airways and diagnose lung conditions, not to remove fluid from the pleural space. Chest X-ray (Choice C) is an imaging test that provides a picture of the structures inside the chest, including the lungs, heart, and bones. Arterial blood gas (ABG) test (Choice D) is a blood test that measures the levels of oxygen and carbon dioxide in the blood, providing information about how well the lungs are working, but it does not involve removing excess fluid or air from the pleural space.
5. 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.
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