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Cardiovascular System Exam Questions Pdf
1. 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.
2. The client is given an alpha agonist. What might it be used for?
- A. For hemostasis
- B. To dilate the arteries
- C. To dilate the veins
- D. To decrease afterload
Correct answer: A
Rationale: Alpha agonists are used for hemostasis to help control bleeding by constricting blood vessels, leading to decreased blood flow to the area. Choices B, C, and D are incorrect as alpha agonists do not typically dilate arteries, dilate veins, or decrease afterload.
3. The client is receiving digoxin and has a potassium level of 2.8 mEq/L. What is the nurse’s priority action?
- A. Hold the digoxin and notify the healthcare provider.
- B. Increase the dose of digoxin.
- C. Continue the current dose of digoxin.
- D. Administer potassium supplements.
Correct answer: A
Rationale: The correct answer is to hold the digoxin and notify the healthcare provider. A potassium level of 2.8 mEq/L indicates hypokalemia, which can increase the risk of digoxin toxicity. Holding the medication and informing the healthcare provider is crucial to prevent adverse effects. Choice B is incorrect because increasing the dose of digoxin would further raise the risk of toxicity. Choice C is incorrect as continuing the current dose could exacerbate the toxicity risk. Choice D is incorrect because administering potassium supplements alone is not sufficient to address the potential digoxin toxicity; the first step should be to hold the digoxin and seek further guidance.
4. What is the term that describes the inability of cardiac cells to respond to a new stimulus while they are still in contraction from a previous stimulus?
- A. Refractoriness
- B. Excitability
- C. Contractility
- D. Automaticity
Correct answer: A
Rationale: Refractoriness is the correct term to describe the inability of cardiac cells to respond to a new stimulus while they are still in contraction from a previous stimulus. This period is essential for the heart to complete its contraction and relaxation phases without interference. Excitability refers to the ability of cells to respond to stimuli, not the inability to respond. Contractility is the force of cardiac muscle contraction, and automaticity is the ability of cardiac cells to generate electrical impulses spontaneously, which are not relevant to the described scenario.
5. Which condition is characterized by a chronic cough that produces mucus, often caused by long-term exposure to irritants?
- A. Chronic bronchitis
- B. Tuberculosis
- C. Asthma
- D. Sinusitis
Correct answer: A
Rationale: Chronic bronchitis is the correct answer. It is characterized by a long-term cough with mucus production, often caused by smoking or prolonged exposure to irritants. Tuberculosis (choice B) is a bacterial infection that primarily affects the lungs but does not usually present with a chronic cough as the main symptom. Asthma (choice C) is a chronic respiratory condition characterized by inflammation and narrowing of the airways, leading to wheezing and shortness of breath, but it does not typically cause chronic mucus production. Sinusitis (choice D) is inflammation of the sinuses and presents with symptoms like facial pain, nasal congestion, and post-nasal drip, but not specifically a chronic cough with mucus production.
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