ATI RN
Cardiovascular System Exam Questions And Answers
1. 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.
2. Which of the following is a central vasoconstrictor and peripheral vasodilator?
- A. Parasympathetic nervous system
- B. Sympathetic nervous system
- C. Dopamine
- D. Epinephrine
Correct answer: D
Rationale: The correct answer is D, Epinephrine. Epinephrine acts as a central vasoconstrictor and peripheral vasodilator. It increases heart rate and blood flow to muscles, helping to prepare the body for a 'fight or flight' response. Parasympathetic nervous system (choice A) does not cause vasoconstriction but rather vasodilation. The sympathetic nervous system (choice B) is primarily responsible for the fight or flight response, causing vasoconstriction. Dopamine (choice C) primarily acts as a neurotransmitter and hormone, not directly causing central vasoconstriction and peripheral vasodilation.
3. Which type of medication helps to reduce blood pressure by relaxing the blood vessels?
- A. Calcium channel blocker
- B. ACE inhibitor
- C. Beta-blocker
- D. Diuretic
Correct answer: A
Rationale: The correct answer is A, Calcium channel blocker. Calcium channel blockers work by relaxing the blood vessels, making it easier for the heart to pump blood and reducing blood pressure. Choice B, ACE inhibitor, reduces blood pressure by blocking the production of angiotensin II, a substance that narrows blood vessels. Choice C, Beta-blocker, reduces heart rate and the heart's workload, not directly relaxing blood vessels. Choice D, Diuretic, reduces blood pressure by increasing urine output, reducing the volume of fluid in the blood vessels, rather than directly relaxing them.
4. What is a condition where the lungs become stiff and scarred, making it difficult to breathe and get enough oxygen into the bloodstream?
- A. Pulmonary fibrosis
- B. Pulmonary edema
- C. Pulmonary embolism
- D. Pulmonary hypertension
Correct answer: A
Rationale: Pulmonary fibrosis is a condition characterized by the stiffening and scarring of the lungs, leading to difficulty breathing and impairing the transfer of oxygen into the bloodstream. Pulmonary edema refers to fluid accumulation in the lungs, causing breathing difficulties due to fluid filling the air sacs. Pulmonary embolism is a blockage in one of the pulmonary arteries in the lungs, often caused by a blood clot. Pulmonary hypertension is high blood pressure in the arteries of the lungs, which can lead to strain on the heart and affect oxygen levels in the blood.
5. What procedure uses a catheter to open up a blocked or narrowed coronary artery, often involving the placement of a stent?
- A. Angioplasty
- B. Echocardiogram
- C. CT angiography
- D. Coronary artery bypass graft (CABG)
Correct answer: A
Rationale: The correct answer is Angioplasty. Angioplasty is a procedure that uses a catheter to open up a blocked or narrowed coronary artery, often involving the placement of a stent. Echocardiogram is a diagnostic test that uses sound waves to create images of the heart. CT angiography is a type of imaging test that looks at blood vessels, but it does not involve the placement of a stent. Coronary artery bypass graft (CABG) is a surgical procedure to improve blood flow to the heart muscle by bypassing blocked coronary arteries.
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