ATI RN
Cardiovascular System Exam
1. What is a condition where the heart beats too slowly, reducing the amount of blood pumped to the body?
- A. Bradycardia
- B. Tachycardia
- C. Atrial fibrillation
- D. Ventricular fibrillation
Correct answer: A
Rationale: Bradycardia is the correct answer. It is a condition characterized by a slow heart rate, which reduces the amount of blood pumped to the body. This can lead to symptoms like fatigue and dizziness. Choice B, Tachycardia, is the opposite condition where the heart beats too fast. Choices C and D, Atrial fibrillation and Ventricular fibrillation, refer to irregular and potentially life-threatening rapid heart rhythms involving the atria and ventricles respectively, not a slow heart rate.
2. What is the condition where the blood vessels that supply blood to the legs and feet become narrowed or blocked, causing pain and difficulty walking?
- A. Peripheral artery disease
- B. Raynaud's disease
- C. Varicose veins
- D. Pulmonary embolism
Correct answer: A
Rationale: The correct answer is A, Peripheral artery disease (PAD). PAD is a condition where the blood vessels that supply blood to the legs and feet become narrowed or blocked, leading to decreased blood flow, pain, and difficulty walking, especially during physical activity. Raynaud's disease (choice B) is characterized by vasospasms in the fingers and toes, causing them to turn white or blue. Varicose veins (choice C) are enlarged, twisted veins usually found in the legs. Pulmonary embolism (choice D) is a blockage in one of the pulmonary arteries in the lungs, often caused by a blood clot.
3. 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.
4. The client is being taught about the use of warfarin. What is the most important dietary instruction?
- A. Avoid foods high in vitamin K.
- B. Increase the intake of vitamin K-rich foods.
- C. Avoid foods high in protein.
- D. Increase the intake of foods high in calcium.
Correct answer: A
Rationale: The correct answer is A: Avoid foods high in vitamin K. Warfarin is a medication that works by decreasing the activity of vitamin K in the body to prevent blood clotting. Therefore, consuming foods high in vitamin K like green leafy vegetables can interfere with the medication's effectiveness. Choices B, C, and D are incorrect. Increasing the intake of vitamin K-rich foods would counteract the effects of warfarin. Avoiding foods high in protein or increasing the intake of foods high in calcium are not specifically related to the use of warfarin.
5. Which of the following is a chronic respiratory disease characterized by the irreversible obstruction of airflow?
- A. Chronic obstructive pulmonary disease (COPD)
- B. Asthma
- C. Pulmonary edema
- D. Bronchiectasis
Correct answer: A
Rationale: The correct answer is A, Chronic obstructive pulmonary disease (COPD). COPD is a chronic respiratory disease where the airflow in the lungs becomes obstructed, making it difficult to breathe. Choice B, Asthma, is a different chronic respiratory condition characterized by reversible airflow obstruction and airway hyperresponsiveness. Choice C, Pulmonary edema, is a condition where fluid accumulates in the lungs, leading to difficulty in breathing but not irreversible airflow obstruction. Choice D, Bronchiectasis, is a condition characterized by abnormal widening of the bronchial tubes, leading to recurrent respiratory infections, but it is not specifically defined by irreversible airflow obstruction.
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