ATI RN
Cardiovascular System Practice Exam
1. The nurse is giving digoxin to a client. What is the most important parameter to check before administration?
- A. Heart rate
- B. Blood pressure
- C. Respiratory rate
- D. Oxygen saturation
Correct answer: A
Rationale: The correct answer is A: Heart rate. Before administering digoxin, it is crucial to check the client's heart rate because digoxin can cause bradycardia, an abnormally slow heart rate. Monitoring the heart rate is essential to prevent potential complications associated with digoxin therapy. Choices B, C, and D are less critical parameters to assess before administering digoxin. While blood pressure is also important to monitor during digoxin therapy, the most crucial parameter to check due to the medication's potential effect on heart rate is the heart rate itself.
2. What type of stroke is caused by a blockage in an artery supplying blood to the brain?
- A. Ischemic stroke
- B. Hemorrhagic stroke
- C. Transient ischemic attack
- D. Embolism
Correct answer: A
Rationale: The correct answer is A: Ischemic stroke. Ischemic stroke occurs when a blood clot blocks an artery supplying blood to the brain, leading to brain damage. Choice B, Hemorrhagic stroke, is caused by bleeding in the brain, not a blockage. Choice C, Transient ischemic attack, is a temporary blockage of blood flow to the brain with symptoms similar to a stroke but typically lasting only a few minutes. Choice D, Embolism, refers to a blood clot or other particle that travels through the bloodstream and blocks a blood vessel.
3. What is a condition where the alveoli are gradually destroyed, leading to shortness of breath and reduced oxygen exchange?
- A. Emphysema
- B. Pulmonary fibrosis
- C. Pulmonary edema
- D. Lung cancer
Correct answer: A
Rationale: The correct answer is A: Emphysema. Emphysema is a chronic lung condition where the alveoli (air sacs) in the lungs are damaged, reducing the surface area available for gas exchange. This destruction leads to symptoms like shortness of breath and reduced oxygen exchange. Choice B, pulmonary fibrosis, involves scarring and thickening of the lung tissue, not destruction of alveoli. Choice C, pulmonary edema, is the accumulation of fluid in the lungs, not destruction of alveoli. Choice D, lung cancer, is the uncontrolled growth of abnormal cells in the lungs, not destruction of alveoli.
4. What test measures the pressure in the arteries during the contraction and relaxation of the heart?
- A. Blood pressure test
- B. Electrocardiogram (ECG or EKG)
- C. Spirometry
- D. Pulse oximetry
Correct answer: A
Rationale: The correct answer is 'Blood pressure test.' This test measures the pressure in the arteries during the contraction (systolic) and relaxation (diastolic) phases of the heart, providing important information about heart health. Choice B, 'Electrocardiogram (ECG or EKG),' records the heart's electrical activity and is not specifically related to measuring arterial pressure. Choice C, 'Spirometry,' assesses lung function by measuring airflow. Choice D, 'Pulse oximetry,' measures oxygen saturation in the blood, not arterial pressure.
5. The healthcare provider is administering IV nitroglycerin to a patient for chest pain. What is the most critical parameter to monitor?
- A. Heart rate
- B. Blood pressure
- C. Oxygen saturation
- D. Respiratory rate
Correct answer: B
Rationale: The correct answer is 'Blood pressure.' Nitroglycerin is a vasodilator that can cause a rapid drop in blood pressure, leading to hypotension. Monitoring the blood pressure is crucial to prevent potential complications such as hypotension-induced dizziness, syncope, or organ hypoperfusion. While heart rate, oxygen saturation, and respiratory rate are important parameters to monitor in a clinical setting, the immediate concern with IV nitroglycerin administration is the risk of hypotension, making blood pressure the most critical parameter to assess.
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