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Cardiovascular System Exam Questions Pdf

1. This is a more accurate indicator of tissue perfusion. It represents the cardiac output in terms of liters per minute per square meter of body surface area. Its normal range is 2.4-4 L/min.

Correct answer: A

Rationale: The correct answer is A: Cardiac Index. Cardiac Index is a measure of cardiac output relative to body surface area, providing a more accurate assessment of tissue perfusion. It is calculated by dividing the cardiac output by the body surface area. The normal range for cardiac index is 2.4-4 L/min/m². Choice B, Stroke volume, refers to the amount of blood ejected by the heart in one contraction and is not adjusted for body surface area. Choice C, Ejection fraction, is the percentage of blood pumped out of the heart's ventricles with each contraction, not adjusted for body surface area. Choice D, Cardiac output, is the total volume of blood pumped by the heart per minute, without considering body surface area.

2. The nurse is caring for a client on digoxin. What is the most important assessment before administering this medication?

Correct answer: A

Rationale: The correct answer is to check the client’s heart rate before administering digoxin because one of the side effects of digoxin is bradycardia. Monitoring the heart rate is crucial to assess whether the client's heart rate is within the acceptable range before giving the medication. Checking the blood pressure (Choice B), respiratory rate (Choice C), or oxygen saturation (Choice D) are important assessments in general patient care, but they are not specifically related to the administration of digoxin.

3. The client is on furosemide (Lasix) and has a potassium level of 2.9 mEq/L. What is the nurse’s priority action?

Correct answer: A

Rationale: The correct answer is A: Administer potassium supplements. A potassium level of 2.9 mEq/L indicates hypokalemia (low potassium levels). Furosemide (Lasix) is a loop diuretic that can cause potassium loss. Therefore, the priority action is to administer potassium supplements to correct the imbalance. Option B is incorrect because holding the furosemide without addressing the low potassium level could further worsen the imbalance. Option C is incorrect as continuing the current dose of furosemide without addressing the low potassium level could lead to complications. Option D is incorrect because decreasing the dose of furosemide does not directly address the low potassium level that needs immediate correction.

4. This medication type is used to relax and widen blood vessels, improving blood flow and reducing blood pressure.

Correct answer: A

Rationale: The correct answer is A: Vasodilator. Vasodilators are medications that work by relaxing and widening blood vessels, which improves blood flow and reduces blood pressure. They are commonly used in the treatment of heart conditions. Anticoagulants (choice B) are medications that prevent blood clot formation, diuretics (choice C) increase urine production to reduce fluid retention, and beta-blockers (choice D) reduce heart rate and workload on the heart. These mechanisms differ from the action of vasodilators.

5. What is a device that delivers a fine spray of medication into the airways?

Correct answer: A

Rationale: A nebulizer is a device that converts liquid medication into a fine mist, allowing it to be inhaled directly into the lungs. This makes it the correct answer to the question. Choice B, an inhaler, delivers medication in a different form - as a pressurized dose that needs to be inhaled. Choice C, an oxygen concentrator, is used to deliver oxygen to patients with breathing difficulties but does not deliver medication. Choice D, a peak flow meter, is used to measure how fast air can be blown out of the lungs and is not involved in delivering medication.

Similar Questions

What is the term for the amount of blood ejected by the left ventricle into the aorta per beat, determined by preload, contractility, and afterload?
What is a condition where the heart's mitral valve does not close properly, causing blood to leak backward into the left atrium?
The client on enoxaparin (Lovenox) is scheduled for surgery. What is the nurse’s priority action?
The nurse is caring for a client on amiodarone. What adverse effect is the nurse most concerned about?
What is a condition where the walls of the arteries become thickened and stiff, often due to the buildup of plaque, leading to reduced blood flow?
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