ATI LPN
Cardiovascular Exam Questions Questions
Question 1 of 5
Cardiac output is determined by the:
Correct Answer: C
Rationale: Cardiac output is calculated as the product of stroke volume and heart rate.
Question 2 of 5
A patient has recently started on digoxin (Lanoxin) in addition to furosemide (Lasix) and captopril for the management of heart failure. Which assessment finding by the home health nurse is a priority to communicate to the health care provider?
Correct Answer: C
Rationale: Hypokalemia can predispose the patient to life-threatening dysrhythmias (e.g., premature ventricular contractions) and potentiate the actions of digoxin. Hypokalemia also increases the risk for digoxin toxicity, which can also cause life-threatening dysrhythmias. The other data indicate that the patient's heart failure requires more effective therapies, but they do not require nursing action as rapidly as the low serum potassium level.
Question 3 of 5
Which of the following supplies the apex of the heart?
Correct Answer: A
Rationale: The anterior interventricular artery (left anterior descending artery) supplies the apex of the heart.
Question 4 of 5
The core of valves is covered by:
Correct Answer: A
Rationale: The core of heart valves is covered by endocardium, the innermost layer lining the heart.
Question 5 of 5
When pheochromocytoma (tumor of the adrenal medulla) suddenly discharges a massive amount of epinephrine into the circulation, the patient's heart rate would be expected to:
Correct Answer: B
Rationale: Epinephrine directly increases heart rate via its chronotropic effect on the SA node.