ATI LPN
Cardiovascular Disease NCLEX Questions Questions
Question 1 of 5
Which of the following is a semilunar valve?
Correct Answer: A
Rationale: The aortic valve is a semilunar valve, preventing backflow from the aorta.
Question 2 of 5
The semilunar valves open during this part of the cardiac cycle.
Correct Answer: B
Rationale: Semilunar valves open during ventricular contraction, allowing blood to be ejected into the arteries.
Question 3 of 5
Which of the following is true of the conduction system of the heart?
Correct Answer: A
Rationale: The heart's conduction system (e.g., SA node, AV node) is composed of specialized cardiac muscle cells, not nervous tissue, and it generates beats autonomously without requiring external nervous stimuli.
Question 4 of 5
A patient with chronic heart failure who is taking a diuretic and an angiotensin-converting enzyme (ACE) inhibitor and who is on a low-sodium diet tells the home health nurse about a 5-lb weight gain in the past 3 days. The nurse's priority action will be to
Correct Answer: C
Rationale: The 5-lb weight gain over 3 days indicates that the patient's chronic heart failure may be worsening. It is important that the patient be assessed immediately for other clinical manifestations of decompensation, such as lung crackles. A dietary recall to detect hidden sodium in the diet, reinforcement of sodium restrictions, and assessment of medication compliance may be appropriate interventions but are not the first nursing actions indicated.
Question 5 of 5
At which of the following levels does the base of the heart lie?
Correct Answer: B
Rationale: The base of the heart lies at the level of the T5-T7 vertebrae, formed primarily by the atria, as it sits on the diaphragm.