ATI LPN
100 Questions on the Cardiovascular System Questions
Question 1 of 5
The chamber of the heart that normally has the thickest wall is the:
Correct Answer: D
Rationale: The left ventricle has the thickest wall to pump blood into the systemic circulation.
Question 2 of 5
During the cardiac cycle, the second heart sound is heard during:
Correct Answer: B
Rationale: The second heart sound occurs during ventricular relaxation when the semilunar valves close.
Question 3 of 5
Peripheral resistance to blood flow comes about because of:
Correct Answer: A
Rationale: Peripheral resistance arises primarily from friction between blood and vessel walls, especially in arterioles, where resistance is highest due to their small diameter.
Question 4 of 5
A patient who has just been admitted with pulmonary edema is scheduled to receive the following medications. Which medication should the nurse question before giving?
Correct Answer: D
Rationale: Although carvedilol is appropriate for the treatment of chronic heart failure, it is not used for patients with acute decompensated heart failure (ADHF) because of the risk of worsening the heart failure. The other drugs are appropriate for the patient with ADHF.
Question 5 of 5
What is meant by the concept 'venous return mechanism'?
Correct Answer: A
Rationale: Venous return refers to blood movement back to the heart, facilitated by muscular activity and vessel mechanisms.