ATI LPN
Cardiovascular Disease Questions Questions
Question 1 of 5
The left atrioventricular valve is also called:
Correct Answer: D
Rationale: The left AV valve is known as both the mitral and bicuspid valve.
Question 2 of 5
The first heart sound heard, or the 'lub' sound, is caused by the:
Correct Answer: A
Rationale: The first heart sound is caused by the closure of the AV valves during ventricular contraction.
Question 3 of 5
Which part of the heart conduction system is referred to as the pacemaker?
Correct Answer: B
Rationale: The sinoatrial (SA) node is known as the pacemaker because it initiates the electrical impulses that set the heart rate.
Question 4 of 5
A patient in the intensive care unit with acute decompensated heart failure (ADHF) complains of severe dyspnea and is anxious, tachypneic, and tachycardic. Several drugs have been ordered for the patient. The nurse's priority action will be to
Correct Answer: A
Rationale: Morphine improves alveolar gas exchange, improves cardiac output by reducing ventricular preload and afterload, decreases anxiety, and assists in reducing the subjective feeling of dyspnea. Diazepam may decrease patient anxiety, but it will not improve the cardiac output or gas exchange. Increasing the dopamine may improve cardiac output, but it will also increase the heart rate and myocardial oxygen consumption. Nitroglycerin will improve cardiac output and may be appropriate for this patient, but it will not directly reduce anxiety and will not act as quickly as morphine to decrease dyspnea.
Question 5 of 5
Which of the following does NOT open into the right atrium?
Correct Answer: C
Rationale: The pulmonary orifice connects the right ventricle to the pulmonary artery, not the right atrium, unlike the other structures listed.