ATI LPN
Cardiovascular Assessment Nursing Questions Questions
Question 1 of 5
Which of the following would lead to a decreased heart rate?
Correct Answer: C
Rationale: Elevated plasma potassium levels can hyperpolarize cardiac cells, reducing excitability and thereby decreasing heart rate.
Question 2 of 5
The valve that guards the left atrioventricular orifice is called the:
Correct Answer: D
Rationale: The left AV valve is called both bicuspid and mitral.
Question 3 of 5
The first structure that blood leaving the right ventricle passes through is the:
Correct Answer: B
Rationale: Blood leaving the right ventricle passes through the pulmonary semilunar valve before entering the pulmonary artery.
Question 4 of 5
The ECG deflection produced during repolarization of the atria and depolarization of the ventricles is the:
Correct Answer: B
Rationale: The RS complex represents ventricular depolarization, which overlaps atrial repolarization.
Question 5 of 5
The effect of what substance is to decrease total blood volume?
Correct Answer: B
Rationale: Atrial natriuretic hormone (ANH) decreases blood volume by promoting sodium and water excretion in the kidneys. ADH and aldosterone increase blood volume by retaining water and sodium, respectively.