ATI LPN
Cardiovascular Nursing Questions Questions
Question 1 of 5
The second heart sound(dupp) closely follows which of the events listed below?
Correct Answer: D
Rationale: The second heart sound ('dupp') corresponds to the closure of the semilunar valves at the end of ventricular systole, preventing backflow of blood from the arteries into the ventricles.
Question 2 of 5
The right atrioventricular valve is also called the:
Correct Answer: B
Rationale: The tricuspid valve is the right AV valve, between the right atrium and ventricle.
Question 3 of 5
Respectively, the right and left atrioventricular valves are also known as:
Correct Answer: A
Rationale: The right atrioventricular valve is the tricuspid valve, and the left atrioventricular valve is the mitral valve.
Question 4 of 5
Which of the following factors increases heart rate?
Correct Answer: C
Rationale: Anxiety and fear stimulate the sympathetic nervous system, increasing heart rate.
Question 5 of 5
If the blood in the subclavian vein of the chest had a pressure of 25 mm Hg and the pressure of the superior vena cava that drains the subclavian had a pressure of 15 mm Hg, the right atrium would have a pressure of:
Correct Answer: C
Rationale: Blood flows from higher to lower pressure. The subclavian vein (25 mm Hg) drains into the superior vena cava (15 mm Hg), which then enters the right atrium. Thus, the right atrial pressure must be less than 15 mm Hg to allow flow, typically around 0-8 mm Hg.