ATI RN
Cardiovascular System Questions Questions
Question 1 of 5
Which of the following statements is false?
Correct Answer: C
Rationale: Platelets (C) are fragments, not whole cells; others are true.
Question 2 of 5
Which chamber initially receives blood from the systemic circuit?
Correct Answer: C
Rationale: The right atrium (C) receives deoxygenated blood from the systemic circuit via the vena cava.
Question 3 of 5
In a healthy young adult, what happens to cardiac output when heart rate increases above 160 bpm?
Correct Answer: B
Rationale: Above ~160 bpm, diastolic filling time shortens, reducing stroke volume and cardiac output (B).
Question 4 of 5
The nurse should administer amiodarone (Cordarone) to treat which of the following arrhythmias?
Correct Answer: C
Rationale: Amiodarone (C) treats life-threatening ventricular tachycardia by prolonging the action potential. Others (A, B, D) involve slower rates, not its primary use.
Question 5 of 5
The nurse is caring for a client admitted with severe rectal bleeding who is receiving warfarin (Coumadin) therapy. Which of the following interventions should have priority in the plan of care?
Correct Answer: C
Rationale: A patent 18-gauge IV (C) is the priority for potential blood transfusion in severe bleeding. Other interventions (A, B, D) follow stabilization.