ATI LPN
Cardiovascular NCLEX Questions with Rationale Questions
Question 1 of 5
All the following are major branches of the aortic arch except the:
Correct Answer: A
Rationale: The coronary arteries branch from the ascending aorta, not the aortic arch.
Question 2 of 5
The Frank-Starling mechanism:
Correct Answer: C
Rationale: The Frank-Starling mechanism correlates the stretch of cardiac muscle fibers with the strength of contraction.
Question 3 of 5
IV sodium nitroprusside is ordered for a patient with acute pulmonary edema. During the first hours of administration, the nurse will need to titrate the nitroprusside rate down if the patient develops
Correct Answer: C
Rationale: Sodium nitroprusside is a potent vasodilator and the major adverse effect is severe hypotension. Coughing and bradycardia are not adverse effects of this medication. Nitroprusside does not cause increased ventricular ectopy.
Question 4 of 5
According to the Frank-Starling law, stroke volume increases as a function of:
Correct Answer: C
Rationale: Frank-Starling law states that the stroke volume of the heart increases in response to an increase in the volume of blood filling the heart (the end diastolic volume) when all other factors remain constant.
Question 5 of 5
Which of the following is NOT supplied by the Circle of Willis?
Correct Answer: A
Rationale: The Circle of Willis supplies the brain and parts of the eyes, but not the nose or pharynx, which have separate vascular supplies.