ATI LPN
Cardiovascular Questions and Answers PDF Questions
Question 1 of 5
Which of the following is unable to protect the cell against free radical damage?
Correct Answer: B
Rationale: Xanthine oxidase generates free radicals, unlike the others which neutralize them.
Question 2 of 5
Which one of the following is correct regarding alpha-adrenergic blockers?
Correct Answer: B
Rationale: Alpha-blockers like tamsulosin treat benign prostatic hyperplasia by relaxing smooth muscle.
Question 3 of 5
Which of the following could cause reflex tachycardia and/or postural hypotension on initial administration?
Correct Answer: D
Rationale: Prazosin, an alpha-blocker, causes reflex tachycardia and postural hypotension.
Question 4 of 5
A 58-year-old man undergoes open-heart surgery for a triple coronary bypass graft. His surgery goes smoothly, but the next day he develops chest palpitation. Metoprolol is started to keep his supraventricular tachycardia from interfering with ventricular rhythm. Under which Singh-Vaughan Williams class of antiarrhythmic does metoprolol fall?
Correct Answer: D
Rationale: Metoprolol, a beta-blocker, is a Class II antiarrhythmic.
Question 5 of 5
An increase in end diastolic volume would have which effect on cardiac output?
Correct Answer: A
Rationale: An increase in end diastolic volume stretches the cardiac muscle fibers, increasing stroke volume and thus cardiac output according to the Frank-Starling mechanism.