What is the normal total delay of the cardiac impulse in the AV node and AV bundle system?

Questions 45

ATI LPN

ATI LPN Test Bank

Cardiovascular Assessment Nursing Questions Questions

Question 1 of 5

What is the normal total delay of the cardiac impulse in the AV node and AV bundle system?

Correct Answer: D

Rationale: The total delay in the AV node and bundle is about 0.13 seconds, allowing atrial contraction before ventricular.

Question 2 of 5

A patient presented to you in your clinic with chest pain and fatigue, after doing blood culture and taking a biopsy, the results indicate that the patient has myocarditis caused by gram-positive bacilli. Which of the following is the most common cause?

Correct Answer: D

Rationale: Corynebacterium diphtheriae, a gram-positive bacillus, is a common cause of myocarditis via toxin production.

Question 3 of 5

A 23-year-old woman develops a sudden onset of congestive heart failure. Her condition rapidly deteriorates and she died of heart failure. At autopsy, patchy interstitial infiltrates composed of mainly lymphocytes are found, some of which surround individual myocytes. What is the most likely cause of patient's heart failure?

Correct Answer: A

Rationale: Viral myocarditis, often lymphocytic, is a common cause of acute heart failure in young adults.

Question 4 of 5

Which one of the following is a risk factor of heart failure?

Correct Answer: B

Rationale: Uncontrolled hypertension is a major risk factor for heart failure.

Question 5 of 5

Which of the following drug can't be used for management of hypertension in pregnancy?

Correct Answer: B

Rationale: Ramipril, an ACE inhibitor, is contraindicated in pregnancy.

Access More Questions!

ATI LPN Basic


$89/ 30 days

ATI LPN Premium


$150/ 90 days

Similar Questions