ATI LPN
100 Questions on the Cardiovascular System PDF Questions
Question 1 of 5
The most important purpose of the valves in the heart is to
Correct Answer: B
Rationale: Heart valves ensure unidirectional blood flow, preventing backflow and maintaining circulation efficiency.
Question 2 of 5
What finding in a patient on amiodarone requires immediate intervention?
Correct Answer: B
Rationale: Pulmonary toxicity is a severe adverse effect of amiodarone, indicated by respiratory symptoms requiring urgent evaluation.
Question 3 of 5
The human heart beats faster when you exercise.
Correct Answer: A
Rationale: Exercise increases heart rate to meet the body's higher demand for oxygen and nutrients.
Question 4 of 5
A 27 yo male patient presents with a female body habitus. Testicles are small. Absent secondary sex characteristics. Karyotype = 47 XXY. Which of the following is most likely to be seen with this clinical presentation?
Correct Answer: A
Rationale: This patient has Klinefelter syndrome (47,XXY), characterized by hypogonadism due to testicular failure. This leads to elevated LH and FSH (hypergonadotropic hypogonadism) as the pituitary attempts to stimulate the underperforming testes, while testosterone is low. Prolactin and TSH are not typically affected.
Question 5 of 5
Miss Johnson is an asymptomatic 34 yo woman who presents for breast biopsy and EKG finds long QT interval >470 ms. Which describes the best treatment option?
Correct Answer: A
Rationale: For asymptomatic long QT syndrome with QT >470 ms, beta blockers are the first-line treatment to reduce risk of arrhythmias, with monitoring for symptoms.