ATI RN
Questions About the Cardiovascular System Questions
Question 1 of 5
The myocardium would be the thickest in the
Correct Answer: B
Rationale: The left ventricle (B) has the thickest myocardium to pump blood into the high-pressure systemic circuit.
Question 2 of 5
A client has been taking Viagra and is now experiencing angina. The physician has prescribed nitroglycerin p.r.n. for the angina. Which of the following should the nurse include in the discharge instructions?
Correct Answer: A
Rationale: Viagra and nitroglycerin (A) together cause severe hypotension; a 24-hour gap is required. Other options (B, C, D) are incorrect per manufacturer guidelines.
Question 3 of 5
Sinus arrhythmia
Correct Answer: D
Rationale: Sinus arrhythmia (D) is a normal variation where heart rate increases on inspiration (due to vagal inhibition) and decreases on expiration (vagal tone), common in dogs.
Question 4 of 5
Which of the following organs is not essential for life?
Correct Answer: D
Rationale: The spleen, while important for immune function and blood filtering, is not essential for life; people can survive without it (e.g., after splenectomy). The liver, pancreas, and heart are vital for metabolism, digestion, and circulation.
Question 5 of 5
The nurse can best assess the degree of edema in an extremity by?
Correct Answer: B
Rationale: Checking for pitting (indentation after pressure) directly assesses edema severity in an extremity, indicating fluid retention extent. Weighing tracks overall fluid, measuring sizes is less specific, and I/O is indirect.