ATI LPN
Cardiovascular System Questions Questions
Question 1 of 5
Which of the following events occurs at the end of the period of ventricular ejection?
Correct Answer: D
Rationale: The end of ventricular ejection is marked by the closing of the semilunar valves (aortic and pulmonary).
Question 2 of 5
The free radical nitric oxide is generated in cells by reaction catalyzed by:
Correct Answer: B
Rationale: Nitric oxide synthase (NOS) catalyzes the production of nitric oxide.
Question 3 of 5
A 50-year-old man with familial hyperlipidemia undergoes resection of an abdominal aneurysm. Signs of congestive heart failure develop shortly after surgery. Despite treatment, the patient becomes hypotensive and expires 2 days later. Autopsy reveals marked narrowing of coronary arteries, without thrombosis. Multiple foci of necrosis are found circumferentially around the inner walls of both ventricles. Which of the following is the most likely cause of congestive heart failure in this patient?
Correct Answer: D
Rationale: Subendocardial infarction from severe coronary narrowing explains the CHF and necrosis pattern.
Question 4 of 5
Streptokinase is a bacterial protein produced by:
Correct Answer: B
Rationale: Streptokinase is produced by beta-hemolytic streptococci, particularly Streptococcus pyogenes.
Question 5 of 5
A 47-year-old male has recently diagnosed with hypertension due to pressure reading of 165/100 mm Hg. He has a well-controlled diabetes by oral hypoglycemic medications. Which of the following is the best choice to initiate the treatment of his hypertension?
Correct Answer: C
Rationale: Lisinopril, an ACE inhibitor, is ideal for hypertension in diabetics due to renal protection.