ATI LPN
Cardiovascular System Questions Questions
Question 1 of 5
An increase in contractility is determined on a Frank-Starling diagram by:
Correct Answer: B
Rationale: Increased contractility raises cardiac output for the same end-diastolic volume on a Frank-Starling curve.
Question 2 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 3 of 5
Streptokinase is a bacterial protein produced by:
Correct Answer: B
Rationale: Streptokinase is produced by beta-hemolytic streptococci, particularly Streptococcus pyogenes.
Question 4 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.
Question 5 of 5
A 78-year-old man with dyspnea is brought to the ER for evaluation. Physical examination reveals jugular venous distension and bilateral rales in both lung fields. Chest X-ray reveals pulmonary congestion consistent with fluid overload. What is the best treatment for this patient?
Correct Answer: C
Rationale: Furosemide, a loop diuretic, is best for acute pulmonary edema.