ATI LPN
Cardiovascular System Questions Questions
Question 1 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 2 of 5
Streptokinase is a bacterial protein produced by:
Correct Answer: B
Rationale: Streptokinase is produced by beta-hemolytic streptococci, particularly Streptococcus pyogenes.
Question 3 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 4 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.
Question 5 of 5
The parasympathetic nervous system decreases heart rate by____
Correct Answer: D
Rationale: Parasympathetic stimulation opens potassium channels, leading to hyperpolarization of pacemaker cells and a slower heart rate.