A client with congestive heart failure is prescribed a beta-blocker. The nurse should closely monitor the client for which potential adverse effect of this medication?

A) This choice is incorrect because bradycardia (slow heart rate) is not a common adverse effect of furosemide, a loop diuretic.

B) This choice is incorrect because hyperglycemia (high blood glucose levels) is not a common adverse effect of furosemide. In fact, furosemide can sometimes cause transient hypoglycemia.

C) This choice is correct. Hypotension (low blood pressure) is a potential adverse effect of furosemide due to its diuretic action. Furosemide causes the excretion of excess fluid, leading to a decrease in blood volume, which can result in hypotension.

D) This choice is incorrect because a dry, nonproductive cough is associated with ACE inhibitors, not furosemide.

A) This choice is incorrect because orthopnea is a different symptom where the client experiences difficulty breathing while lying flat and finds relief by sitting upright or standing.

B) This choice is correct. Paroxysmal nocturnal dyspnea is characterized by sudden breathlessness that awakens the client from sleep, usually 1-2 hours after falling asleep. The client may feel the need to sit upright or dangle the legs to breathe comfortably.

C) This choice is incorrect because peripheral edema refers to swelling in the legs, ankles, and feet, which is a common symptom of congestive heart failure but does not match the client's reported symptom.

D) This choice is incorrect because tachypnea is rapid breathing and is not specifically related to the client's nighttime symptom of sudden breathlessness.