A nurse is planning care for a client who is taking hydrochlorothiazide for hypertension. The nurse should plan to monitor and report which of the following findings as an adverse effect of this medication?

Nursing management of clients taking Hydrochlorothiazide involves monitoring for electrolyte imbalances and signs of excessive fluid loss. Hydrochlorothiazide is a thiazide diuretic commonly used to treat hypertension by promoting sodium and water excretion through the kidneys. Along with fluid loss, it can also increase the excretion of potassium, leading to hypokalemia. Recognizing manifestations such as muscle weakness, fatigue, and cardiac changes is essential for preventing serious complications. Rationale: A. Urinary retention is not a common adverse effect of hydrochlorothiazide because this medication increases urine production rather than decreasing it. Clients typically experience increased urinary frequency, especially when therapy is initiated. Retention would be more concerning with anticholinergic medications or obstructive urinary conditions rather than thiazide diuretics. B. Hypoglycemia is not expected with hydrochlorothiazide; instead, thiazide diuretics may cause hyperglycemia by reducing insulin release and altering glucose metabolism. This is especially important in clients with diabetes mellitus or prediabetes. Blood glucose monitoring is often necessary because elevated rather than decreased glucose levels may occur. C. Peripheral edema is not usually an adverse effect because hydrochlorothiazide is prescribed to reduce fluid volume and help decrease edema and blood pressure. Persistent or worsening edema may suggest heart failure progression, renal issues, or ineffective therapy rather than a medication side effect. The medication is intended to relieve, not cause, fluid accumulation. D. Muscle weakness is an important adverse effect because hydrochlorothiazide can cause hypokalemia through increased potassium excretion. Low potassium levels interfere with normal neuromuscular function, leading to weakness, fatigue, muscle cramps, and possible dysrhythmias. This finding should be reported promptly because severe hypokalemia can become life-threatening if untreated.