A nurse is caring for a client who has Graves' disease and is to start therapy with propylthiouracil. The nurse should expect which of the following outcomes?

Increased Hct

Decreased WBC count

Decreased heart rate

Increased blood pressure

Answer and Explanation

The Correct Answer is C

A. Increased Hct. Propylthiouracil (PTU) is an antithyroid medication that reduces excessive thyroid hormone production in Graves' disease. It does not directly affect hematocrit (Hct) levels. While anemia can occur in some clients with untreated hyperthyroidism, PTU itself is not expected to raise Hct.

B. Decreased WBC count. A serious adverse effect of PTU is agranulocytosis, which results in a dangerously low white blood cell (WBC) count, increasing the risk of infection. However, this is a potential complication rather than an expected therapeutic outcome. Clients on PTU require regular monitoring of WBC levels to detect early signs of agranulocytosis.

C. Decreased heart rate. Graves’ disease causes hyperthyroidism, which increases metabolism and leads to symptoms such as tachycardia. PTU works by inhibiting thyroid hormone synthesis, leading to a gradual reduction in heart rate as thyroid function normalizes. This is a desired outcome of treatment, helping to reduce cardiovascular strain associated with hyperthyroidism.

D. Increased blood pressure. Hyperthyroidism can cause elevated blood pressure due to increased cardiac output. As PTU lowers thyroid hormone levels, blood pressure is expected to decrease or stabilize rather than increase. An increase in blood pressure would be unexpected and may indicate another underlying issue requiring evaluation.

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Correct Answer is B

Explanation

A. Jaundice. Jaundice, or yellowing of the skin and eyes, is a sign of liver dysfunction and may indicate hepatotoxicity rather than an allergic reaction. Some medications can cause drug-induced liver injury (DILI), but jaundice is not a typical symptom of an immediate hypersensitivity reaction.

B. Urticaria. Urticaria (hives) is a classic allergic reaction that appears as raised, red, itchy welts on the skin. It occurs due to the release of histamine in response to an allergen, which increases capillary permeability and leads to swelling and itching. Urticaria may be accompanied by angioedema, respiratory distress, or anaphylaxis, requiring immediate intervention if severe.

C. Bradycardia. Bradycardia (slow heart rate) is not a typical manifestation of an allergic reaction. While anaphylaxis can cause hypotension and tachycardia due to systemic vasodilation, bradycardia is more commonly associated with beta-blockers, heart block, or vagal stimulation rather than an allergic response.

D. Hypertension. Allergic reactions, especially severe ones like anaphylaxis, typically cause vasodilation and hypotension, not hypertension. While stress or anxiety related to an allergic episode may lead to a temporary rise in blood pressure, persistent hypertension is not a direct sign of an allergic reaction.

A. “I can discontinue this medication after one negative sputum culture." B. “I should take this medication on an empty stomach.” C. “I should expect to have ringing in my ears." D. “I can expect to have joint pain."

Correct Answer is B

Explanation

A. "I can discontinue this medication after one negative sputum culture." Treatment for tuberculosis requires a long-term regimen lasting at least 6 months, even if the sputum culture becomes negative. Discontinuing rifampin too early increases the risk of drug resistance and treatment failure. The client must continue therapy as prescribed and complete the full course.

B. "I should take this medication on an empty stomach." Rifampin should be taken on an empty stomach (1 hour before or 2 hours after meals) to improve absorption and effectiveness. Food can reduce the bioavailability of the drug, making it less effective in treating tuberculosis. If gastrointestinal discomfort occurs, the client should consult their provider before making adjustments.

C. "I should expect to have ringing in my ears." Tinnitus (ringing in the ears) is not a common side effect of rifampin. Ototoxicity is more commonly associated with aminoglycosides (e.g., streptomycin) or vancomycin. Rifampin’s notable side effects include hepatotoxicity, red-orange discoloration of body fluids, and gastrointestinal disturbances.

D. "I can expect to have joint pain." While rifampin can cause mild flu-like symptoms, including fatigue and muscle aches, persistent joint pain is not a typical side effect. If joint pain occurs, it may be related to another condition, such as drug-induced hepatotoxicity or an adverse reaction to other tuberculosis medications (e.g., pyrazinamide, which can cause gout-like symptoms).

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A nurse is caring for a client who has Graves' disease and is to start therapy with propylthiouracil. The nurse should expect which of the following outcomes?

Nursing Test Bank

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