🩺 Nursing Question of the Day

Challenge yourself with one exam-style nursing question every day.

✅ Think carefully • ✅ Choose your answer • ✅ Then scroll down to check the explanation.

💊 Clozapine & Agranulocytosis

🔎 Why is ANC Count the correct answer?

Clozapine is an atypical antipsychotic used primarily for treatment-resistant schizophrenia and certain other serious psychiatric conditions. A major potentially life-threatening adverse effect is severe neutropenia/agranulocytosis.

Neutrophils are important white blood cells that help defend the body against bacterial and fungal infections. When their number becomes dangerously low, even a minor infection can become rapidly serious.

The patient’s combination of fever + sore throat + profound weakness is therefore a major warning pattern for possible severe neutropenia while taking clozapine.

🧪 What is ANC?

ANC stands for Absolute Neutrophil Count. It estimates the number of circulating neutrophils available to fight infection.

The exact management of clozapine depends on the ANC result and the applicable monitoring protocol. A patient who develops signs of infection while taking clozapine requires prompt clinical assessment rather than waiting for routine monitoring.

⚠️ Why are fever and sore throat important?

A patient with severe neutropenia may not mount a normal inflammatory response. Therefore, fever may be an important early or only obvious sign of infection. Sore throat can also signal an infection occurring in the setting of reduced neutrophil defenses.

This is why these symptoms in a patient receiving clozapine should never be dismissed as an ordinary medication side effect.

❌ Why are the other options incorrect?

A. Serum sodium — Incorrect.
Sodium testing evaluates electrolyte balance. Although electrolyte abnormalities can cause weakness or neurological symptoms, it does not specifically investigate the dangerous blood-cell complication suggested by fever and sore throat during clozapine therapy.

C. Serum amylase — Incorrect.
Amylase is primarily used when evaluating pancreatic injury, such as pancreatitis. The symptoms in this question do not point primarily toward pancreatic disease.

D. Bleeding time — Incorrect.
Bleeding-time testing does not evaluate neutrophil count or infection risk. The major concern here is clozapine-associated neutropenia/agranulocytosis, so ANC is the relevant investigation.

🩺 Nursing Priorities

When a patient taking clozapine develops fever, sore throat, or other signs of infection, the nurse should treat the situation as clinically significant and promptly notify the appropriate healthcare provider/mental-health team according to local protocol.

The nurse should assess temperature and other infection signs, obtain the ordered blood count/ANC promptly, and follow the current clozapine monitoring and treatment protocol. Do not simply reassure the patient that these symptoms are expected.