Related Experiment Videos
Isoniazid-induced pure red cell aplasia
The American Review of Respiratory Disease
|June 1, 1985
Abstract:
Pure red blood cell aplasia (PRCA) is an extremely rare side effect of isoniazid (INH). We have encountered 2 patients who developed anemia caused by PRCA. One was receiving INH preventive therapy and the other was being treated with INH and rifampin. On withdrawal of INH, the anemia responded rapidly. For unexplained anemia during INH therapy, PRCA should be considered as a cause.
Insights
Pure red blood cell aplasia (PRCA) is a rare side effect of isoniazid (INH). Discontinuation of INH led to rapid anemia recovery in two patients, suggesting PRCA as a potential cause for unexplained anemia during INH treatment.
Area of Science:
- Hematology
- Pharmacology
- Infectious Diseases
Background:
- Isoniazid (INH) is a primary drug for tuberculosis prevention and treatment.
- Drug-induced anemia is a known but uncommon complication of various medications.
Observation:
- Two patients developed severe anemia during isoniazid therapy.
- One patient received INH preventive therapy; the other received combination therapy with INH and rifampin.
Findings:
- Both patients were diagnosed with pure red blood cell aplasia (PRCA).
- Anemia resolved rapidly upon discontinuation of isoniazid in both cases.
Implications:
- Pure red blood cell aplasia should be considered in the differential diagnosis of unexplained anemia in patients undergoing isoniazid therapy.
- Early recognition and withdrawal of isoniazid can lead to prompt recovery from drug-induced PRCA.