Piperacillin Sodium and Tazobactam Sodium-Induced Neutropenia and Thrombocytopenia: A Case Report.

Piperacillin sodium/tazobactam sodium (PIP-TAZ) is a commonly used antibiotic for various infections. While generally well-tolerated, it has been associated with rare cases of neutropenia and thrombocytopenia. This case report highlights the potential for PIP-TAZ to cause these adverse effects, emphasizing the importance of vigilant monitoring and timely intervention. A 79-year-old female with chronic renal failure and end-stage renal disease developed neutropenia and thrombocytopenia during treatment with PIP-TAZ for a suspected lung infection. Her neutrophil count plummeted from 11.17 × 109/L to 0.37 × 109/L, while her platelet count dropped from 282 × 109/L to 4 × 109/L. Despite interventions including platelet transfusions, the counts only normalized after discontinuing PIP-TAZ.P2P4. The patient's clinical course and response to discontinuation of PIP-TAZ suggest a likely causal relationship between the drug and her hematological abnormalities. Differential diagnoses, including severe infection, disseminated intravascular coagulation, and hematological malignancies, were ruled out through clinical examination and laboratory tests. The exact mechanism by which PIP-TAZ causes neutropenia and thrombocytopenia remains unclear but may involve immune-mediated reactions, direct drug toxicity, individual differences, and potential drug interactions in patients with renal impairment. Preventative measures include thorough pre-treatment evaluation, close monitoring of complete blood counts, individualized medication regimens, and prompt discontinuation upon suspicion of adverse effects. This case report underscores the need for clinicians to be aware of the potential hematological adverse effects of PIP-TAZ, particularly in patients with chronic diseases or renal insufficiency. Regular monitoring, prompt recognition, and timely intervention are crucial for ensuring patient safety and minimizing the risk of serious complications.