Case Report: rapid exacerbation of autoimmune hemolysis and severe immune - mediated thrombocytopenia induced by piperacillin – tazobactam
By
Juan Liu
Zhongliang Shi
He Zhang
Mingfang Qian
June 17, 2026
Clinical Scorecard: Case Study: Rapid Onset of Autoimmune Hemolysis and Severe Immune-Mediated Thrombocytopenia Triggered by Piperacillin-Tazobactam
At a Glance
Category Detail
Condition Drug-induced immune hemolytic anemia (DIIHA) and drug-induced thrombocytopenia (DITP) Key Mechanisms Induction of drug-specific antibodies targeting red blood cell autoantigens and potential immune mechanisms for thrombocytopenia. Target Population Patients receiving piperacillin-tazobactam, particularly elderly individuals. Care Setting Hospitalized patients, particularly those treated for pneumonia.
Key Highlights
Piperacillin-tazobactam can induce DIIHA and DITP. Diagnosis relies on clinical history, Direct Antiglobulin Test, and detection of drug-induced antibodies. Prompt recognition and management are critical for recovery. Effective treatment includes discontinuation of the drug, blood transfusions, IVIG, and corticosteroids. The case emphasizes the need for awareness of these rare adverse reactions. Guideline-Based Recommendations
Diagnosis
Correlational analyses between clinical history and hemolytic anemia manifestations. Positive Direct Antiglobulin Test for anti-IgG and/or anti-C3d. Management
Discontinue piperacillin-tazobactam immediately. Administer blood transfusions and IVIG as needed. Consider corticosteroid therapy. Monitoring & Follow-up
Careful monitoring of vital signs and laboratory parameters. Risks
Potential for cross-reactivity among β-lactam antibiotics. Patient & Prescribing Data
Elderly patients, particularly those with comorbidities.
Close monitoring for signs of hemolytic anemia and thrombocytopenia during antibiotic therapy is essential.
Clinical Best Practices
Educate clinicians on the signs and symptoms of DIIHA and DITP. Implement protocols for rapid identification of drug-induced adverse reactions. Ensure thorough patient history and laboratory testing when prescribing antibiotics. Related Resources & Content
