Agnes-Sophie Fritz, Marten Trendelenburg, Markus Mutke
{"title":"Piperacillin/Tazobactam Induced Immune-Mediated Anaemia and Thrombocytopenia.","authors":"Agnes-Sophie Fritz, Marten Trendelenburg, Markus Mutke","doi":"10.12890/2025_005460","DOIUrl":null,"url":null,"abstract":"<p><p>Piperacillin/tazobactam (PTZ) is known to cause cytopenia but case reports on PTZ causing combined haemolytic anaemia and thrombocytopenia are scarce. We report on a 56-year-old male who developed severe, immune-mediated thrombocytopenia and anaemia during two treatment episodes with PTZ. After the first exposure, his blood count rapidly returned to normal after discontinuation of PTZ. One year later, in the context of an unintentional re-challenge with PTZ, the level of red blood cells and platelets dropped again causing acute haemolytic anaemia and immune thrombocytopenia. Recovery was delayed after discontinuation of PTZ. PTZ should be considered as a potential cause of immune-mediated bicytopenia.</p><p><strong>Learning points: </strong>Piperacillin/tazobactam can induce immune-mediated haemolytic anaemia and thrombocytopenia.Patients with underlying alteration of the immune system might be at higher risk for bicytopenia.</p>","PeriodicalId":11908,"journal":{"name":"European journal of case reports in internal medicine","volume":"12 9","pages":"005460"},"PeriodicalIF":0.0000,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12416790/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European journal of case reports in internal medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12890/2025_005460","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0
Abstract
Piperacillin/tazobactam (PTZ) is known to cause cytopenia but case reports on PTZ causing combined haemolytic anaemia and thrombocytopenia are scarce. We report on a 56-year-old male who developed severe, immune-mediated thrombocytopenia and anaemia during two treatment episodes with PTZ. After the first exposure, his blood count rapidly returned to normal after discontinuation of PTZ. One year later, in the context of an unintentional re-challenge with PTZ, the level of red blood cells and platelets dropped again causing acute haemolytic anaemia and immune thrombocytopenia. Recovery was delayed after discontinuation of PTZ. PTZ should be considered as a potential cause of immune-mediated bicytopenia.
Learning points: Piperacillin/tazobactam can induce immune-mediated haemolytic anaemia and thrombocytopenia.Patients with underlying alteration of the immune system might be at higher risk for bicytopenia.
期刊介绍：
The European Journal of Case Reports in Internal Medicine is an official journal of the European Federation of Internal Medicine (EFIM), representing 35 national societies from 33 European countries. The Journal''s mission is to promote the best medical practice and innovation in the field of acute and general medicine. It also provides a forum for internal medicine doctors where they can share new approaches with the aim of improving diagnostic and clinical skills in this field. EJCRIM welcomes high-quality case reports describing unusual or complex cases that an internist may encounter in everyday practice. The cases should either demonstrate the appropriateness of a diagnostic/therapeutic approach, describe a new procedure or maneuver, or show unusual manifestations of a disease or unexpected reactions. The Journal only accepts and publishes those case reports whose learning points provide new insight and/or contribute to advancing medical knowledge both in terms of diagnostics and therapeutic approaches. Case reports of medical errors, therefore, are also welcome as long as they provide innovative measures on how to prevent them in the current practice (Instructive Errors). The Journal may also consider brief and reasoned reports on issues relevant to the practice of Internal Medicine, as well as Abstracts submitted to the scientific meetings of acknowledged medical societies.
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