PMID- 36769435 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230213 IS - 2077-0383 (Print) IS - 2077-0383 (Electronic) IS - 2077-0383 (Linking) VI - 12 IP - 3 DP - 2023 Jan 18 TI - How to Solve the Conundrum of Heparin-Induced Thrombocytopenia during Cardiopulmonary Bypass. LID - 10.3390/jcm12030786 [doi] LID - 786 AB - Heparin-induced thrombocytopenia (HIT) is a major issue in cardiac surgery requiring cardiopulmonary bypass (CPB). HIT represents a severe adverse drug reaction after heparin administration. It consists of immune-mediated thrombocytopenia paradoxically leading to thrombotic events. Detection of antibodies against platelets factor 4/heparin (anti-PF4/H) and aggregation of platelets in the presence of heparin in functional in vitro tests confirm the diagnosis. Patients suffering from HIT and requiring cardiac surgery are at high risk of lethal complications and present specific challenges. Four distinct phases are described in the usual HIT timeline, and the anticoagulation strategy chosen for CPB depends on the phase in which the patient is categorized. In this sense, we developed an institutional protocol covering each phase. It consisted of the use of a non-heparin anticoagulant such as bivalirudin, or the association of unfractionated heparin (UFH) with a potent antiplatelet drug such as tirofiban or cangrelor. Temporary reduction of anti-PF4 with intravenous immunoglobulins (IvIg) has recently been described as a complementary strategy. In this article, we briefly described the pathophysiology of HIT and focused on the various strategies that can be applied to safely manage CPB in these patients. FAU - Revelly, Etienne AU - Revelly E AUID- ORCID: 0000-0001-8071-676X AD - Department of Anesthesiology, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Scala, Emmanuelle AU - Scala E AUID- ORCID: 0000-0003-0399-3223 AD - Department of Anesthesiology, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. AD - Faculty of Biology and Medicine, University of Lausanne (UNIL), Rue du Bugnon 21, 1011 Lausanne, Switzerland. FAU - Rosner, Lorenzo AU - Rosner L AUID- ORCID: 0000-0002-7301-568X AD - Department of Anesthesiology, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Rancati, Valentina AU - Rancati V AUID- ORCID: 0000-0002-6313-1185 AD - Department of Anesthesiology, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Gunga, Ziyad AU - Gunga Z AD - Department of Cardiac Surgery, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Kirsch, Matthias AU - Kirsch M AD - Faculty of Biology and Medicine, University of Lausanne (UNIL), Rue du Bugnon 21, 1011 Lausanne, Switzerland. AD - Department of Cardiac Surgery, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Ltaief, Zied AU - Ltaief Z AUID- ORCID: 0000-0001-9199-4415 AD - Department of Intensive Care Medicine, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Rusca, Marco AU - Rusca M AD - Department of Intensive Care Medicine, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Bechtold, Xavier AU - Bechtold X AD - Department of Cardiac Surgery, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Alberio, Lorenzo AU - Alberio L AUID- ORCID: 0000-0001-9686-9920 AD - Faculty of Biology and Medicine, University of Lausanne (UNIL), Rue du Bugnon 21, 1011 Lausanne, Switzerland. AD - Division of Hematology and Central Hematology Laboratory, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. FAU - Marcucci, Carlo AU - Marcucci C AUID- ORCID: 0000-0002-0954-0295 AD - Department of Anesthesiology, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland. AD - Faculty of Biology and Medicine, University of Lausanne (UNIL), Rue du Bugnon 21, 1011 Lausanne, Switzerland. LA - eng PT - Journal Article PT - Review DEP - 20230118 PL - Switzerland TA - J Clin Med JT - Journal of clinical medicine JID - 101606588 PMC - PMC9918281 OTO - NOTNLM OT - antiplatelet therapy OT - cardiac surgery OT - cardiopulmonary bypass OT - direct thrombin inhibitor OT - heparin-induced thrombocytopenia syndrome OT - intraoperative management COIS- The authors declare no conflict of interest. EDAT- 2023/02/12 06:00 MHDA- 2023/02/12 06:01 PMCR- 2023/01/18 CRDT- 2023/02/11 01:26 PHST- 2022/12/23 00:00 [received] PHST- 2023/01/13 00:00 [revised] PHST- 2023/01/16 00:00 [accepted] PHST- 2023/02/11 01:26 [entrez] PHST- 2023/02/12 06:00 [pubmed] PHST- 2023/02/12 06:01 [medline] PHST- 2023/01/18 00:00 [pmc-release] AID - jcm12030786 [pii] AID - jcm-12-00786 [pii] AID - 10.3390/jcm12030786 [doi] PST - epublish SO - J Clin Med. 2023 Jan 18;12(3):786. doi: 10.3390/jcm12030786.