Heparin-induced thrombocytopenia (HIT) is an immune complication of heparin therapy caused by antibodies to complexes of platelet factor 4 (PF4) and heparin. Pathogenic antibodies to PF4/heparin bind and activate cellular FcγRIIA on platelets and monocytes to propagate a hypercoagulable state culminating in life-threatening thrombosis. It is now recognized that anti-PF4/heparin antibodies devel...

Heparin induced thrombocytopenia (HIT) is a prothrombotic syndrome initiated by platelet-activating auto-antibodies with potentially devastating complications. Once the diagnosis of HIT is suspected, discontinuation of heparin and treatment with an alternative anticoagulant are mandatory. While established drugs for HIT are no longer available, parenteral factor Xa inhibitors, thrombin inhibito...

Nebojša M. Antonijević1, Nebojša Radovanović1, Slobodan Obradović2, Dragica Vučelić6, Bojan Stojanović1, Danijela Miković4, Mirjana Kovač4, Tina Kočica1, Svetlana Tadić4, Irina Antonijević4, Snežana Drašković4, Valentina Djordjević5, Branko Čalija6, Jovan Peruničić1, Zorana Vasiljević1 1 Institute of Cardiovascular Diseases, Clinical Centre of Serbia, Belgrade, Serbia; 2 Clinic of Emergency Med...

BACKGROUND Vancomycin has only rarely been implicated as a cause of thrombocytopenia, and there is only limited evidence that this complication is caused by immune mechanisms. We conducted a study to determine whether thrombocytopenia is caused by vancomycin-dependent antibodies in patients being treated with vancomycin. METHODS We identified and characterized vancomycin-dependent, platelet-r...

BACKGROUND Heparin-induced thrombocytopenia is a relatively common antibody-mediated drug reaction. We studied the temporal relation between previous or current heparin therapy and the onset of heparin-induced thrombocytopenia. METHODS We examined the time between the start of heparin therapy and the onset of thrombocytopenia in 243 patients with serologically confirmed heparin-induced thromb...

Two teams of researchers have published detailed observations patients who developed thrombotic thrombocytopenia after receiving the AstraZeneca vaccine and speculated about a possible mechanism.12 Both groups suggest that development serious blood clots alongside falling levels platelets is an immune response resembles rare reaction to drug heparin, called heparin induced thrombocytopenia. Th...

BACKGROUND Heparin-induced thrombocytopenia is a relatively uncommon but severe side-effect of heparin therapy. Heparin-induced IgG antibody has been elucidated to be the main isotype and the most pathogenic antibody in the pathophysiology. As affected patients are at high risk of developing thrombotic events, confirmation of the clinical diagnosis and avoidance of heparin re-exposure are impor...

Oxaliplatin is a platinum compound used in patients with gastrointestinal malignancies. It is known to evoke a drug-induced immune-mediated thrombocytopenia, which has not been reported in Korea. We describe a 53-year-old man who developed oxaliplatin-induced immune-mediated thrombocytopenia during chemotherapy for colon cancer. Oxaliplatin-dependent IgG platelet antibodies were detected in his...

Thrombocytopenia occurs almost systematically in cardiac surgery under extracorporeal circulation (ECC). Its usual causes are multiple and recognized, but sometimes uncommon mechanisms added, posing the problem of etiological diagnosis dilemma optimal adequate management. The thrombocytopenia after requires a careful analysis chronology also clinical biological context. authors report observati...

Heparin-induced thrombocytopenia is a well-known, life-threatening complication that occurs in 5% of patients exposed to heparin. It causes thrombocytopenia in roughly 85% to 90% of affected individuals, with expected recovery in approximately 4 to 10 days following heparin withdrawal. However, there is an entity known as refractory heparin-induced thrombocytopenia with thrombosis in which pati...