title: Argatroban anticoagulation during percutaneous coronary intervention in patients with heparin-induced thrombocytopenia.
abstract: Heparin-induced thrombocytopenia (HIT) is an immune-mediated syndrome associated with thrombosis. Alternative anticoagulation to heparin is needed for HIT patients during percutaneous coronary intervention (PCI). We evaluated argatroban, a direct thrombin inhibitor, for anticoagulation in this setting. Ninety-one HIT patients underwent 112 PCIs while on intravenous argatroban (25 microg/kg/min [350 microg/kg initial bolus], adjusted to achieve an activated clotting time of 300-450 sec). Primary efficacy endpoints were subjective assessments of the satisfactory outcome of the procedure and adequate anticoagulation during PCI. Among patients undergoing initial PCIs with argatroban (n = 91), 94.5% had a satisfactory outcome of the procedure and 97.8% achieved adequate anticoagulation. Death (zero patients), myocardial infarction (four patients), or revascularization (four patients) at 24 hr after PCI occurred in seven (7.7%) patients overall. One patient (1.1%) experienced periprocedural major bleeding. For patients who had subsequent hospitalizations (mean separation of 150 days) for repeat PCI using argatroban anticoagulation (n = 21), there were no unsatisfactory outcomes. Overall, outcomes were comparable with those historically reported for heparin. Argatroban therefore is a reasonable anticoagulant option in this setting, where current options are limited.
mesh_terms: D000328:Adult; D015906:Angioplasty, Balloon, Coronary; D000925:Anticoagulants / Q000009:adverse effects*; D000991:Antithrombins / Q000627:therapeutic use*; D001120:Arginine / Q000031:analogs & derivatives; D017225:Atherectomy, Coronary; D005260:Female; D006493:Heparin / Q000009:adverse effects*; D006801:Humans; D008297:Male; D010875:Pipecolic Acids / Q000627:therapeutic use*; D015607:Stents; D013449:Sulfonamides; D013921:Thrombocytopenia / Q000139:chemically induced*; D013927:Thrombosis / Q000517:prevention & control*; D016896:Treatment Outcome
chemical_list: D000925:Anticoagulants; D000991:Antithrombins; D010875:Pipecolic Acids; D013449:Sulfonamides; D006493:Heparin; D001120:Arginine; C031942:argatroban