PMID- 20805113 OWN - NLM STAT- MEDLINE DCOM- 20110930 LR - 20181201 IS - 1522-9645 (Electronic) IS - 0195-668X (Linking) VI - 31 IP - 20 DP - 2010 Oct TI - ISAR-REACT 3A: a study of reduced dose of unfractionated heparin in biomarker negative patients undergoing percutaneous coronary intervention. PG - 2482-91 LID - 10.1093/eurheartj/ehq330 [doi] AB - AIMS: Although a 140 U/kg dose of unfractionated heparin (UFH) was comparable with bivalirudin in terms of net clinical outcome in the Intracoronary Stenting and Antithrombotic Regimen: Rapid Early Action for Coronary Treatment (ISAR-REACT) 3 trial, it was associated with a higher risk of bleeding. We designed this study to assess whether a reduction in the UFH dose from 140 to 100 U/kg is associated with improved net clinical outcome. METHODS AND RESULTS: A total of 2505 biomarker negative patients undergoing percutaneous coronary intervention (PCI) after clopidogrel pre-treatment received a single bolus of 100 U/kg UFH. The primary endpoint was net clinical outcome-a quadruple endpoint of death, myocardial infarction, urgent target-vessel revascularization within 30 days, or in-hospital REPLACE 2 defined major bleeding. The primary comparison was with the historical UFH group of ISAR-REACT 3 (2281 patients). In a second analysis, we checked for non-inferiority against the historical bivalirudin arm of ISAR-REACT 3 (2289 patients). The incidence of the primary endpoint was 7.3% in the lower UFH dose group compared with 8.7% in the higher UFH dose group [hazard ratio (HR) 0.81; 95% confidence interval (CI) 0.67-1.00; P = 0.045]. The incidence of major bleeding was 3.6% in the lower UFH dose group and 4.6% in the higher UFH dose group (HR 0.79; 95% CI 0.59-1.05; P = 0.11). The lower UFH dose met the criterion of non-inferiority compared with bivalirudin (P < 0.001). CONCLUSION: In biomarker negative patients undergoing PCI after clopidogrel loading, a reduced dose of 100 U/kg UFH provided net clinical benefit compared with the historical control of 140 U/kg UFH in the ISAR-REACT 3 trial. The benefit was mostly driven by reduction in bleeding. CLINICAL TRIAL REGISTRATION INFORMATION: URL www.clinicaltrials.gov; Unique identifier NCT00735280. FAU - Schulz, Stefanie AU - Schulz S AD - Deutsches Herzzentrum Munchen, Technische Universitat, Lazarettstr. 36, 80636 Munich, Germany. schulzs@dhm.mhn.de FAU - Mehilli, Julinda AU - Mehilli J FAU - Neumann, Franz-Josef AU - Neumann FJ FAU - Schuster, Tibor AU - Schuster T FAU - Massberg, Steffen AU - Massberg S FAU - Valina, Christian AU - Valina C FAU - Seyfarth, Melchior AU - Seyfarth M FAU - Pache, Jurgen AU - Pache J FAU - Laugwitz, Karl-Ludwig AU - Laugwitz KL FAU - Buttner, Hans-Joachim AU - Buttner HJ FAU - Ndrepepa, Gjin AU - Ndrepepa G FAU - Schomig, Albert AU - Schomig A FAU - Kastrati, Adnan AU - Kastrati A CN - Intracoronary Stenting and Antithrombotic Regimen: Rapid Early Action for Coronary Treatment (ISAR-REACT) 3A Trial Investigators LA - eng SI - ClinicalTrials.gov/NCT00735280 PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20100830 PL - England TA - Eur Heart J JT - European heart journal JID - 8006263 RN - 0 (Anticoagulants) RN - 0 (Biomarkers) RN - 0 (Platelet Aggregation Inhibitors) RN - 9005-49-6 (Heparin) RN - A74586SNO7 (Clopidogrel) RN - OM90ZUW7M1 (Ticlopidine) SB - IM CIN - Eur Heart J. 2010 Oct;31(20):2447-8. PMID: 20876067 MH - Aged MH - Angina Pectoris/*therapy MH - Angioplasty, Balloon, Coronary MH - Anticoagulants/*administration & dosage MH - Biomarkers MH - Clopidogrel MH - Death, Sudden, Cardiac/prevention & control MH - Drug Therapy, Combination MH - Female MH - Follow-Up Studies MH - Heparin/*administration & dosage MH - Humans MH - Male MH - Middle Aged MH - Myocardial Infarction/prevention & control MH - Myocardial Revascularization MH - Platelet Aggregation Inhibitors/administration & dosage MH - Postoperative Hemorrhage/prevention & control MH - Prospective Studies MH - Ticlopidine/administration & dosage/analogs & derivatives MH - Treatment Outcome EDAT- 2010/09/02 06:00 MHDA- 2011/10/01 06:00 CRDT- 2010/09/01 06:00 PHST- 2010/09/01 06:00 [entrez] PHST- 2010/09/02 06:00 [pubmed] PHST- 2011/10/01 06:00 [medline] AID - ehq330 [pii] AID - 10.1093/eurheartj/ehq330 [doi] PST - ppublish SO - Eur Heart J. 2010 Oct;31(20):2482-91. doi: 10.1093/eurheartj/ehq330. Epub 2010 Aug 30.