International guidelines support the use of a full-dose heparin (anticoagulants) during coronary intervention. However, a lower dose of heparin may be adequate, thanks to advances in angioplasty techniques and the widespread use of pretreatment with two antiplatelet agents. Thus the investigators designed a study comparing safety and efficacy of standard dose heparin (100 UI/Kg) versus low-dose (50 UI/Kg) in patients undergoing coronary angioplasty who are on aspirin and clopidogrel at the time of the procedure.
* Patients undergoing coronary angioplasty will be randomised to standard vs. low-dose heparin. the study will include "all-comers" (patients with either stable angina or acute coronary syndromes); only patients with ST-elevation myocardial infarction will be excluded. * An ACT (activated clotting time) will be performed after the initial bolus of heparin: for the standard dose group the target ACT will be \> 300 sec. (as recommended by guidelines) while for the low-dose the target ACT will be \> 180 sec. Aim of the study is to show equivalence in ischemic events between the two doses of heparin, in order to confirm the safety of lower dose of heparin in contemporary coronary interventions.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
1,000
Bolus of 50 UI/Kg of heparin at the beginning of coronary interventions
Bolus of 100 UI/Kg of heparin at the beginning of coronary interventional procedure.
University of Rome La Sapienza
Rome, Italy
RECRUITINGMACE + stent thrombosis + major bleeding (TIMI definition)
MACE (death, myocardial infarction, target vessel revascularization) + stent thrombosis + major bleeding (TIMI definition)
Time frame: 30 days
MACE
MACE = death, myocardial infarction, target vessel revascularization
Time frame: 30 days
Major Bleeding
Major bleeding according to TIMI criteria
Time frame: 30 days
Stent thrombosis
Stent thrombosis (definite or probable according to ARC criteria)
Time frame: 30 days
CK-MB increase
Any CK MB increase \>3 times upper limit of normal or \>50% baseline levels (if baseline levels already \>then upper limit of normal)
Time frame: 30 days
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