Rapid Activity of Platelet Inhibitor Drugs Study 2

Study Overview
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Brief Summary
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The aim of the RAPID study is to evaluate the superiority rapid onset of action of Ticagrelor 360 mg LD versus Prasugrel 60 mg LD, in 50 patients with STEMI (ST segment elevation myocardial infarction) undergoing PPCI with bivalirudin monotherapy. Secondary study aim is to found out clinical predictors of high residual platelet reactivity in the first hour after a novel oral antiplatelet agent LD.

Detailed Description
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50 consecutive patients with STEMI undergoing PPCI with bivalirudin (GP IIb/IIIa not allowed) will be randomized to receive Prasugrel (n= 25) or Ticagrelor (n= 25) before PPCI ( primary percutaneous coronary intervention) in a open label fashion. The loading dose of Prasugrel will be 60 mg, the loading dose of Ticagrelor will be 360 mg in 25 patients. The loading dose will be performed as soon as possible in the Emergency Room or in the Cath Lab. In the case of vomit in the first hour after drug loading dose a new reduced loading dose will be administered (30 mg Prasugrel or 180 mg Ticagrelor). All interventions will be performed by the femoral approach according to current standards. The use of thrombectomy before infarct-related artery stenting, of everolimus eluting stent and of closure devices will be strongly encouraged. Bivalirudin will be administered as a bolus 0.75 mg/kg followed by 1.75 mg/kg/h infusion during PCI. After PCI (percutaneous coronary intervention) a reduced bivalirudin infusion of 0.25 mg/kg/h for 4 hours will be allowed. Dual antiplatelet therapy (100 mg aspirin associated with 5 or 10 mg Prasugrel or 180 mg Ticagrelor) will be recommended for 12 months. Residual platelet reactivity will be assessed in all patients at baseline (time of LD), and after 1, 2, 4 and 12 hours by a point-of-care test VerifyNow bedside available in the Intensive cardiac care Unit. High residual platelet reactivity will be defined as a Platelet Reactivity Units (PRU) > 240 by VerifyNow. At the same time point, Aspirin Reactivity Units (ARU) by VerifyNow will be also assessed. Follow-up will be performed by outpatient visits or telephone interviews at 6 months.

Official Title
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Rapid Activity of Platelet Inhibitor Drugs Study (RAPID 2)

Conditions
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Myocardial Infarction

Intervention / Treatment
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* Drug: Prasugrel
* Drug: Ticagrelor


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients presenting within 12 hours from the onset of symptoms with STEMI (ST segment elevation myocardial infarction) Informed, written consent Exclusion Criteria: Age < 18 years or Age > 75 years Active bleeding; bleeding diathesis; coagulopathy Increased risk of bradycardiac events History of gastrointestinal or genitourinary bleeding <2 months Major surgery in the last 6 weeks History of intracranial bleeding or structural abnormalities Suspected aortic dissection Any previous TIA (transient ischemic attack)/stroke Any other condition that may put the patient at risk or influence study results or investigator's opinion (severe haemodynamic instability, known malignancies or other comorbid conditions with life expectancy <1 year) Administration in the week before the index event of clopidogrel, ticlopidine, prasugrel, ticagrelor, thrombolytics, bivalirudin, low-molecular weight heparin or fondaparinux . Concomitant oral or IV therapy with strong CYP3A inhibitors or strong CYP3A inducers, CYP3A with narrow therapeutic windows Known relevant hematological deviations: Hb <10 g/dl, Platelet count <100x10^9/l Use of coumadin derivatives within the last 7 days Chronic therapy with prasugrel or ticagrelor Known severe liver disease, severe renal failure Known allergy to the study medications

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Prasugrel loading dose<br>25 patients with STEMI undergoing PPCI with bivalirudin (GP IIb/IIIa not allowed) will be randomized to receive Prasugrel before PPCI. | Drug: Prasugrel<br>* 25 patients with STEMI undergoing PPCI with bivalirudin (GP IIb/IIIa not allowed) will be randomized to receive Prasugrel before PPCI. The loading dose of Prasugrel will be 60 mg. The loading dose will be performed as soon as possible in the Emergency Room or in the Cath Lab. In the case of vomit in the first hour after drug loading dose a new reduced loading dose will be administered .<br>|
| Active Comparator: Ticagrelor loading dose<br>25 patients with STEMI undergoing PPCI with bivalirudin (GP IIb/IIIa not allowed) will be randomized to receive Ticagrelor before PPCI. | Drug: Ticagrelor<br>* 25 patients with STEMI undergoing PPCI with bivalirudin (GP IIb/IIIa not allowed) will be randomized to receive Ticagrelor before PPCI. The loading dose of Ticagrelor will be 360 mg. The loading dose will be performed as soon as possible in the Emergency Room or in the Cath Lab. In the case of vomit in the first hour after drug loading dose a new reduced loading dose will be administered .<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Residual Platelet Reactivity by VerifyNow | residual platelet reactivity by Platelet Reactivity Units (PRU) VerifyNow 1 hour after oral antiplatelet agent LD. | 1 hour | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| High residual platelet reactivity | High residual platelet reactivity will be defined as a Platelet Reactivity Units (PRU) > 240 by VerifyNow | 2,4,12 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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platelet inhibitor, ST-segment Elevation, Myocardial Infarction, stent, prasugrel, ticagrelor