Myocardial Protection With Adenosine During Primary Percutaneous Coronary Intervention in Pts With STEMI

Study Overview
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Brief Summary
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OBJECTIVE: to evaluate the safety and efficacy of a brief intracoronary infusion of ADO applied at the time of reperfusion to limit infarct size and LV remodelling in patients with ACSST submitted to primary ACTP. DESIGN: Multicentric, prospective, randomised, parallel, placebo-controlled double-blind study. PATIENTS: 200 patients older than 18 with ACSST and without prior myocardial infarction receiving primary PTCA within 6 hours after symptom onset.

Detailed Description
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The main mechanism responsible for the sanitary impact of ischemic heart disease is cardiomyocyte cell death associated to acute coronary syndrome with ST segment elevation (ACSST). In most of these patients, performing PTCA or thrombolysis as soon as possible does not prevent the occurrence of myocardial necrosis involving a substantial portion of the area at risk. Intracoronary adenosine (ADO) at the time of reperfusion limits infarct size in animals, and preliminary clinical studies indicate that may be also protective in patients with ACSST receiving early reperfusion therapy. OBJECTIVE: to evaluate the safety and efficacy of a brief intracoronary infusion of ADO applied at the time of reperfusion to limit infarct size and LV remodelling in patients with ACSST submitted to primary ACTP. DESIGN: Multicentric, prospective, randomised, parallel, placebo-controlled double-blind study. PATIENTS: 200 patients older than 18 with ACSST and without prior myocardial infarction receiving primary PTCA within 6 hours after symptom onset. PROTOCOL: Intracoronary ADO (4mg) or placebo (saline) infusion distal to the culprit lesion immediately before stent deployment, NMR between 6 and 14 days and after 6 months. END-POINTS: Major: infarct size as measured by NMR, Secondary: changes in LV volumes and EF, and major cardiac events during the follow-up.

Official Title
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Myocardial Protection During reperfusión in Patients With Acute Coronary Syndrome With ST Segment Elevation Submitted to Primary Angioplasty: Effect of Intracoronary Adenosine on Infarct Size and Ventricular Remodeling.

Conditions
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Acute Myocardial Infarction

Intervention / Treatment
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* Drug: Adenosine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients older than 18 years. patients with acute coronary syndrome with ST segment elevation within six hours of the onset of symptoms. Exclusion Criteria: patients younger than 18 years and pregnant women. patients with previous transmural infarction. patients with clinical evidence of bronchospastic lung disease or prior bronchodilator therapy. patients with pacemakers. patients with TIMI flow higher than 1 and lower than 3.

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: Double


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: Adenosine|Single dose of adenosine. Solution for infusion of 0.45 mg/mL. Enteral use.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Infarct size measured by MRI |  | between 5 and 10 days after acute myocardial infarction | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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adenosine, angioplasty, acute myocardial infarction, acute coronary syndrome with ST segment elevation, infarct size, rescued myocardium