Acute Myocardial Infarction, Percutaneous Coronary Intervention
Conditions
Keywords
Acute myocardial infarction, Percutaneous coronary intervention, No-reflow phenomenon, Vasodilator agents
Brief summary
The purpose of this study is to evaluate the efficacy of three different vasodilators including diltiazem, verapamil and nitroglycerin for reversal of no-reflow/slow-flow during direct percutaneous coronary intervention for acute myocardial infarction.
Detailed description
No-reflow/slow-flow is a frequent observation during direct PCI for AMI and associated with a poor clinical outcome. The present pharmacological management involves the use of different vasodilators including nitrates, verapamil, adenosine and nicorandil. But no randomized trial has been conducted to assess any of these agents, or to determine the appropriate dosage. This prospective randomized study aimed to confirm favorable effects of diltiazem on no-reflow/slow-flow during direct PCI for AMI compared with verapamil and nitroglycerin.
Interventions
Intracoronary Infusion 400-2000ug
Intracoronary Infusion 200-1000ug
Intracoronary Infusion 200-1000ug
Sponsors
Study design
Eligibility
Inclusion criteria
* Clinical diagnosis of acute myocardial infarction * Vessel TIMI flow \< grade Ⅲ post-PCI
Exclusion criteria
* Heart failure of New York Heart Association (NYHA) class Ⅲ to class Ⅳ * Sick sinus syndrome * Atrioventricular block (grade Ⅱ and above) * SBP ≤ 90mmHg or cardiogenic shock * Heart Rate ≤60 bpm * Pregnancy * Renal or hepatic failure
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Vessel flow using TIMI flow grade and TIMI frame count | post-PCI |
Secondary
| Measure | Time frame |
|---|---|
| major adverse cardiovascular events (MACE) | within the first 30 days after PCI |
| Left ventricular ejection fraction (LVEF) through echocardiography | at 1 and 30 days post-PCI |
| NT-proBNP levels | at 1 and 30 days post-PCI |
| incidence of complete ST-segment resolution | 3 hours after PCI |
| peak troponin T level | 24 hours after PCI |
Countries
China