Comparison of Percutaneous Coronary Intervention Optimization With Fractional Flow Reserve Versus Intravascular Ultrasound in the Treatment of Long Coronary Artery Lesions

Inclusion Criteria

• •Chronic coronary syndrome (stable angina; staged PCI to other lesions after acute myocardial infarction with ST segment elevation);
• •Acute coronary syndrome without ST segment elevation (unstable angina or myocardial infarction without ST segment elevation);
• •Functionally significant (FFR ≤ 0.8) lesion requiring a stent length of ≥ 30 mm and amenable for percutaneous coronary intervention.