Surgical Revascularization Strategies After Acute Coronary Syndrome

Risk Stratification and Timing of Intervention

• The American College of Cardiology recommends immediate coronary angiography followed by appropriate revascularization for high-risk patients with acute coronary syndrome, with percutaneous coronary intervention (PCI) preferred for single-vessel disease and coronary artery bypass grafting (CABG) recommended for left main or triple-vessel disease, particularly in patients with left ventricular dysfunction 1, 2, 3
• Patients with acute coronary syndrome should be risk-stratified to determine the optimal revascularization strategy and timing, with high-risk patients requiring urgent revascularization including those with recurrent ischemia, elevated troponin levels, hemodynamic instability, or cardiogenic shock 4, 5, 6
• The European Heart Journal recommends immediate revascularization for patients with severe ongoing ischemia, major arrhythmias, or hemodynamic instability, and within 24-48 hours for high-risk non-ST-elevation acute coronary syndrome (NSTE-ACS) patients without immediate indications 4, 7

Revascularization Strategies Based on Clinical Presentation

• The American College of Cardiology recommends primary PCI as the preferred strategy for ST-elevation myocardial infarction (STEMI) patients presenting within 12 hours of symptom onset or up to 24 hours if clinical instability is present 7
• For patients initially treated with fibrinolysis, immediate revascularization is appropriate for suspected failed fibrinolysis, and PCI performed 3-24 hours after successful fibrinolysis is appropriate for stable patients 8
• The American College of Cardiology recommends immediate revascularization for patients with cardiogenic shock, and early revascularization (within 24-48 hours) for stabilized patients with intermediate or high-risk features 9, 7

Selection of Revascularization Method (PCI vs. CABG)

• The decision regarding the most appropriate revascularization procedure should be made after careful evaluation of the extent and characteristics of the lesions, with PCI preferred for single-vessel disease and CABG recommended for left main or triple-vessel disease, particularly in patients with left ventricular dysfunction 6, 4, 1
• The American College of Cardiology recommends CABG for left main disease, triple-vessel disease, particularly with left ventricular dysfunction, complex multivessel coronary artery disease, and diabetes with multivessel disease 6, 4, 1

Management of Non-Culprit Lesions

• For patients with STEMI and multivessel disease, immediate revascularization of non-culprit arteries is appropriate in cardiogenic shock persisting after PCI of the culprit artery, and revascularization of non-culprit arteries during the same hospitalization is appropriate for patients with spontaneous or easily provoked symptoms of myocardial ischemia and severe stenoses 8, 1
• The American College of Cardiology recommends revascularization of non-culprit arteries during the same procedure as culprit PCI may be appropriate in stable patients, and revascularization of non-culprit arteries without evidence of ischemia or functional significance (FFR) is rarely appropriate 8, 1

Caveats and Pitfalls

• Failure to recognize the need for CABG in complex multivessel disease may lead to suboptimal outcomes with PCI alone, and performing PCI on non-culprit lesions without evidence of ischemia or functional significance (FFR) is rarely appropriate 7, 1, 8
• The European Heart Journal recommends antiplatelet therapy management, with clopidogrel stopped approximately 5 days before CABG if the operation can be safely deferred 4