What are the American College of Cardiology (ACC) and the American Heart Association (AHA) class I indications for coronary artery bypass grafting (CABG)?

Updated: Dec 04, 2019
  • Author: Rohit Shahani, MD, MS, MCh; Chief Editor: Karlheinz Peter, MD, PhD  more...
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Answer

Class I indications for CABG from the American College of Cardiology (ACC) and the American Heart Association (AHA) are as follows [1, 2] :

  • Over 50% left main coronary artery stenosis

  • Over 70% stenosis of the proximal left anterior descending (LAD) and proximal circumflex arteries

  • Three-vessel disease in asymptomatic patients or those with mild or stable angina

  • Three-vessel disease with proximal LAD stenosis in patients with poor left ventricular (LV) function

  • One- or two-Vessel disease and a large area of viable myocardium in high-risk area in patients with stable angina

  • Over 70% proximal LAD stenosis with either an ejection fraction (EF) below 50% or demonstrable ischemia on noninvasive testing


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