A 74-year-old man who previously underwent percutaneous coronary intervention (PCI) for a right coronary non-ST-segment elevation myocardial infarction was scheduled for physiology-guided PCI to a left main stem (LMS)/left anterior descending (LAD) lesion. Clinical Images from Journal of Invasive Cardiology. percutaneous coronary intervention non-ST-segment elevation myocardial infarction