HPI: 57 y/o woman with remote hx of CABG/PCI presents with 2 hrs of 6-10/10 substernal chest tightness and SOB. No recent cardiac events/complaints. Initial troponin is 1.48.
Question: Is this patient experiencing a STEMI despite the lack of ST elevations ≥1mm? How would you diagnose this and explain to your cardiology consultants?