Abbreviations
CCB: calcium channel blockers
CVS: coronary vasospasm
DAPT: dual antiplatelet therapy
ECG: electrocardiogram
FFR: fractional flow reserve
ICD: intracardiac defibrillator
LAD: left anterior descending
RCA: right coronary artery
SCD: sudden cardiac death
TW: triangular QRS-ST-T waveform
VPCs: ventricular premature contractions