Fig. 1.

Classification of total ischemic time during COVID-19 pandemic. The different stages of time delays from onset of symptoms until reperfusion therapy. TIT intervals are divided into hospital independent delays (symptom onset-to-FMC) and in-hospital delays (FMC-to-cath lab activation, and cath lab activation-to-PCI). *A clear EMS-STEMI diagnosis even during COVID-19 pandemic mandates direct and immediate catheterization lab activation to minimize total ischemic time at any given time as before COVID-19 pandemic. ECG should be performed within 10 min upon arrival. TIT, total ischemic time. FMC, first medical contact. EMS, emergency medical service. STEMI, ST-segment elevation myocardial infarction. ECG, electrocardiogram. ED, emergency department. PCI, percutaneus coronary intervention.