Fig. 3.

Proposed operative flowchart on early management of patients suspected of COVID-19 during a pandemic surge, according to the clinical evaluation at presentation and the assignment of the LUS probability pattern. Final decision should consider that the protocol allows to rule-in or rule-out COVID-19 as the main cause of the presenting symptoms. HighLUS high-probability lung ultrasound pattern, LowLUS low-probability lung ultrasound pattern, IntLUS intermediate-probability lung ultrasound pattern, AltLUS alternative probability lung ultrasound pattern, COVID-19 Corona Virus Disease 2019