Modified BLUE Protocol Ultrasonography can diagnose thrombotic manifestations of COVID-19 with Normal lung Ultrasound

COVID-19 infection can present with thrombotic manifestations like PE with no ultrasonographic evidence of lung parenchymal affection. BLUE protocol provides excellent step by step approach for diagnosis of acute dyspnoea. Adding FECHO to BLUE protocol complete the picture and help making solid diagnosis especially in sub-massive and massive PE