Introduction to the update series: update in intensive care medicine: ultrasound in the critically ill patient. Clinical applications Ana Ochagavía; Virginia Fraile; Lluis Zapata;

Abdominal ultrasound and VExUS score in critical care Laura Galarza Barrachina; Laura Colinas Fernández; Rafael Martín Bermúdez; Adela Fernández Galilea; Luis Martín-Villén;

Narrative review of ultrasound in the management of the critically ill patient with SARS-CoV-2 infection (COVID-19): clinical applications in intensive care medicine V. Fraile Gutiérrez; J.M. Ayuela Azcárate; D. Pérez Torres; L. Zapata; A.L. Rodríguez Yakushev; A. Ochagavía Calvo;