Trieste Italy

1 Introduction Satellite observations indicate that most Antarctic ice shelves have thinned over the past decades (e.g., Paolo et al., 2015; Rignot et al., 2013) primarily due to increased basal melting driven by relatively warm water masses from the Southern Ocean (Depoorter et al., 2013; Liu et al., 2015; Pritchard et al., 2012; Rignot et al., 2019).

INTRODUCTION One component of the pelagic sediment around Antarctica is the diatom ooze that mostly occurs between the northern extent of the Antarctic Polar Front Zone and the northern limit of the summer sea ice (Dutkiewicz et al., 2016).

The use of point-of-care ultrasonography (POC US) in paediatrics is increasing. This study investigated the diagnostic accuracy of POC US in children accessing the emergency department (ED) when performed by paediatricians under the remote guidance of radiologists (TELE POC).