It's not what you think - POCUS is not going to be used to diagnose a GI bleed. However, perhaps it can be used to risk stratify this diverse group of patients. These authors had the idea to check IVC, echo, and LVOT VTI to see if it could help predict which patients are going to have adverse events from their bleed. https://www.ultrasoundgel.org/89 https://www.ncbi.nlm.nih.gov/pubmed/31379015