<prompt> First step in management of blunt trauma abdomen isDPLCECTX-ray abdomen erectFAST  <response>: FAST Focussed Abdominal Sonar Trauma: Rapid, non-invasive, poable bedside method of investigation focusing on pericardium, splenic, hepatic, and pelvic vessels. Blood more than 100ml in cavities can be identified. Not reliable for bowel or penetrating injuries. Ref : SRB;s 4thE pg:149 