&;FAST&; can detect free blood if it is a minimum of
Focused abdominal sonar for trauma (FAST) is a technique whereby ultrasound (sonar) imaging is used to assess the torso for the presence of free blood, either in the abdominal cavity or in the pericardium. The technique, therefore, focuses on six areas: the pericardium, the areas around the liver and the spleen, the left and right pericolic gutters, and the peritoneal space in the pelvis. FAST is accurate at detecting >100 mL of free blood;Bailey and Love 26e pg: 359
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Trauma