In trauma, the acronym FAST is used. What does this stand for?

Rationale: A. FAST is a rapid, bedside ultrasound examination performed during the primary survey of a trauma patient, often alongside the ABCs (airway, breathing, circulation). Its purpose is to quickly detect free fluid—most commonly blood—in key areas such as the peritoneal cavity (e.g., Morrison’s pouch between the liver and kidney), the splenorenal recess, the pelvis, and the pericardial sac. The presence of free fluid in a trauma setting is highly suggestive of internal bleeding and may prompt immediate surgical intervention. FAST is especially valuable because it is non-invasive, can be performed quickly, does not expose the patient to radiation, and can be repeated as needed. It is commonly used in unstable patients where rapid decision-making is critical. An extended version, eFAST, also assesses for pneumothorax and hemothorax. B. Although FAST is often performed early in trauma evaluation, the acronym specifically stands for “Focused Assessment,” emphasizing its targeted and rapid nature rather than simply being the first step. C. This option misrepresents the acronym. FAST is not a general evaluation of findings but a focused, protocol-driven assessment to detect internal bleeding in specific anatomical areas. D. This option is inaccurate and does not reflect standard trauma terminology. FAST is part of the primary survey and is not defined by “secondary findings.”