What imaging modality is typically used during the secondary survey for abdominal injury?

What imaging modality is typically used during the secondary survey for abdominal injury?

• A. MRI first line
• B. FAST (Focused Assessment with Sonography for Trauma); CT if stable
• C. X-ray only
• D. CT scan for all patients regardless of stability

Answer: (B)

In the secondary survey for abdominal injury, the imaging approach typically starts with a fast bedside ultrasound to quickly screen for free intraperitoneal fluid and organ injury. This FAST exam provides real-time information without moving an unstable patient, making it well-suited for the ongoing assessment after the initial survey. If the patient remains hemodynamically stable, a contrast-enhanced CT scan of the abdomen and pelvis is then obtained because CT gives a detailed delineation of solid organ injuries, vascular damage, and retroperitoneal injuries, guiding definitive management. The alternatives aren’t as practical in this setting: MRI is too time-consuming and not routinely used for acute trauma; plain X-rays alone often miss intra-abdominal injuries; performing CT in all patients regardless of stability isn’t necessary or safe when a patient is unstable.

In the secondary survey for abdominal injury, the imaging approach typically starts with a fast bedside ultrasound to quickly screen for free intraperitoneal fluid and organ injury. This FAST exam provides real-time information without moving an unstable patient, making it well-suited for the ongoing assessment after the initial survey. If the patient remains hemodynamically stable, a contrast-enhanced CT scan of the abdomen and pelvis is then obtained because CT gives a detailed delineation of solid organ injuries, vascular damage, and retroperitoneal injuries, guiding definitive management.

The alternatives aren’t as practical in this setting: MRI is too time-consuming and not routinely used for acute trauma; plain X-rays alone often miss intra-abdominal injuries; performing CT in all patients regardless of stability isn’t necessary or safe when a patient is unstable.