Review the following trauma patient presentations and pair each one with its definitive diagnostic modality or most appropriate immediate intervention.
- A 30-year-old man after a motor vehicle collision; blood pressure is 70/40 mm Hg, abdomen is rigid, and bedside ultrasound shows free fluid in the hepatorenal recess.Emergent exploratory laparotomy
- A 45-year-old pedestrian struck by a vehicle; blood pressure is 80/50 mm Hg, pelvis is mechanically unstable, bedside ultrasound is negative, and there is no response to fluid resuscitation and a pelvic binder.Pelvic angiography with embolization
- A 25-year-old man with a perineal straddle injury; physical examination reveals blood at the urethral meatus, a high-riding prostate, and inability to void.Retrograde urethrography
- A 55-year-old woman after a high-speed collision; hemodynamically stable, but chest radiograph demonstrates a widened mediastinum and an indistinct aortic knob.CT angiography of the chest
Answer
The unstable patient with a positive FAST requires exploratory laparotomy. The unstable pelvic fracture patient with a negative FAST requires pelvic angiography with embolization. The straddle injury patient with meatal blood requires retrograde urethrography. The stable patient with a widened mediastinum requires CT angiography of the chest.
Trauma management relies on strict algorithmic adherence. Intra-abdominal hemorrhage causing shock requires laparotomy. Unstable pelvic bleeding refractory to a binder requires angiography. Urethral injury signs mandate retrograde imaging to prevent complete transection. Finally, suspected blunt aortic injury in a stable patient is confirmed with CT angiography.
Step-by-Step Solution
Key Concept
Advanced Trauma Life Support (ATLS) algorithms dictate specific diagnostic and therapeutic pathways based heavily on the patient's hemodynamic stability and precise mechanism of injury.