Survivor of Right Atrial Appendage Rupture Following Blunt Chest Trauma.

A 20-year-old woman presented to our trauma center with cardiac rupture after a motor vehicle collision. Our patient was the restrained driver in a high-speed collision. She arrived without external evidence of trauma but in obvious distress with tachycardia, tachypnea, and hypotension. Initial FAST was negative and chest x-ray; however, second FAST was equivocal for pericardial fluid. Computed tomography demonstrated a large hemopericardium, suspicious for cardiac injury. She underwent emergent operative exploration with a median sternotomy. A 1 cm right atrial appendage avulsion was identified and repaired primarily. She recovered uneventfully and was discharged home. Survival of blunt cardiac rupture is extremely rare and can occur in the absence of any external signs of trauma. Surgeons should maintain clinical suspicion for blunt cardiac injury in unstable trauma patients with deceleration injuries. Injury to the low-pressure right atrium likely contributed to her ability to survive transport to a trauma center.