Purpose: To report the endovascular treatment of a relatively uncommon type
of deceleration injury to the abdominal aorta.
Case Report: A 21-year-old backseat passenger was wearing a single lap belt
without shoulder harness when the car was involved in a collision. He sust
ained a transverse (Chance) fracture of the third lumbar vertebra and a cir
cumferential dissection of the infrarenal abdominal aorta with pseudoaneury
sm. As an interim measure while a stent-graft was obtained, a Wallstent was
deployed to tack down the dissection and prevent distal embolization. Thir
ty-six hours later, an AneuRx endograft was successfully implanted inside t
he Wallstent to seal the pseudoaneurysm. The patient's recovery was unevent
ful, and the endograft remains secure and the pseudoaneurysm excluded at 10
months after the accident.
Conclusions: Endovascular repair of "seat belt aorta" is a minimally invasi
ve, straightforward method of management for this type of aortic injury. Th
e potential for infection in a contaminated peritoneal cavity and the long-
term outcome of this treatment have not been determined.