# Anaphylactoid reactions during implantation of polymer-filled ring stent grafts for treatment of abdominal aortic aneurysms

## TL;DR

This paper reports rare anaphylactoid reactions during stent graft implantation for abdominal aortic aneurysms and how they were managed effectively.

## Contribution

The novelty lies in documenting and managing anaphylactoid reactions caused by polymer leakage during specific stent graft implantation.

## Key findings

- Anaphylactoid reactions occurred during implantation of polymer-filled stent grafts.
- Treatment with amines and antihistamines stabilized patients without affecting surgical outcomes.
- No death-related events were observed despite the reactions.

## Abstract

Polymer ring stent grafts from Endologix are reliable to treat challenging abdominal aortic aneurysm anatomy (hostile neck and tortuous or narrow iliac arteries). Rare cases of anaphylactoid reactions have been reported during the filing time of the graft rings due to polymer leakage. Management with amines, an antihistamine drug, and supportive care quickly stabilized both of our patients, which permitted the continuation and completion of their surgery. In our experience, there was no death-related events nor negative impact on patients surgical and clinical outcomes. We report on polymer leakage using the Ovation IX and ALTO stent grafts resulting in an anaphylactoid reaction.