# Single-center early efficacy evaluation of Fontus branch-type intraoperative stenting for acute type a aortic dissection

## TL;DR

A new stent called Fontus was tested for treating aortic dissection and showed better results in closing the false aorta and reducing leaks compared to another stent.

## Contribution

The study evaluates the Fontus branch-type intraoperative stent's efficacy in acute type A aortic dissection for the first time.

## Key findings

- Fontus stent showed higher false lumen closure rates in the descending aorta.
- Fontus stent reduced endoleak rates after modified arch island anastomosis.
- Fontus stent was found safe and effective for acute type A aortic dissection.

## Abstract

To explore the clinical application value of the new Fontus intraoperative single-branch stent in acute type A aortic dissection (ATAAD).

Ninety ATAAD patients admitted to the Department of Cardiothoracic Surgery of Nanjing Gulou Hospital from March 2022 to June 2023 who met the exclusion criteria were retrospectively analyzed, with Fontus stent applied intraoperatively in 33 cases and Cronus stent applied intraoperatively in 57 cases. Clinical data of preoperative baseline data, intraoperative indexes, perioperative period and postoperative follow-up were collected from both groups.

The rate of false lumen closure of the descending aorta at the level of the pulmonary bifurcation was significantly higher in the Fontus group than in the Cronus group; and the rate of endoleak was lower after Fontus stent application for modified arch island anastomosis.

The new Fontus intraoperative single-branch stent is safe and effective in ATAAD and can reduce the incidence of postoperative endoleak.