Off-the-Shelf Multibranched Endograft for Type Ia Endoleak after Endovascular Aortic Repair: A Single-Center Study of the G-Branch Endograft.

BACKGROUND

To investigate the clinical outcomes of use of a novel off-the-shelf multibranched endovascular stent graft in patients with type Ia endoleak after endovascular aortic repair (EVAR).

METHODS

Patients who received the G-Branch endograft for type Ia endoleak after EVAR at our institution between November 2021 and July 2024 were retrospectively reviewed. The G-Branch endograft system, which has a hybrid configuration comprising 2 inner branches for the celiac axis and superior mesenteric artery and 2 outer branches for the renal arteries, was used in all cases. Follow-up assessments were scheduled at 1, 6, and 12 months after the index procedure and annually thereafter.

RESULTS

Technical success was achieved in all cases. No deaths, cases of spinal cord ischemia, or other major adverse events occurred within 30 days postprocedure. No type Ia or type III endoleaks were detected during a median follow-up of 24 months. One patient (14.3%) underwent reintervention for type II endoleak. All target vessels remained patent without significant stenosis. No instances of dilatation of the aneurysm sac were observed.

CONCLUSION

The G-Branch endograft represents a promising option for management of type Ia endoleak after EVAR, with favorable short-term to medium-term outcomes. A large multicenter study is warranted to confirm our findings.