Branched iliac bifurcation: 6 years experience with endovascular preservation of internal iliac artery flow

A, First generation iliac bifurcation device. B, Second generation iliac bifurcation device.

Angiography through the cross-over sheath confirms satisfactory position and patency of the internal iliac side branch.

A, Bilateral first generation iliac bifurcation devices incorporated in a Zenith Trifab endograft. B, Final angiography showing patent both internal iliac arteries.

Kaplan-Meier estimate of the probability of iliac bifurcation device (IBD) side branch patency (both devices included in the analysis). Analyzed on an intention to treat basis, cumulative IBD side branch patency was 87.3% at 60 months.

Kaplan-Meier estimate of the probability of iliac bifurcation device (IBD) patency (first vs second generation IBD). The Log-rank comparison test for the equality of patency times across groups (first vs second generation IBD) showed no statistically significant difference between them (P = .774)