Purpose:
To investigate the midterm outcomes of
subintimal angioplasty in occluded superficial femoral arteries (SFA) and
evaluate the clinical and procedural factors affecting these results.
Methods:
Between April 2004 and April 2012, 150
patients (122 men; mean age 69±10 years) with chronic total occlusions in
the SFA underwent subintimal angioplasty with primary stenting in 172 limbs. The
average lesion length was 22.6±8.5 cm. Stents were routinely implanted at
the proximal entry into the subintimal channel. The primary endpoint was binary
restenosis.
Results:
Technical success was achieved in 161
(94%) limbs; there were no procedure-related deaths or complications
requiring surgery, but distal embolization and arterial perforation occurred in
2 and 4 limbs, respectively. The cumulative freedom from binary restenosis rates
at 1 and 3 years were 77% and 59%, respectively, in the entire
study group. The 96 patients without critical limb ischemia (CLI) had
significantly higher patency rates at 1 and 3 years (84% and 66%,
respectively) than the 54 patients with CLI (66% and 43%,
respectively; p=0.011). Based on multivariate analysis, a larger number
of stents, lower post-procedure ankle-brachial index, and lower body mass index
were each independent predictors of binary restenosis.
Conclusion:
Subintimal angioplasty with routine
stenting at the proximal stump is safe and effective for the treatment of
chronic total SFA occlusions.