Long-term results of endovascular therapy with nitinol stent implantation for TASC II A/B femoro-popliteal artery lesions: 4 years' experience.
BACKGROUND
Although in clinical practice endovascular therapy (EVT) with a nitinol stent for femoro-popliteal artery (FPA) lesions has been widely applied for TASC II A/B lesions, primary patency beyond 2 years remains unknown, as do the factors associated with restenosis.


RESULTS
A prospectively maintained database that included 189 limbs treated with nitinol stents for de novo TASC II A/B FPA lesions was retrospectively analyzed. The outcomes were overall primary and secondary patency during the follow-up period and predictors associated with restenosis. Primary patency overall with nitinol stents was 84%, 82%, 80%, 80% and secondary patency was 96%, 93%, 90%, 90% at 12, 24, 36, 48 months, respectively. Primary patency was not statistically different between the 2 types of nitinol stents (Luminexx vs S.M.A.R.T. Control. stent, P=0.37) during follow-up period. From the multivariate analysis, administration of cilostazol was the strongest independent factor associated with restenosis (P=0.0012).


CONCLUSIONS
Nitinol stent implantation for TASC II A/B FPA lesions is suitable and durable in sustaining freedom from restenosis through 4 years of follow-up.
Iida
Osamu
O
Cardiovascular Center, Kansai Rosai Hospital, Amagasaki. osa-iida@nifty.com
Nanto
Shinsuke
S
Uematsu
Masaaki
M
Ikeoka
Kuniyasu
K
Okamoto
Shin
S
Dohi
Tomoharu
T
Fujita
Masashi
M
Nagata
Seiki
S
D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D000800:Angioplasty, Balloon; D001157:Arterial Occlusive Diseases / Q000601:surgery*; D005260:Female; D005263:Femoral Artery / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000601:surgery*; D012189:Retrospective Studies; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D014654:Vascular Patency
D000497:Alloys; C013616:nitinol