Randomized trial of the SMART stent versus balloon angioplasty in long superficial femoral artery lesions: the SUPER study.
OBJECTIVE
To determine whether primary stenting reduces the rate of restenosis compared with balloon angioplasty alone in the endovascular treatment of long superficial femoral artery lesions; and to assess the effect of treatment on quality of life.


METHODS
A total of 150 patients with superior femoral artery occlusion or severe stenosis of 5-22 cm length from 17 UK centers were randomized to either primary stenting with the SMART stent or balloon angioplasty (i.e., percutaneous transluminal angioplasty, PTA). Bailout stent placement was permitted in case of inadequate result from PTA. The primary end point was restenosis measured by duplex ultrasound at 1 year. Quality-of-life assessments were performed by the EuroQol (EQ)-5D questionnaire.


RESULTS
Mean lesion length was 123.0 mm in the stent group and 116.8 mm in the PTA group. A total of 140 (93.3 %) of 150 had total occlusions. At 12 months' follow-up, restenosis measured by Duplex ultrasound was not significantly different between the stent and PTA groups by intention-to-treat or as-treated analyses: 47.2 versus 43.5 % (p = 0.84) and 40.8 versus 46.7 % (p = 0.68), respectively. There were fewer target lesion revascularizations in patients randomized to stenting, but this did not reach statistical significance (12.5 vs. 20.8 %, p = 0.26). There was no difference in the rate of amputation. Patients in both groups reported improved quality of life.


CONCLUSIONS
Primary stenting of long lesions in predominantly occluded superficial femoral arteries does not reduce the rate of binary restenosis compared with balloon angioplasty and bailout stenting. Both treatment strategies conferred a meaningful and sustained improvement to the quality of life of patients with severe superficial femoral artery disease.
Department of Radiology, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK. nicholas.chalmers@cmft.nhs.uk
Nicholas
N
Chalmers
Paul T
PT
Walker
Anna-Maria
AM
Belli
Anthony P
AP
Thorpe
Paul S
PS
Sidhu
Graham
G
Robinson
Mariella
M
van Ransbeeck
Steven A
SA
Fearn
D000368:Aged; D000671:Amputation, Surgical / Q000706:statistics & numerical data; D000800:Angioplasty, Balloon / Q000379:methods*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000628:therapy*; D015897:Comorbidity; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000517:prevention & control; D006801:Humans; D008297:Male; D018579:Patient Selection; D016491:Peripheral Vascular Diseases / Q000000981:diagnostic imaging / Q000628:therapy*; D011788:Quality of Life; D018709:Statistics, Nonparametric; D015607:Stents; D018616:Ultrasonography, Doppler, Duplex; D014654:Vascular Patency