Immediate and intermediate-term results of optical coherence tomography guided atherectomy in the treatment of peripheral arterial disease: Initial results from the VISION trial.
Cawich, et al. Cardiovasc Revasc Med. 2016 Oct - Nov;17(7):463-467
Long-term patency rates for percutaneous peripheral arterial interventions are suboptimal. Optical coherence tomography (OCT) guided atherectomy may yield superior patency by optimizing plaque removal while preserving the tunica media and adventitia.
The VISION study is a multicenter prospective study of patients with peripheral arterial disease undergoing OCT guided atherectomy with the Pantheris™ device. In 11 patients enrolled in a single center, we report procedural and clinical outcomes, at 30 days and 6 months.
The mean age was 63±11years and 73% (n=8) were men. The target lesion was in the superficial femoral artery in 82% (n=9) of the patients. Mean stenosis severity was 87%±10% and mean lesion length was 39±31mm. Procedural success was observed in all patients with no device related complications. Mean post-atherectomy stenosis was 18%±15%. Almost all excised tissue consisted of intimal plaque (94%). At 30days, significant improvements in Rutherford class, VascuQoL scores and ABI were observed, 0.9±0.8 vs. 3.1±0.7 (p=0.01), 4.9±1.9 vs. 3.6±1.5 (p=0.03) and 1.04±0.19 vs. 0.80±0.19 (p<0.01) respectively. At 6months, there were significant improvements in Rutherford class (1.0±1.0 vs. 3.1±0.7, p=0.01) and ABI (0.93±0.19 versus 0.80±0.19, p=0.02) but not in VascuQoL scores (3.7±1.4 versus 3.6±1.5, p=0.48). Target lesion revascularization occurred in 18% (n=2) of the patients.
OCT guided atherectomy resulted in high procedural success, no device related complications and encouraging results up to 6months. Histological analysis suggested little injury to the media and adventitia. Larger studies are needed to confirm the efficacy of this approach.
KEYWORDS: Atherectomy; Optical coherence tomography; Peripheral arterial disease