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OCT catheter yielded positive results in SFA CTOs
A new optical coherence tomography catheter for crossing superficial femoral artery chronic total occlusions after guidewire failure is a safe, efficient and effective tool, researchers have found.
For the study, researchers tested the Ocelot catheter (Avinger) in a prospective, multicenter, market preference testing study with 33 patients (mean age, 70 ± 9 years; 62% male) at three European centers. All patients had confirmed CTO of their superficial femoral artery (SFA). Patients were treated between Sept. 28 and Dec. 9, 2011.
In all of the patients, the Ocelot crossed 94% of CTOs, allowing guidewire placement in the distal true lumen. There were no adverse safety events when treating any of the lesions. When compared with a similar non–OCT-guided CTO crossing catheter (Wildcat, Avinger), procedural time and contrast dose were significantly reduced (P<.0001).
Overall, researchers found physician feedback on the catheter performance to be positive, with an 87% average rating of excellent or good across the seven catheter categories.
“The Ocelot catheter ... represents the first time that OCT has been incorporated into the distal tip of a peripheral CTO crossing catheter,” the researchers wrote. “With an additional axis of imaging, Ocelot and OCT provide interventionalists with a safe, reliable and reproducible tool for intraluminal CTO revascularization and limb salvage.”
Disclosure: Schwindt reports no relevant financial disclosures.