In addition, he noted, CFA endarterectomy for atherosclerotic lesions is a mature, well-established operation with an excellent track record for safety and durability. Dr. Siracuse’s review of procedural safety in 1,513 patients in the American College of Surgeons National Surgical Quality Improvement Project database during 2007-2010 showed a 30-day mortality of 1.5% and a 7.9% rate of major or minor complications (Vasc Endovascular Surg. 2014 Jan;48[1]:27-33).
In contrast, his review of 1,014 patients who underwent nonemergent endovascular CFA interventions for CFA stenosis without acute limb ischemia in the Vascular Quality Initiative registry demonstrated a 1-year patency rate of 85.3%, significantly lower than historically observed patency rates for endarterectomy. The 30-day mortality rate of 1.6% associated with endovascular interventions was essentially the same as in his earlier analysis of endarterectomy in the ACS NSQIP database, and the average 1.5-day hospital length of stay was shorter than with open surgery. Of considerable concern, however, stent implantation, which was performed in 35% of the endovascular interventions, was an independent predictor of amputation or death, with an associated 195% increased risk (J Vasc Surg. 2017 Apr;[4]:1039-46).
The travails of TECCO
The 17-center French TECCO study randomized 117 patients with de novo CFA atherosclerotic lesions to treatment via self-expanding stents or open surgery. A total of 98 participants were Rutherford stage 3, making TECCO primarily a study of claudicants. The primary outcome – the 30-day combined rate of morbidity and mortality – occurred in 26% of the surgical patients, a significantly higher rate than the 12.5% in the stent population. After a median follow-up of 24 months, the rates of primary patency, target lesion and extremity revascularization, and sustained clinical improvement were similar in the two groups (JACC Cardiovasc Interv. 2017 Jul 10;10[13]:1344-54).
The TECCO findings were hailed by endovascular therapy partisans as a big win. However, closer examination tells a different story, according to Dr. Siracuse.