Sep 072013


Retrograde access helps endovascular surgeons save the legs and feet of people facing amputation

When trying to unclog a drain, plumbers will insert a device from the top and guide it down to push through whatever is causing the blockage. Endovascular surgeons use the same technique when trying to open up the vessels of patients with peripheral artery disease (PAD). However, sometimes the vessels become so hardened that it’s impossible to push through. A new technique called retrograde access now gives surgeons an additional path from below.

There are three arteries that branch off into smaller arteries and supply blood to the legs and feet,” said Dr. Hosam El-Sayed, an endovascular surgeon with Houston Methodist DeBakey Heart & Vascular Center. Over time, plaque develops in the walls of the arteries and completely blocks blood from flowing to the lower extremities. These patients can develop severe conditions such as non-healing sores or gangrene and could eventually face amputation.

Retrograde access is a delicate procedure that allows surgeons to go through arteries in the foot and work their way upward. El-Sayed says this procedure is not for everyone with PAD, only those complex patients with heavily-calcified arteries. It’s seen in many people with severe diabetes. In those patients, it is not possible to open up these arteries by the regular procedure coming from above.

During this procedure, we access those blocked arteries both from the foot and from the top of the leg through the groin and meet in the middle,” El-Sayed said. “Once that occurs, we can open the vessels with a balloon, a stent, or we can shave the plaque that has built up over time and free blood flow to the legs and feet.”

El-Sayed says smoking puts people at highest risk for PAD, but diabetes, high blood pressure, high cholesterol, kidney failure and obesity are all contributing factors.

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