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Rotational Atherectomys

Overview:



Rotational Atherectomy:




This procedure is normally reserved for the treatment of highly calcified areas in the coronary arterial system.

This specialized procedure involves the insertion of a rotating catheter at up to 180,000 rpm. The obstructing fibrous plaque is pulverized into minute micro particles and washed away into the bloodstream.

Typically, after removal of the device, a balloon or stent procedure follows as previously described.

Directional Atherectomy:

The catheter used in this procedure has a hollow cylinder on the tip with an open window on one side and a balloon on the other.

When the catheter is inserted into the narrowed artery, the balloon is inflated, pushing the window against the fatty matter.

A blade (cutter) within the cylinder rotates and shaves off any fat that protruded into the window. The shavings are caught in a chamber within the catheter and removed.

This process is repeated as needed to allow for better blood flow. Like rotoblation, this procedure is rarely used today.