Understanding the technology
About This Technology.
Rotational atherectomy, or rotablation, is a technique for shaving calcified plaque inside the coronary arteries, the blood vessels of the heart. A small diamond-coated burr spins at high speed and grinds calcium into very fine particles. It is used before a balloon and stent (a small mesh tube) are placed, so they can pass through and expand properly.
What Is Rotational Atherectomy?
Over time, plaque in the walls of the coronary arteries can build up calcium and become as hard as stone. This kind of plaque can get in the way of percutaneous coronary intervention (PCI), a procedure that opens narrowed heart arteries through a catheter. A balloon may not inflate fully, and a stent that does not expand well is more likely to cause problems later.
Rotational atherectomy uses a small, olive-shaped burr coated with diamond particles. The burr spins at high speed over a very thin guidewire. Hard plaque is ground into fine particles, generally smaller than red blood cells, which are then carried away by the bloodstream. The healthy, flexible artery wall tends to move aside, so it is largely spared.
When Doctors Use It
- Heavy calcium is seen on coronary angiography or on imaging from inside the artery (IVUS or OCT).
- A balloon cannot cross the narrowing or cannot expand fully.
- A calcified narrowing in a large artery needs a well-expanded stent.
The technique is not used routinely for every stent procedure. When a blockage contains a lot of blood clot or the artery wall is torn, doctors generally choose another approach.
What You Will Experience
Rotational atherectomy is performed in the Cath Lab as part of PCI. You stay awake with local anesthetic at the wrist or groin and may receive a mild sedative. The doctor inserts a catheter, places a special guidewire, and then runs the burr in several short passes while watching the X-ray images and your heart rhythm. Once the plaque has been shaved, the balloon and stent are placed as in a standard PCI. Some people feel brief chest discomfort during the shaving; let the team know if you do.
Risks and Limitations
Like other coronary procedures, rotational atherectomy carries risks. Particles or artery spasm can temporarily slow blood flow, and the heart rate can drop, so in some cases a temporary pacemaker is placed. Less common risks include a tear or leak in the artery wall and a burr becoming stuck. There are also the general risks of catheterization, such as bleeding at the puncture site and reactions to contrast dye. Your doctor will explain the benefits and risks for your situation before the procedure.
The Decision Rests with Your Care Team
Whether to use rotational atherectomy, or another technique such as a high-pressure specialty balloon, is decided by an interventional cardiologist based on the location, length, and shape of the calcium. After the procedure, you are cared for and monitored like other PCI patients, including taking antiplatelet medication, which helps prevent blood clots, as your doctor advises.
Clinical use
Uses and Benefits.
Whether this technology suits your condition is decided by a doctor after an evaluation.
- Shaving heavily calcified plaque in the coronary arteries before stenting
- Opening a path for a balloon or stent that cannot cross a narrowing
- Helping a balloon and stent expand fully in a stiff artery wall
- Part of planned PCI for complex coronary artery disease
Benefits for the Doctor's Assessment
Targets the Hard Parts
The burr grinds stiff, calcified plaque while the flexible artery wall tends to move aside. This principle is called differential cutting.
Prepares the Way for the Stent
Smoothed plaque makes it easier for a balloon and stent to cross the narrowing and expand. Poor stent expansion is linked to a higher risk of re-narrowing and clotting inside the stent.
Part of PCI, No Open Surgery
Rotational atherectomy is done through the same catheter route as PCI and under local anesthetic, so no chest incision is needed.
Used Selectively
The ESC and ACC/AHA/SCAI revascularization guidelines place this technique as an option for selected, heavily calcified narrowings, not for every stent procedure.
Brief Technical Information
- Procedure type
- Preparation of calcified plaque during percutaneous coronary intervention (PCI)
- How it works
- Diamond-coated burr spinning at high speed over a guidewire
- Image guidance
- X-ray coronary angiography with contrast dye
- Radiation
- Yes, from X-rays during the procedure
- Anesthesia
- Local anesthetic at the puncture site, with mild sedation if needed
- Service location
- Cath Lab, Coronary Intervention Procedures
