From Deseret News archives:

New system makes heart procedure safer

Published: Sunday, June 22, 2008 12:10 a.m. MDT
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Hearts are racing with excitement this week because of new technology for cardiac patients with irregular heartbeats.

At least two Salt Lake area hospitals — Intermountain Medical Center and St. Mark's Hospital — are introducing a new procedure they believe to be safer and more effective, combining robotics, a 3-D mapping system and joysticks.

Dr. Peter Weiss, a cardiologist with Intermountain Medical Center, performed "stereotaxis" in Salt Lake City on a patient with multiple arrhythmias in the lower chambers on Tuesday. The walls of the lower chambers are not as smooth and more difficult to treat, so this case was more challenging than most. Even so, he was thrilled with the results. He did two more procedures Friday.

"The more I think about it, the more excited I am about it," he said. "I plan to use it on every case I can get my hands on, but where it is really likely to shine is in these more complex cases."

Stereotaxis is a robotic procedure that utilizes magnetic navigation and a 3-D mapping system to create a map of the heart, giving the cardiologist a detailed view of the inside of the heart, both anatomically and electrically.

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A flexible catheter is inserted near the groin. By placing large magnets on the exterior of the patient's body, the doctor is able to use that magnetic field to pull the catheter to the proper location, using less force than the old method of manually pushing a rigid catheter through the body.

This reduces the chance of damaging heart tissue, a rare but possible complication doctors face with manual ablation therapy. And, because the catheter is more flexible, doctors are able to reach areas of the heart that were previously inaccessible.

All of this is done from a computer control room, just a few feet away from where the patient lies. Weiss said one of the key components to this system is the Odyssey, a flat-panel, high-definition monitor that allows the doctor to view the patients vital signs, ultrasounds, X-rays, real-time EKG data and a 3-D image of the interior of the heart — all on one screen. The cardiologist guides the catheter with a joystick, using those images to determine where treatment is needed.

"It is the integration of all the technology in one place that was the most helpful," he said.

The new technology provides an exciting alternative to traditional methods of treating arrythmia.

Recent comments

I understand this sterotaxis equipment will save millions of lives. A...

david | July 9, 2009 at 12:01 a.m.

Can someone with a artificial heart valve have the ablation. Mine is...

sandy | June 23, 2008 at 1:24 p.m.

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