March 11, 2016
MEDICAL UNIVERSITY of SOUTH CAROLINA
Vol. 34, No. 26
Inside MUSC leads nation with first use of new MRI-safe defibrillator MEulti xcEllEncE -cEntER DinRug Action tRiAl
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By Helen AdAms adamshel@musc.edu
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hen Lucille Robinson woke up in a recovery room at MUSC, she had a big smile on her face. “The first thing I’m going to do is go to church,” the Beaufort woman said. She should be able to that a lot more easily now that she’s become the first person in the country to get a new kind of heart defibrillator. Not only will it do a better job of helping her heart than her old device did, but it also won’t cause problems if she needs a magnetic resonance imaging scan. The cardiac resynchronization therapy defibrillator is called Amplia. MUSC cardiologist Michael Gold, M.D., performed the procedure on Robinson. He had good reason to think the implanted CRT defibrillator would work well. “I was the principal investigator of the worldwide trial of the first MRI–safe implantable cardioverter defibrillator, which was approved by the Food and Drug Administration last year. The CRT is an extension of the ICD device, so it didn't require any implants before U.S. approval.” His experience made him a natural choice to lead the country in using the new CRT device. CRT defibrillators are used in people whose hearts are damaged from heart attacks, high blood pressure or other causes. Robinson already had an implantable cardioverter defibrillator, or ICD, a batterypowered device that keeps track of the heart rate and delivers a shock if needed. But it wasn’t enough. Robinson’s son said she was so sick that it scared him. His mom, 73, was passing out and had to go to the emergency room several times. She recently had to be given intravenous medicine to
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photo by Dawn Brazell, brazell@musc.edu
Lucille Robinson recovers from surgery with the help of her daughter, Leotha Wilkins. Robinson was the first person in the country to get the new Amplia
This image from Medtronic shows the MRI-safe CRT defibrillator.
remove fluid from her body. Gold said Robinson needed to be upgraded to the CRT ICD. While an ICD has one or two wires going into the heart, the CRT adds a third to help the two sides of the heart stay in rhythm and pump more efficiently. “A CRT ICD senses the heartbeat and paces both sides of the heart,” Gold said. “When dangerous fast or slow heart rates develop, it can pace or shock the heart to restore normal heart rates.” Best of all, he said, with the new device, Robinson can safely get MRI scans, which use magnetic fields and radio waves to create images of the inside of the body. Those images
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