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USís First Cardiac Ablation With FDA Approved Mapping System

by Anjali Aryamvally on May 4, 2018 at 11:18 AM
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USís First Cardiac Ablation With FDA Approved Mapping System

Janet Szilagyi, 78 of Clayton, New Jersey, became the first patient in the US to undergo cardiac ablation after eight years of failed treatment for persistent atrial fibrillation (AF). Cardiac ablation is a procedure in which an electrophysiologist will scar or destroy tissue in the heart that's allowing incorrect electrical signals to cause an abnormal heart rhythm. This is done using an intraoperative imaging and mapping system recently cleared by the Food and Drug Administration (FDA).

Szilagyi is one of the more than three million individuals in the United States who experience AF, a quivering or irregular heartbeat that can lead to a host of dangerous complications and everyday symptoms like shortness of breath, chest pains, and lightheadedness. Szilagyi had undergone several cardiac procedures and tried different medications to treat and/or control her atrial fibrillation , before coming to Penn Medicine in December 2017 to explore other interventions.

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"When I was in atrial fibrillation, it was hard to breathe, and I couldn't walk from here to there without getting tired," said Szilagyi. "I'm usually pretty active; I try to walk every day, but I wasn't able to do that when I was feeling bad. I really wasn't myself." Szilagyi, about six weeks post-op, is home recovering, hoping to get back to her normal activities in the coming months.

"There were many areas of Janet's heart that required ablation, and having access to this new technology allowed us to see more of these regions that we would not have normally been able to, so we could fully address the areas of concerns," said Pasquale Santangeli, MD, an assistant professor of Cardiovascular Medicine, who performed the procedure. "Janet's procedure went well, and she is recovering nicely. I expect that with standard follow-up she will be able to return to normal life without severe threat of AF recurrence."
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In October 2017, the system, AcQMapģ High Resolution Imaging and Mapping System and the 3D Imaging and Mapping Catheter, received FDA clearance for patients with complex arrhythmias who may need a more extensive cardiac ablation procedure in order to treat the irregularities, based on successful European studies.

Santangeli along with David Callans, MD, associate director of Electrophysiology at Penn Medicine, who performed the country's second procedure with this new system just days later, said the new equipment has the potential to greatly improve treatment accuracy. "Preliminary data from European studies suggests that the success rates of ablation for patients with persistent AF have potential to climb by more than twenty-five percent, and even higher for paroxysmal (sporadic AF) patients," said Callans. "We see these as incredibly promising increases, as these are patients who often still experience symptoms of AF even after they've undergone similar cardiac procedures."

Current data shows that ablation procures are successful for patients with persistent AF about 50 to 55 percent of the time, and about 70 to 75 percent of the time in patients with paroxysmal AF. Researchers believe these numbers could increase to 75 percent and upwards of 85 percent, respectively, if the regions responsible for AF maintenance are adequately addressed with this new system.

Previous systems had only allowed physicians to see certain areas or angles of the heart, which proved challenging when trying to treat more complex cases of AF which require more sites to be ablated. With the new system, higher resolution mapping of the heart is available as it combines ultrasound technology with an ability to map every heartbeat to help pinpoint the cause and placement of each complex arrhythmia. Once an ablation treatment occurs in a specific area, physicians are then able to re-map the heart in seconds to see the effects of each single ablation in real-time. When repeated throughout the entirety of the ablation procedure, physicians can eliminate the arrhythmia-causing areas throughout the heart.

"As a next step, Penn Medicine researchers are exploring clinical trial possibilities, and hope to launch our own trials to evaluate the effectiveness of using this system for patients with complex arrhythmias here in the United States," said Callans.



Source: Eurekalert
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