New FDA-Approved ‘Micra AV’ Pacemaker Hailed Among the Most Important Cardiac Innovations in Recent Years, Allowing Heart Chambers to Beat in Sync Through Minimally Invasive Procedure
Photo: Bud Glick
NYU Winthrop Hospital today announced that in one of the first-ever procedures of its kind, physicians successfully implanted into a patient a new generation of leadless pacemaker. This new cardiac pacemaker, called the Micra™ AV, was recently approved by the U.S. Food and Drug Administration (FDA) in late January 2020.
A cardiac pacemaker is a small device placed inside the heart or chest to help control abnormal heart rhythms, using electrical pulses to prompt the heart to beat at a normal rate. The new Micra™ AV provides electrical pulses that coordinate the top and bottom chambers of the heart—the atrium and ventricle, or AV—to beat in sync, resulting in a significant advantage over current leadless pacemakers that do not provide AV synchrony.
The new device is implanted nonsurgically—through a sheath placed in the leg—rather than requiring chest surgery, as is often the case with traditional pacemakers. Ƶ’s Heart Rhythm Center in New York City led the clinical trials that helped pave the way for this important innovation in cardiac pacing.
“This revolutionary cardiac technology will provide patients benefits far beyond that of contemporary pacemakers—and without requiring surgery,” said Joseph J. Germano, DO, director of cardiac electrophysiology at NYU Winthrop Hospital, who performed the Micra™ AV procedure at the hospital. “This new FDA-approved implant is minimally invasive, is only the size of a vitamin placed in the heart, and requires no wire leads that may be prone to malfunction as is the case with traditional pacemakers. This implant is among one of the most important cardiac medical advancements in recent years.”
Pacemakers are used to treat conditions such as arrhythmias, when the heart beats too fast, too slow, or with an irregular rhythm that compromises the heart’s inability to pump enough blood to the body. Traditional pacemakers require surgery to create a pocket in the upper chest for a battery with wire leads into the heart. The Micra™ AV, instead, is a leadless pacemaker implanted through a sheath in the leg and fed up to the heart, where it is placed. Studies have shown that the Micra™ AV results in a 63 percent reduction in major complications compared to traditional pacemakers—especially complications such as broken wires.
NYU Winthrop’s first-ever patient was an 89-year-old woman.
Added Michael Spinelli, MD, associate director of cardiac electrophysiology at NYU Winthrop Hospital, “The trials led by Ƶ Health illustrate one of the most important missions of top-tier medical institutions, delivering cutting-edge ‘bench-to-bedside’ technology that changes the paradigm of healthcare delivery and improves the quality of patient care.”
Micra™ AV, produced by Medtronic (NYSE:MDT), detects the mechanical movement of a beat in one chamber of the heart—the atrium—and then paces another chamber where the Micra™ AV device is implanted—the ventricle—so the atrium and ventricle beat in synchrony.
Larry A. Chinitz, MD, director of cardiac electrophysiology at the Heart Rhythm Center at Ƶ Health, led the MARVEL 2 clinical study, which led to the FDA approval of the Micra™ AV.
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