Medtronic Launches World's Smallest Pacemaker To Treat Heart
India Medtronic Private Limited announced the launch of Micra AV - a miniaturized, fully self-contained pacemaker that delivers advanced pacing technology to atrioventricular (AV) block patients via a minimally invasive approach. The device is the first pacemaker that can sense atrial activity without a lead or device in the upper chamber of the heart.

Micra AV pacemaker is a device that is 93 percent smaller than conventional pacemakers. It helps in Bradycardia, a condition characterized by a slow or irregular heart rhythm. At this rate, the heart is unable to pump enough oxygen-rich blood to the body during normal activity or exercise causing dizziness, fatigue, shortness of breath or fainting spells.

Micra AV is a new pacemaker for patients with AV block. The device is attached to the heart with small tines and delivers electrical impulses that pace the heart through an electrode at the end of the device. Micra AV has several additional internal atrial sensing algorithms which detect cardiac movement, allowing the device to adjust pacing in the ventricle to coordinate with the atrium. This allows "AV synchronous" pacing therapy to be provided to patients with this condition.

Micra AV received United States Food and Drug Administration (USFDA) approval based on data from the MARVEL 2 (Micra Atrial Tracking Using A Ventricular accelerometer) study, which evaluated the safety and effectiveness of accelerometer-based atrial sensing algorithms.

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