Understanding Bradycardia and the Micra Leadless Pacemaker

Bradycardia is a condition where the heart beats too slowly—typically fewer than 60 beats per minute (BPM) in adults. While this can be normal for healthy individuals, such as athletes or during deep sleep, a consistently slow heart rate may cause fatigue, dizziness, or even fainting, especially in older adults. When bradycardia leads to symptoms or affects heart function, treatment may be necessary to maintain a healthy rhythm.

A modern solution is the Micra™ leadless pacemaker —a breakthrough in cardiac pacing technology. Unlike traditional pacemakers, the Micra is a tiny, self-contained device that’s implanted directly into the heart without the need for leads (wires) or a surgical pocket under the skin.

This minimally invasive device monitors the heart and delivers small electrical impulses when needed, helping maintain a normal heart rate. Because it’s leadless, the risk of infection or lead-related complications is reduced, and recovery time is often quicker.