Essay on Types And Functions Of A Leaded Single Chamber Pacemaker

1626 Words Nov 22nd, 2016 7 Pages
All heartbeats consist of a mechanical component and an electrical component. The heartbeat is created by cardiac depolarization caused by electrical currents that induce muscle contraction. The electrical component of the heartbeat begins in the Sinoatrial (SA) Node and its function is to send electrical impulses that stimulate your heart to beat, and these impulses induce the atria to contract. As the atria contract, the impulse moves on to the Atrioventricular (AV) node which leads the ventricles to contract (A). A pacemaker becomes necessary when the heart suffers from arrhythmia, a condition of irregular heartbeats, and is unable to contract at a rate deemed sufficient to meet the metabolic needs of the patient. Bradycardia is a specific type of arrhythmia where one’s heart rate is slower than normal, and it serves to be the leading cause for single-chamber pacemakers resulting in the implantation of more than 600,000 devices annually (B). Innovations to the components and functions of a leaded single-chamber pacemaker have paved the way to the creation of the Micra Transcatheter Pacing System, a device that has changed the world of pacing.
The role of a pacemaker in a person with an irregular heartbeat is to monitor the electrical activity of the heart, apply therapy to the heart when it is not functioning properly, and record diagnostic information about the patient. Specifically, a single-chamber pacemaker is used when only one chamber of the heart is unable to…

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