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The science of pacemakers

June 18, 2013

Everyone has natural pacemakers. Known as the sinoatrial node, this bundle of neurons sends out electric signals at regular intervals, hence causing the heart to beat at 60 to 100 beats per minute. This system, more commonly known as the cardiac conduction system, keeps a person’s heart beating throughout the day.



But it is not always the case that the sinoatrial node will work normally. A myriad of medical conditions can cause it to act aberrantly, which can result to arrhythmia, a potentially fatal condition characterized by an irregularity in the rate or rhythm of the heartbeat.

On the occasion that the sinoatrial node fails to perform its function and the condition is already beyond pharmacologic remedy, doctors may advise their patients to have artificial pacemakers installed.


Image Source: mediacenter.dw.de


Artificial pacemaker systems are usually made up of a battery, a computerized generator, and electrodes (wires with sensors). The battery provides the needed electrical power to run the generator, while the electrodes connect the system to the heart. These electrodes detect the heart’s electrical activity, which then sends data through the electrodes back to the computer which is built in the generator.

If the computer detects an abnormal heart rhythm or rate, it will order the generator to send electrical pulses which will help normalize the heart activity. Some models of artificial pacemakers have the ability to monitor the blood temperature, breathing, and other factors, and adjust the heart rate/rhythm to activity changes.


Image Source: papermed.com


Need an artificical pacemaker installed but couldn’t afford it at domestic prices? Log on to Satori World Medical’s website to learn how you can undergo the procedure without depleting your savings.

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