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Causes of a rapid heartbeat, including an electrical disturbance of the heart


Tachycardia is the medical term for a heart rate of more than 100 beats per minute. There are many arrhythmias that can sometimes cause a rapid heart rate. It is normal for your heart rate to rise during exercise or in response to stress, shock, or The disease, according to the mayoclinic website, in some cases, tachycardia may not cause any symptoms or complications, but if left untreated, tachycardia can disrupt normal heart function and lead to serious complications, including sudden cardiac arrest or death.


Causes of a fast heartbeat

There are several different types of tachycardia, grouped according to the part of the heart that is responsible for the rapid heart rate and the cause of the abnormally fast heartbeat, including:



1: Atrial fibrillation Atrial fibrillation is a rapid heart rate caused by chaotic, irregular electrical impulses in the two upper chambers of the heart (atria), and these signals lead to rapid, uncoordinated and weak contractions in the atria.


Atrial fibrillation may be temporary, but some episodes don't go away unless treated.


2: Supraventricular tachycardia Supraventricular tachycardia is an abnormally fast heartbeat that begins somewhere above the two lower chambers of the heart (the ventricles). It is caused by abnormal circuits in the heart that are normally present at birth and create a loop of overlapping signals.


3: Ventricular tachycardia Ventricular tachycardia is a rapid heart rate that begins with abnormal electrical signals in the heart's lower chambers (ventricles), and the rapid heart rate does not allow the ventricles to fill and contract efficiently to pump enough blood to the body.


4: Ventricular fibrillation Ventricular fibrillation occurs when fast, chaotic electrical impulses cause the lower heart chambers (the ventricles) to quiver instead of pumping the blood needed by the body. This can be fatal if the normal heart rhythm is not restored within minutes with an electrical shock to the heart ( defibrillation).

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