Atrial Fibrillation, Causes, Signs and Symptoms, Treatment, and Prevention

Atrial Fibrillation


Atrial fibrillation is a medical condition in which the suffering person experiences a rapid and irregular heart rate that might elevate the chances of getting a heart failure or strokes. The chances of a person having atrial fibrillation increase the risk of attaining other complications about the heart. In the case of atrial fibrillation, what happens is that the two upper atria or chambers start beating so fast, and the beating is also irregular. The coordination between the upper chambers of the heart, i.e., atrium, and the lower chambers, i.e., ventricle, does not perform optimal functions in the patients with atrial fibrillation.

The most common symptoms of atrial fibrillation present in most patients include shortness of breath, weakness, and heart palpitations. Moreover, the symptoms of atrial fibrillation come and go like the depression episodes, and sometimes an emergency treatment is a must. While the attacks of atrial fibrillation do not pose any life-threatening health issues, but the doctors consider it a severe medical condition. One of the major health concerns with atrial fibrillation includes the development of blood clots within the upper chambers of the heart.

The blood clots resulting due to atrial fibrillation have a great potential to circulate throughout the blood vessels and cause the blockage of blood flow. The blocking that happens in the flow of blood through blood vessels as a result of atrial fibrillation leads to heart ischemia, i.e., blocking the blood flow to the heart. The treatments are available for atrial fibrillation to avoid any heart complications in the patients. The medical professionals suggest incorporating certain inventions to change the electrical system of the heart or use some medications to make sure that there is a smooth flow of blood.

115 Most Probable Atrial Fibrillation Causes

Heart attack

The definition of atrial fibrillation allows us to understand that there is a rapid and irregular heart beating, which mostly happens when the two upper chambers of the heart do not beat in rhythm with the two lower chambers of the heart. The upper chambers of the heart, i.e., atria, go through chaotic electrical signals which interfere with the synchronization of the atria to the ventricles. As a result, the heartbeats are irregular and faster than the normal rate, and a person can experience the vibrations in his or her chest. The normal range for heart rate is from 60 to 100 beats per minute, which enormously exceeds from 100 to 175 beats per minute, which is very easy to experience by the patient.

Moreover, it is very important to understand the anatomy of the heart muscles to understand the actual cause of atrial fibrillation as we are familiar with the fact that our heart consists of four chambers with the two upper chambers known as the atria. In comparison, the two lower chambers are known as ventricles. There is a group of cells present in the upper right chamber of the heart, i.e., the right atrium, and this group of cells are known as the sinus node. The function of the sinus node is the production of signals which normally initiate every single heartbeat. Under normal conditions, the electrical signal from the sinus node moves through the two upper chambers of the heart, and then through a connecting passage, i.e., atrioventricular (AV) node travels from the upper to lower chambers of the heart.

It is through the traveling of the signals around the chambers of the heart, which causes the heart muscles to contract and initiate the blood circulation from the heart to other body organs. While in the case of atrial fibrillation, the electrical signals traveling through the upper chambers of the heart become irregular and thus disrupting the whole process of heart contraction. The electrical signal starts bombarding on the atrioventricular (AV) node to pass through the atria and reach the ventricles. To keep pace with faster-moving atria, the ventricles strive hard to beat rapidly but do not reach the pace of chaotic atria, and thus the signals do not transduce properly.

Any damage or abnormalities happening to the heart’s anatomy are the most probable causes of atrial fibrillation. The most probable causes that play a role in the occurrence of atrial fibrillation are:

Heart attack

A heart attack might become a cause of atrial fibrillation and thus making the heart to beat irregularly. When the heart goes under an attack, and if a coronary artery suffers the damage from this heart attack, then there is an abnormal function of the coronary artery. The coronary artery involved in the heart attack is not able to supply enough amount of oxygen-rich blood to the atria of the heart, which results in the lack of blood circulation to the atrial tissues. The lack of blood flow to the atrial tissues damages the atria and leads to the chaotic heart beating.