BUNCHA SUNSANEEWITAYAKUL, M.D.
Medicine - Cardiology (Heart)
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Atrial Fibrillation (AF), commonly known as AF, is a condition where the heart beats rapidly and irregularly. During AF, the two upper chambers of the heart beat irregularly and out of sync with the lower chambers, causing inefficient blood circulation to various parts of the body. This results in symptoms such as palpitations, shortness of breath, and weakness, which increase the risk of stroke, heart failure, and other heart diseases.
The heart consists of four chambers: two upper and two lower. In the upper right chamber, there is a group of cells called the Sinus Node (SA Node) that generates electrical impulses, which cause the upper chambers of the heart to contract. These impulses then pass through the Atrioventricular Node (AV Node) between the upper and lower chambers. In AF, electrical impulses are sent to the lower chambers, causing them to beat irregularly.
When these impulses exceed 350 per minute, the AV Node cannot transmit all the signals, as it can only handle up to 200 per minute. This overload results in a disruption of the heart's rhythm.
AF symptoms can be categorized into three groups:
The aim of treating AF is to restore normal heart rhythm, control the heart rate, and prevent blood clots.
This type of AF is triggered by external factors such as:
Heart conditions such as coronary artery disease, heart valve disease, or heart failure can trigger AF. In these cases, treatment focuses on addressing the underlying heart condition to prevent further AF episodes. If the root cause cannot be treated, restoring normal heart rhythm becomes challenging.
This type of AF is caused by degeneration of the heart's electrical system. It's similar to an electrical system in a house that has been used for a long time, leading to flickering lights or failures. Treatment for this includes two options:
Patients and their families should consult with a specialist to determine the most appropriate treatment plan. For cases where AF cannot be completely cured, treatment will focus on preventing complications associated with the condition, such as strokes or heart failure. It is important to discuss the treatment approach thoroughly with a healthcare provider to ensure the best possible outcome.
Medicine - Cardiology (Heart)