In the context of the heart, AF stands for Atrial Fibrillation. It is the most common type of arrhythmia (irregular heartbeat) that persists for more than a few seconds.
Understanding Atrial Fibrillation (AF)
Atrial fibrillation (AF) is a heart condition characterized by an irregular and often rapid heart rate. This irregularity stems from a distortion of the electrical messages that normally control the steady, rhythmic beating of the heart, which we commonly refer to as the 'heartbeat'.
Here's a quick overview of what AF means:
| Aspect | Description |
|---|---|
| Meaning | Atrial Fibrillation |
| Type | An arrhythmia (a condition where the heart beats in an irregular fashion) |
| Cause | Distortion of electrical signals controlling the heart's rhythm |
| Prevalence | The most common type of arrhythmia that lasts more than a few seconds |
How AF Affects the Heart's Rhythm
Normally, the heart's electrical system generates precise impulses that ensure the atria (the heart's upper chambers) contract in a coordinated manner, effectively pumping blood into the ventricles (the lower chambers). In AF, these electrical signals become chaotic, leading to rapid and disorganized electrical activity in the atria. This disorganization prevents the atria from contracting effectively, causing them to quiver or "fibrillate" instead of beating steadily.
This chaotic electrical activity is then transmitted to the ventricles, but in an irregular and uncontrolled way, resulting in the characteristic irregular and often fast pulse felt in individuals with AF.
Key Characteristics of AF
- Irregular Heartbeat: The most defining feature of AF is an erratic pulse, where the heart does not maintain a steady rhythm.
- Electrical Disruption: It originates from a disturbance in the heart's natural electrical signaling system.
- Common Arrhythmia: AF is recognized as the most prevalent form of persistent arrhythmia.
For more detailed information on atrial fibrillation, you can refer to reputable health resources such as the Better Health Channel.
