What arrhythmia is characterized by a rapid, irregular heartbeat often seen in older adults?

Atrial fibrillation is characterized by a rapid and irregular heartbeat, which stems from chaotic electrical signals in the atria leading to disorganized atrial contraction. This arrhythmia is particularly prevalent in older adults due to various factors such as increased cardiovascular risk, structural changes in the heart, and the cumulative effects of age-related changes in the conduction system.

Atrial fibrillation often presents without noticeable symptoms but can lead to significant complications, such as an increased risk of stroke and heart failure. In this condition, the heart rate can vary widely and the rhythm is often irregularly irregular, which differentiates it from other arrhythmias. This distinct clinical presentation is a key aspect of its identification and helps guide management decisions in patients, particularly in the older population who are more susceptible to this condition.