Atrial Fibrillation Symptoms and Signs to Watch For

Atrial fibrillation (AFib) is a common heart rhythm disorder characterized by irregular and often rapid heartbeats. In normal circumstances, the heart beats in a steady, rhythmic pattern. However, individuals experiencing AFib may notice an irregular pulse when checking arteries in areas such as the abdomen, groin, or wrist—especially in people who are slim. If this irregularity is accompanied by a sensation of heart palpitations or fluttering, AFib may be occurring.

Key Signs of Atrial Fibrillation

One of the hallmark signs of AFib is known as the "irregularly irregular" heartbeat. This means the heart rate varies significantly, sometimes exceeding 200 beats per minute or dropping below 50 beats per minute. This inconsistency is a key indicator for diagnosing atrial fibrillation.

Heart Sounds and Pulse Discrepancy

In addition to irregular heartbeats, patients may exhibit fluctuating heart sounds, where the intensity of the heartbeat alternates between strong and weak. Another notable sign is a discrepancy between the heart rate and the pulse rate. For example, a person may have a heart rate of 105 beats per minute, but their pulse may only register 98 beats per minute. This difference, known as pulse deficit, occurs because some heartbeats are too weak or too rapid to produce a detectable pulse wave.

Why Early Detection Matters

Recognizing these signs early can be crucial for effective treatment and prevention of complications such as stroke or heart failure. If you or someone you know experiences unexplained heart palpitations, fatigue, dizziness, or shortness of breath, it's important to seek medical evaluation promptly.