Bigeminy, as observed in an electrocardiogram (ECG), refers to a specific type of irregular heart rhythm. It's characterized by a pattern where every other heartbeat is a premature or extra beat, as stated in the reference provided. The heartbeats situated between these extra ones appear normal.
Understanding Bigeminy
To further understand bigeminy, consider the typical way the heart works:
- Normal Heartbeat: In a healthy heart, electrical signals travel smoothly from the upper chambers (atria) to the lower chambers (ventricles), causing the heart to contract and pump blood.
- Premature Contraction: In bigeminy, an extra, early electrical signal arises, triggering a contraction prematurely.
- Bigeminy Rhythm: This premature contraction then alternates with a normal heartbeat, creating a 'two-beat' pattern (normal beat followed by an extra beat).
Key Characteristics of Bigeminy
Here are some key features of bigeminy:
| Feature | Description |
|---|---|
| Rhythm Pattern | Every other beat is a premature contraction. |
| Normal Beats | The beats occurring between the premature ones are regular. |
| Premature Beats | The extra beats are earlier than they should be. |
| Electrical Signal | The issue stems from an extra electrical signal, not the typical pathway. |
Why Does Bigeminy Occur?
While the exact causes of bigeminy can be varied, common triggers include:
- Electrolyte imbalances.
- Stress and anxiety.
- Heart conditions like coronary artery disease.
- Medications or drug use.
- Excessive caffeine or alcohol intake.
Clinical Implications
Bigeminy can occur in individuals with and without underlying heart disease. It may not always cause noticeable symptoms, but in some people, it can cause:
- Palpitations (a sensation of irregular heartbeat).
- Lightheadedness or dizziness.
- A feeling of a skipped heartbeat.
Note: If you experience any of these symptoms, it is important to consult with a healthcare professional for proper evaluation and guidance.
