What is supraventricular ectopic activity?

Supraventricular ectopic activity (SVEA) refers to abnormal electrical impulses that originate from areas above the ventricles in the heart, particularly the atria (upper chambers of the heart). These impulses can cause premature heartbeats or disruptions in the heart's normal rhythm.

There are different types of SVEA, classified based on their point of origin within the atria. Some common types include:

1. Atrial Premature Complex (APC): An APC is an occasional extra heartbeat that originates from the atria prematurely, interrupting the normal heart rhythm.

2. Atrial Tachycardia (AT): AT is a rapid heart rhythm that starts in the atria and typically involves a series of three or more consecutive rapid heartbeats.

3. Atrioventricular Nodal Reentry Tachycardia (AVNRT): AVNRT is a type of supraventricular tachycardia that occurs when an abnormal electrical pathway forms between the atrioventricular node and surrounding atrial tissue.

4. Atrioventricular Reciprocating Tachycardia (AVRT): AVRT is another form of supraventricular tachycardia that involves an additional electrical pathway (accessory pathway) connecting the atria and ventricles.

SVEA can manifest through a variety of symptoms, including:

- Palpitations: A sensation of a racing or skipped heartbeat.

- Chest discomfort: Discomfort or pain in the chest that may resemble angina.

- Lightheadedness or dizziness.

- Shortness of breath.

- Fatigue or weakness.

While some instances of SVEA may be occasional and not of significant concern, others can cause bothersome symptoms or indicate underlying heart conditions. Depending on the type and severity of SVEA, treatment options may include lifestyle modifications, medications, catheter ablation therapies, or other interventions recommended by a healthcare professional.