Understanding 3rd Degree AVB
3rd degree AVB, also known as complete heart block, is a serious heart condition where the electrical signals from the upper chambers of the heart (atria) fail to reach the lower chambers (ventricles). This disruption in the heart's rhythm can lead to a slow heart rate (bradycardia) and potentially life-threatening symptoms.
How it Works
- Normal Heartbeat: The heart's natural pacemaker, the sinoatrial (SA) node, generates electrical impulses that travel through the heart, causing the atria and ventricles to contract in a coordinated manner.
- 3rd Degree AVB: In this condition, the electrical signals from the SA node are completely blocked from reaching the ventricles. The ventricles then rely on an alternative pacemaker, usually located in the lower part of the heart, to initiate their own heartbeat.
- Consequences: This results in a disconnect between the atrial and ventricular rhythms, leading to a slow and irregular heartbeat.
Symptoms
Symptoms of 3rd degree AVB can vary depending on the severity of the block and the individual's overall health. Some common symptoms include:
- Fatigue
- Dizziness
- Fainting
- Shortness of breath
- Chest pain
Treatment
Treatment for 3rd degree AVB typically involves:
- Pacemaker: A pacemaker is a small device implanted under the skin that sends electrical impulses to the heart to regulate its rhythm.
- Medication: In some cases, medications may be used to slow the heart rate or improve its function.
Importance of Prompt Diagnosis and Treatment
3rd degree AVB is a serious condition that requires prompt diagnosis and treatment. Early intervention can help prevent complications and improve the patient's overall health.
