Description: Junctional block refers to a condition in which electrical signals are impeded at the junction of the atria and ventricles of the heart. This interruption in electrical conduction can result in a slowing of the heart rate and, in some cases, arrhythmias. The heart has a complex electrical system that coordinates beats, and the atrioventricular (AV) node plays a crucial role in this process, acting as a bridge between the atria and ventricles. When junctional block occurs, the electrical signal that normally travels from the atria to the ventricles is affected, which can lead to a range of symptoms such as dizziness, fatigue, or even fainting. There are different degrees of junctional block, varying in severity and impact on heart function. Diagnosis is typically made through an electrocardiogram (ECG), which can show characteristic patterns of the condition. Understanding junctional block is essential for cardiologists, as it can be an indicator of more serious underlying issues in the heart’s electrical system.
