Junctional Ectopic Tachycardia (JET) is a medical condition characterized by a rapid heart rhythm originating from the atrioventricular (AV) junction, which is an anatomical point in the heart where the atria and ventricles are connected. JET typically occurs in children, although it can also affect adults.
During JET, abnormal electrical signals arise from the AV junction, resulting in a fast heart rate that is greater than 180 beats per minute. These rapid electrical impulses can override the normal pacemaker of the heart, disrupting the natural rhythm and coordination of the heart's contractions.
Symptoms of JET can vary among individuals, but commonly include palpitations, lightheadedness, shortness of breath, fatigue, and chest discomfort. Severe cases of JET can lead to hemodynamic instability and cardiac arrest.
The exact cause of JET is not fully understood, but it is believed to occur due to abnormalities in the electrical conduction system of the heart. It can be associated with structural heart defects, surgeries involving the AV junction or heart muscle, as well as certain medications.
JET is typically diagnosed using electrocardiography (ECG) to evaluate the heart's electrical activity. Treatment options for JET include medication to control the heart rate, such as beta-blockers or antiarrhythmics, as well as catheter-based therapies like radiofrequency ablation to destroy the abnormal tissue responsible for the fast heart rate.
It is important for individuals with JET to be monitored regularly by a cardiologist to assess the effectiveness of treatment and prevent potential complications resulting from the condition.
