The mechanism of action for JT usually involves increased automaticity in the AV node.
JT is typically seen in children and young adults. It is also seen in infants postoperatively after repair of congenital heart disease. It is usually highly symptomatic. It may result in heart failure in cases where tachycardia is incessant.
In adults, JT is less common, although it is sometimes seen in the setting of digoxin toxicity, myocardial infarction (MI), myocarditis, or cardiac surgery. It is usually benign in adults.
I47.1 – Supraventricular tachycardia
419166005 – Junctional ectopic tachycardia
Differential Diagnosis & Pitfalls