Description: Junctional tachycardia is a rapid heart rate that originates at the junction of the atria and ventricles, known as the junctional node. This type of tachycardia is characterized by a heart rate that can range from 40 to 180 beats per minute. Unlike other forms of tachycardia, such as supraventricular tachycardia, junctional tachycardia may present with a narrow QRS complex, indicating that ventricular activation occurs normally. This condition can be asymptomatic or may manifest with symptoms such as palpitations, dizziness, or even syncope in more severe cases. Junctional tachycardia can be triggered by various factors, including the use of certain medications, emotional stress, or underlying conditions such as heart disease. Diagnosis is typically made through an electrocardiogram (ECG), which allows for the observation of the heart’s electrical activity and confirms the presence of this arrhythmia. Junctional tachycardia is important to identify and treat appropriately, as, while often less dangerous than other arrhythmias, it can be a sign of more serious cardiac issues that require medical attention.
