Final answer:
Junctional tachycardia SVT is a type of supraventricular tachycardia that occurs when the heart's electrical signals originate from the atrioventricular node instead of the sinoatrial node.
Step-by-step explanation:
Junctional tachycardia is a type of supraventricular tachycardia (SVT) that occurs when the heart's electrical signals originate from the atrioventricular (AV) node instead of the sinoatrial (SA) node. This abnormal electrical pathway causes the heart to beat faster than normal. SVT, including junctional tachycardia, is a type of arrhythmia characterized by an irregular, too fast, or too slow heartbeat. It can be diagnosed using tests like an electrocardiogram (ECG), and treatment options include medications, electrical cardioversion, or the implantation of an artificial pacemaker.