Supraventricular tachycardia is the abbreviation for supraventricular tachycardia, a group of tachyarrhythmias in which the site of ectopic excitation or the refractory loop is above the bifurcation of the Hirschsprung’s bundle, and it is one of the most common cardiac arrhythmias in the clinic. 1.Supraventricular tachycardia occurs due to abnormal electrical impulse signaling pathways in the atria and AV node, and can be triggered by poor lifestyle, underlying diseases, and the use of certain drugs or stimulating foods. Patients may experience chest tightness, palpitations, chest pain, fatigue, dizziness, dyspnea and other symptoms. 2. Supraventricular tachycardia can be diagnosed by electrocardiogram or cardiac electrophysiologic examination during the onset of tachycardia. The electrocardiogram shows a series of rapid and regular QRS wave clusters, which may be accompanied by ST-segment depression and T-wave inversion. 3. The treatment of supraventricular tachycardia includes correction of triggers, stimulation of the vagus nerve, use of antiarrhythmic drugs, and radiofrequency ablation if the above methods are ineffective or recurrent. If supraventricular tachycardia is found, you should go to the cardiology department of regular hospitals for diagnosis and appropriate treatment.