The clinical manifestations of supraventricular tachycardia are panic, chest tightness, cerebral blood supply insufficiency and other symptoms. 1. Panic: Supraventricular tachycardia includes paroxysmal supraventricular tachycardia, nonparoxysmal junctional tachycardia, and spontaneous atrial tachycardia, etc., and the patients are prone to panic symptoms. 2. Chest tightness: As the heart beats too fast, the ejection of blood from the heart will be reduced, and the blood supply to the heart muscle will be lowered, which will easily lead to chest tightness, chest pain and other symptoms. 3. Insufficient blood supply to the brain: The reduced blood ejection of the heart over a long period of time in supraventricular tachycardia may cause insufficient blood supply to the brain, leading to weakness, dizziness, fainting and other symptoms. Patients with supraventricular tachycardia should pay attention to adjusting their emotions, avoiding excessive stress, and refraining from strenuous exercise, etc. If you have any uncomfortable symptoms, you should go to the hospital in time, and give appropriate treatment under the guidance of the doctor.