The main symptom of supraventricular tachycardia (SVT) is a very fast heartbeat (100 beats a minute or more) that may last for a few minutes to a few days. The fast heartbeat may come and go suddenly, with stretches of typical heart rates in between. Some people with SVT have no signs or symptoms. SVT Signs and symptoms of supraventricular tachycardia may include:  Very fast (rapid) heartbeat A fluttering or pounding in the chest (palpitations) A pounding sensation in the neck Weakness or feeling very tired (fatigue) Chest pain Shortness of breath Lightheadedness or dizziness Sweating Fainting (syncope) or near fainting  In infants and very young children, signs and symptoms of SVT may be difficult to identify. They include sweating, poor feeding, pale skin and a rapid pulse. If your infant or young child has any of these symptoms, ask your child's care provider about SVT screening.
symptom supraventricular tachycardia (svt) fast heartbeat (100 beats minute more) may last minutes days  fast heartbeat may come suddenly  stretches typical heart rates between  people svt signs symptoms  svt signs symptoms supraventricular tachycardia may include:  fast (rapid) heartbeat fluttering pounding chest (palpitations) pounding sensation neck weakness feeling tired (fatigue) chest pain shortness breath lightheadedness dizziness sweating fainting (syncope) near fainting  infants young children  signs symptoms svt may difficult identify  include sweating  poor feeding  pale skin rapid pulse  infant young child symptoms  ask child's care provider svt screening
supraventricular tachycardia