Clinical Features

The clinical presentation of patients with SVT is variable and depends on confounding factors such as age and pre-existing cardiovascular state. How much cardiovascular reserve the patient has determines how well it is tolerated.

Presenting symptoms include:

• Palpitations
• Cardiac chest pain
• Dizziness
• Shortness of breath

The onset of symptoms may:

• Be abrupt
• Terminate spontaneously
• Be recurrent (paroxysmal)

Patients, particularly younger patients, sometimes do not seek medical help.