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Supraventricular Tachycardia

A rapid heartbeat that begins and ends abruptly, arising from the upper chambers of the heart and often seen in young adults.

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

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What is Supraventricular Tachycardia?

Supraventricular tachycardia (SVT) is a general term for rapid rhythms originating from structures above the ventricles (the sinus node, AV node, and atria). The most common form is AV nodal re-entrant tachycardia (AVNRT).

The heart rate during episodes typically ranges from 150 to 250 beats per minute. Episodes begin and end suddenly; this characteristic distinguishes SVT from other arrhythmias.

SVT is common in younger individuals without structural heart disease. It is more often troublesome than life-threatening and can be permanently cured with catheter ablation.

Symptoms

Sudden-onset rapid palpitations
Neck pulsations
Dizziness and weakness
Shortness of breath and chest tightness
Anxiety and restlessness
Nausea (in prolonged episodes)

Risk Factors

Young to middle age (peak group)
Caffeine, alcohol, and tobacco use
Excessive fatigue and stress
Wolff–Parkinson–White syndrome or accessory pathways
Thyroid disorders

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Cardiology evaluation after the first episode of SVT
  • If episodes become more frequent or prolonged
  • Go to the emergency department if fainting or chest pain is present
  • Specialist referral for ablation if medical therapy is ineffective

Treatment Methods

01
Valsalva maneuver or cold-water application (vagal maneuvers)
02
Adenosine or calcium-channel blockers (in the acute setting)
03
Beta-blockers or flecainide (for long-term prevention)
04
Catheter ablation (permanent elimination of the re-entrant circuit)
05
Avoidance of triggers (caffeine, alcohol)

Which Department to Visit?

You can visit our Kardiyoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.