Supraventricular Tachycardia

rhythm strip

Supraventricular Tachycardia (SVT) is a dysrhythmia originating at or above the Atrioventricular (AV) node


Heart Rate: 150-220

Rhythm: Supraventricular Tachycardia

P wave: can be present or missing on EKG Strip

QRS Complex: Narrow

ST segment: 

Check the Patient:

  • Level of Consciousness (unresponsive)
  • Hypotension (Systolic Less than 90mmHg.)
  • Chest Discomfort or Shortness of Breath
  • Saturation: less than 92% 
  • HR above 150/min (SVT present)

Stable Treatment Plan: 

  • Consider Oxygenation
  • Monitor and Continue Observing
  • Obtain IV/IO Access
  • Attempt the Vagal - Include Outside link for Vagal Manuever
  • Adenosine (Antiarrythmic)
    • 1st dose: 6mg
    • 2nd dose: 12mg

Unstable Treatment Plan 

  • Cardioversion 


  • Heart disease
  • Heart failure
  • Other heart conditions, such as Wolff-Parkinson-White syndrome
  • Chronic lung disease
  • A lot of caffeine
  • Drinking too much alcohol
  • Drug misuse, including cocaine and methamphetamine
  • Pregnancy
  • Smoking
  • Thyroid disease
  • Certain medications, including asthma medications and cold and allergy drugs

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