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Supraventricular Tachycardia - Course # 314-12

Supraventricular Tachycardia

  • Supraventricular tachycardia occurs when the heart rhythm occurs as a result of electrical impulses initiated above the ventricles at a rate of 150 - 250 bpm or more.
  • What will remain will be a normal appearing and measuring QRS complex depolarizing at a rapid rate.
  • As a result of the rapid rate, the cardiac complexes will be very close to one another.
  • The T waves of the previous complex will cover the P wave of the next complex. P waves will be entirely buried making it impossible to describe their morphology and measure the PR interval.
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Practice Strip

  • Analyze this tracing using the five steps of rhythm analysis.
  • Compare your answers with the answers on the next slide.
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Answers

  • Rhythm: Regular
  • Rate: 200
  • P wave: Buried
  • PR interval: Unable to measure
  • QRS: 0.06 sec
  • Interpretation: Supraventricular Tachycardia
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314 Supraventricular Tachycardia - Course # 314-12