Online ACLS Course

Chapter 16 : Stable Tachycardia

Tachycardia is when the heart rate or rhythm is too fast (>100 beats/min). Increase in heart rate causes less blood to be pumped through the systemic and pulmonary systems. Low blood flow will cause less oxygen to flow to the heart and brain and less oxygen to the heart can lead to Ischemia and MI.   In stable tachycardia the patient is stable and no significant signs and symptoms are present.
The rhythms for stable tachycardia include:

  • Atrial fibrillation
  • Atrial flutter
  • Sinus tachycardia
  • AV nodal reentry
  • SVT
  • Monomorphic VT
  • Polymorphic VT
  • Multifocal atrial tachycardia
Video Demonstration

Stable Tachycardia

Atrial fibrillation is when the heart beats do not occur at the same intervals.  It is known as the quivering of the muscles and involves both the atriums of the heart.

atrial fibrillation

Atrial flutter is abnormal heart rhythm causing fast irregular heartbeat.  Starts in the atrium and can lead to atrial fibrillation. Usually has a ‘saw-toothed’ appearance.

atrial flutter

Sinus tachycardia is when the rate of impulse from the SA node is elevated.