Accelerated idioventricular rhythm electrocardiogram

Accelerated idioventricular rhythm Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

EKG characteristics

• Regular rhythm at a rate of 40 to 100-120 BPM.
• QRS complexes are abnormal and wide.
• The ventricular complexes are usually but not necessarily dissociated from the P waves.
• Ventricular capture and fusion beats are common.

• 
  An example of accelerated idioventricular rhythm (AIVR)
• 
  AIVR. Inverted P waves are sign of retrograde atrial activation.