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Atrial Fibrillation

– a chaotic firing within the heart that originates from the atria.

– ♣ There is no P wave and a chaotic QRS in a patient with A-Fib

Sinus Rhythm

– is a normal rhythm


  • Ventricular  80- 160
  • Atrial > 350 (greater than 350)


  • P-R Interval: Irregular
  • P-P Interval: absent


  • PR Interval: Absent
  • QRS Complex: .6-.10 seconds

Atrial Fibrillation

– Multiple rapid impulses within the atria at a rate of 350+ per minute

– Atrial quiver can lead to thrombi formation.

– Give O2 and anticoagulants (pt. is risk for thrombus)


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