Atrial Fibrillation

Rhythm

Irregularly, Irregular

Rate

The atrial rate cannot be determined. If the ventricular rate is < 100, it is considered controlled a-fib. With rates > than 100, it is considered uncontrolled a-fib.

P-Waves

Absent, fibrillatory (f-waves) present

PRI

None

QRS

< 0.12 seconds

Pacer Site

Multiple irritable foci in the atria