1. Sinus Rhythm: 60-
100bpm Present P-wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
2. Sinus Bradycardia: 40-
60bpm Present P-wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
3. Sinus Tachycardia: 100-
160bpm Present P-wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
4. Sinus arrhythmia:
Irregular Normal or slow
Present P-Wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
5. Sinus Arrest/Exit block: Regular rhythm w/
1/
, pause P-wave not seen until next complex
6. Atrial Fibrillation (A-Fib): Grossly
irregular 400< ventricular varies
Wavy P-wave
PRI not
measureable QRS
0.12> seconds
7. Atrial Flutter: Regular or
Irregular 250-400 (depending
on conduction)
"Saw-tooth" P-waves
PRI not measureable
QRS 0.12> seconds
8. Paced Atrial: "Spike" before P-wave
9. 1° AVB: Rate determined by
rhythm 1 P-wave to each QRS
PRI prolonged >0.20
2/