60-100bpm
Present P-wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
Sinus Bradycardia
40-60bpm
Present P-wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
00:0701:38
Sinus Tachycardia
100-160bpm
Present P-wave
PRI 0.12-0.20 seconds
QRS 0.12> seconds
Sinus arrhythmia
Irregular
Normal or slow
Present P-Wave
, PRI 0.12-0.20 seconds
QRS 0.12> seconds
Sinus Arrest/Exit block
Regular rhythm w/ pause
P-wave not seen until next complex
Atrial Fibrillation (A-Fib)
Grossly irregular
400< ventricular varies
Wavy P-wave
PRI not measureable
QRS 0.12> seconds
Atrial Flutter
Regular or Irregular
250-400 (depending on conduction)
"Saw-tooth" P-waves
PRI not measureable
QRS 0.12> seconds
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