EKG Rhythms – Characteristics Final Exam Test 2026\2027.
Normal Sinus Rhythm
Rhythm: regular
Rate: 60-100BPM
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Sinus Bradycardia
Rhythm: regular
Rate: <60BPM
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Sinus Tachycardia
Rhythm: regular
Rate: >100BPM (100-150BPM)
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Sinus Arrhythmia
Rhythm: irregular
Rate: 60-100BPM
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Wandering Pacemaker
Rhythm: irregular
Rate: 60-100BPM
P wave: vary, usually at least 3 different
, EKG Rhythms – Characteristics Final Exam Test 2026\2027.
PRI: various <0.2s
QRS: <0.12s
Premature Atrial Complex PAC
single beat
Rhythm: underlying
Rate: underlying
P wave: diff from underlying, flattened, notched
PRI: 0.12-0.2s, can be >0.2s
QRS: <0.12s
Atrial Tachycardia
Rhythm: regular
Rate: 150-250BPM
P wave: can be lost
PRI: 0.12-0.2s
QRS: <0.12s
Atrial Flutter
Rhythm: regular
Rate: atrial-250-350BPM, ventricle-varies
P wave: -
PRI: flutter waves, sawtooth
QRS: <0.12s
Atrial Fibrillation
Rhythm: grossly irregular
Rate: atrial->350BPM, ventricle-<100BPM controlled >100BPM uncontrolled
P wave: -
PRI: fibrillatory waves
QRS: <0.12s
Premature Ventricular Complex PVC
Normal Sinus Rhythm
Rhythm: regular
Rate: 60-100BPM
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Sinus Bradycardia
Rhythm: regular
Rate: <60BPM
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Sinus Tachycardia
Rhythm: regular
Rate: >100BPM (100-150BPM)
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Sinus Arrhythmia
Rhythm: irregular
Rate: 60-100BPM
P wave: normal & upright
PRI: 0.12-0.2s
QRS: <0.12s
Wandering Pacemaker
Rhythm: irregular
Rate: 60-100BPM
P wave: vary, usually at least 3 different
, EKG Rhythms – Characteristics Final Exam Test 2026\2027.
PRI: various <0.2s
QRS: <0.12s
Premature Atrial Complex PAC
single beat
Rhythm: underlying
Rate: underlying
P wave: diff from underlying, flattened, notched
PRI: 0.12-0.2s, can be >0.2s
QRS: <0.12s
Atrial Tachycardia
Rhythm: regular
Rate: 150-250BPM
P wave: can be lost
PRI: 0.12-0.2s
QRS: <0.12s
Atrial Flutter
Rhythm: regular
Rate: atrial-250-350BPM, ventricle-varies
P wave: -
PRI: flutter waves, sawtooth
QRS: <0.12s
Atrial Fibrillation
Rhythm: grossly irregular
Rate: atrial->350BPM, ventricle-<100BPM controlled >100BPM uncontrolled
P wave: -
PRI: fibrillatory waves
QRS: <0.12s
Premature Ventricular Complex PVC