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BASIC ARRHYTHMIA SENTARA 2026|
WELL REVISED EXAM QUESTIONS AND
ANSWERS
Sinus Block Interpretation - correct-answer - P wave: Upright, uniform, before
each QRS PRI: 0.12 - 0.20 seconds QRS: 0.06 - 0.12 seconds Rhythm: Regular
except for missing beats Rate: Usually 60 - 100, but could be bradycardic rate
Premature Atrial Contraction (PAC) Interpretation - correct-answer - P wave:
Abnormally shaped in premature beat (peaked, notched, flattened, or diphasic)
PRI: 0.12 - 0.20 seconds QRS: 0.06 - 0.12 seconds Rhythm: Irregular Rate: Overall
heart rate depends on underlying rhythm
Atrial Flutter Interpretation - correct-answer - P wave: None. Flutter waves which
have saw-tooth appearance PRI: Not measurable QRS: 0.06 - 0.12 seconds
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Rhythm: Usually regular but can be irregular Rate: Atrial rate is 220-400;
Ventricular rate ½ to 1/3 the Atrial rate
Atrial Fibrillation Interpretation - correct-answer - P wave: None PRI: Not
measurable QRS: 0.06 - 0.12 seconds Rhythm: Irregular Rate: "Controlled" - HR <
100 "Uncontrolled" - HR > 100
Supraventricular Tachycardia Interpretation - correct-answer - P wave: May be
buried in T-wave of preceding beat PRI: 0.12 - 0.20 seconds (if visible, may be
difficult to measure, usually hidden) QRS: 0.06 - 0.12 seconds (usually narrow)
Rhythm: Regular Rate: 151-250
Premature Junctional Contraction (PJC) Interpretation - correct-answer - P wave:
May be inverted, occur before or after the QRS, or may be embedded and hidden
in the QRS complex. PRI: Not measurable in premature beat unless P wave
precedes QRS. If this occurs the PRI will be <0.12 seconds QRS: 0.06 - 0.12 seconds
BASIC ARRHYTHMIA SENTARA 2026|
WELL REVISED EXAM QUESTIONS AND
ANSWERS
Sinus Block Interpretation - correct-answer - P wave: Upright, uniform, before
each QRS PRI: 0.12 - 0.20 seconds QRS: 0.06 - 0.12 seconds Rhythm: Regular
except for missing beats Rate: Usually 60 - 100, but could be bradycardic rate
Premature Atrial Contraction (PAC) Interpretation - correct-answer - P wave:
Abnormally shaped in premature beat (peaked, notched, flattened, or diphasic)
PRI: 0.12 - 0.20 seconds QRS: 0.06 - 0.12 seconds Rhythm: Irregular Rate: Overall
heart rate depends on underlying rhythm
Atrial Flutter Interpretation - correct-answer - P wave: None. Flutter waves which
have saw-tooth appearance PRI: Not measurable QRS: 0.06 - 0.12 seconds
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Rhythm: Usually regular but can be irregular Rate: Atrial rate is 220-400;
Ventricular rate ½ to 1/3 the Atrial rate
Atrial Fibrillation Interpretation - correct-answer - P wave: None PRI: Not
measurable QRS: 0.06 - 0.12 seconds Rhythm: Irregular Rate: "Controlled" - HR <
100 "Uncontrolled" - HR > 100
Supraventricular Tachycardia Interpretation - correct-answer - P wave: May be
buried in T-wave of preceding beat PRI: 0.12 - 0.20 seconds (if visible, may be
difficult to measure, usually hidden) QRS: 0.06 - 0.12 seconds (usually narrow)
Rhythm: Regular Rate: 151-250
Premature Junctional Contraction (PJC) Interpretation - correct-answer - P wave:
May be inverted, occur before or after the QRS, or may be embedded and hidden
in the QRS complex. PRI: Not measurable in premature beat unless P wave
precedes QRS. If this occurs the PRI will be <0.12 seconds QRS: 0.06 - 0.12 seconds
