RELIAS ADVANCED DYSRHYTHMIA EXAM A
2026 COMPLETE ANSWERS CARDIAC
MONITORING PRACTICE RESOURCE
◉ Premature Atrial Contraction (PAC).
Answer: Heart Rate: Depends on underlying rhythm
Regularity: Interrupts the regularity of underlying rhythm
P-Wave: can be flattened, notched, or unusual. May be hidden within
the T wave
PRI: measures between .12-.20 seconds and can be prolonged; can
be different from other complexes
QRS: <.12 seconds
◉ Sinus Arrest/Pause.
Answer: - SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
length of pause ≠ multiple of normal rate (block)
◉ Atrial Fibrillation (A-Fib).
Answer: an irregular and often very fast heart rate originating from
abnormal conduction in the atria
, ◉ Atrial Flutter.
Answer: irregular beating of the atria; often described as "a-flutter
with 2 to 1 block or 3 to 1 block"
◉ Junctional Rhythm.
Answer: 40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
◉ Junctional Tachycardia.
Answer: >60 bpm (ms. K; 150-250)
- KEY: will be regular (consistent)
- AV junction produces a rapid sequence of QRS-T cycles
- p-wave often inverted/buried/follow QRS
◉ Premature Junctional Contraction.
Answer: Inverted p wave or hidden p wave
PRI<0.12 or none
Normal QRS
2026 COMPLETE ANSWERS CARDIAC
MONITORING PRACTICE RESOURCE
◉ Premature Atrial Contraction (PAC).
Answer: Heart Rate: Depends on underlying rhythm
Regularity: Interrupts the regularity of underlying rhythm
P-Wave: can be flattened, notched, or unusual. May be hidden within
the T wave
PRI: measures between .12-.20 seconds and can be prolonged; can
be different from other complexes
QRS: <.12 seconds
◉ Sinus Arrest/Pause.
Answer: - SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
length of pause ≠ multiple of normal rate (block)
◉ Atrial Fibrillation (A-Fib).
Answer: an irregular and often very fast heart rate originating from
abnormal conduction in the atria
, ◉ Atrial Flutter.
Answer: irregular beating of the atria; often described as "a-flutter
with 2 to 1 block or 3 to 1 block"
◉ Junctional Rhythm.
Answer: 40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
◉ Junctional Tachycardia.
Answer: >60 bpm (ms. K; 150-250)
- KEY: will be regular (consistent)
- AV junction produces a rapid sequence of QRS-T cycles
- p-wave often inverted/buried/follow QRS
◉ Premature Junctional Contraction.
Answer: Inverted p wave or hidden p wave
PRI<0.12 or none
Normal QRS
