BASIC RELIAS DYSRHYTHMIA EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS
Normal sinus rhythm - answer-heart rhythm originating in the sinoatrial node with a rate
in patients at rest of 60 to 100 beats per minute
Sinus arrhythmia - answer-appearance is almost normal:
Respiratory - circulatory interaction
Rate increases with inspiration (in=in)
Sinus bradycardia - answer-<60
Normal sinus rhythm
Sinus tachycardia - answer->100 (100-150)
Normal sinus rhythm
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
QUESTIONS WITH COMPLETE
SOLUTIONS
Normal sinus rhythm - answer-heart rhythm originating in the sinoatrial node with a rate
in patients at rest of 60 to 100 beats per minute
Sinus arrhythmia - answer-appearance is almost normal:
Respiratory - circulatory interaction
Rate increases with inspiration (in=in)
Sinus bradycardia - answer-<60
Normal sinus rhythm
Sinus tachycardia - answer->100 (100-150)
Normal sinus rhythm
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
