Basic Dysrhythmia-Relias Exam With Complete Solutions.

Basic Dysrhythmia-Relias Exam With
Complete Solutions.




normal sinus rhythm - CORRECT ANSWER✔✔heart rhythm originating in the sinoatrial node with a rate in
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patients at rest of 60 to 100 beats per minute
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Sinus Arrhythmia - CORRECT ANSWER✔✔Appearance is ALMOST NORMAL:
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Respiratory - Circulatory interaction
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Rate INCREASES with INSPIRATION (IN=IN)
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Sinus Bradycardia - CORRECT ANSWER✔✔<60
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normal sinus rhythm
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Sinus Tachycardia - CORRECT ANSWER✔✔>100 (100-150)
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normal sinus rhythm
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, Premature Atrial Contraction (PAC) - CORRECT ANSWER✔✔Heart Rate: Depends on underlying rhythm
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Regularity: Interrupts the regularity of underlying rhythm j j j j j j




P-Wave: can be flattened, notched, or unusual. May be hidden within the T wave
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PRI: measures between .12-.20 seconds and can be prolonged; can be different from other complexes
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QRS: <.12 seconds
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Sinus Arrest/Pause - CORRECT ANSWER✔✔- SA node doesn't fire
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- notice absence of P-wave for a complete cycle (a missed cycle)
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length of pause ≠ multiple of normal rate (block)
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Atrial Fibrillation (A-Fib) - CORRECT ANSWER✔✔an irregular and often very fast heart rate originating from
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abnormal conduction in the atria
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Atrial Flutter - CORRECT ANSWER✔✔irregular beating of the atria; often described as "a-flutter with 2 to 1
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block or 3 to 1 block"
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Junctional Rhythm - CORRECT ANSWER✔✔40-60 Regular! j j j j j




-impulse from AV node w/ retro/antegrade transmission
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- P wave often inverted/buried/follow QRS
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- slow rate
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- narrow QRS (not wide like ventricular)
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Junctional Tachycardia - CORRECT ANSWER✔✔>60 bpm (ms. K; 150-250)
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- KEY: will be regular (consistent)
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- AV junction produces a rapid sequence of QRS-T cycles
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- p-wave often inverted/buried/follow QRS
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