Basic Dysrhythmia-Relias Save

BASIC DYSRHYTHMIA-RELIAS QUESTIOS AND
CORRECT SOLUTIONS




normal sinus rhythm - Correct answer~ heart rhythm originating in the sinoatrial
node with a rate in patients at rest of 60 to 100 beats per minute



Sinus Arrhythmia - Correct answer~ Appearance is ALMOST NORMAL:

Respiratory - Circulatory interaction

Rate INCREASES with INSPIRATION (IN=IN)



Sinus Bradycardia - Correct answer~ <60

normal sinus rhythm



Sinus Tachycardia - Correct answer~ >100 (100-150)

normal sinus rhythm



Premature Atrial Contraction (PAC) - Correct 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 - Correct 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) - Correct answer~ an irregular and often very fast
heart rate originating from abnormal conduction in the atria



Atrial Flutter - Correct answer~ irregular beating of the atria; often described as
"a-flutter with 2 to 1 block or 3 to 1 block"



Junctional Rhythm - Correct 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 - Correct 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 - Correct answer~ Inverted p wave or hidden
p wave

PRI<0.12 or none

Normal QRS



Supraventricular Tachycardia (SVT) - Correct answer~ an abnormal heart rhythm
arising from aberrant electrical activity in the heart; originates at or above the
AV node