Relias Dysrhythmia Basic Test Answers 2023
Dysrhythmia – Basic A+ GRADED 100% VERIFIED
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
First degree heart block - Correct Answer-atrioventricular (AV) block in which the atrial
electrical impulses are delayed by a fraction of a second before being conducted to the
ventricles
2nd degree heart block type 1 (Wenkebach) - Correct Answer-Progressively longer PR
interval until the P wave is not followed by a QPR
2nd Degree Heart Block (Mobitz II) - Correct Answer-Rare, but more serious
Sudden appearance of a nonconducted P-wave
P-waves are nl, but some aren't followed by a QRS complex
PR & RR intervals are constant
3rd degree heart block - Correct Answer-no obvious correlation between p and qrs, need
pace maker
Dysrhythmia – Basic A+ GRADED 100% VERIFIED
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
First degree heart block - Correct Answer-atrioventricular (AV) block in which the atrial
electrical impulses are delayed by a fraction of a second before being conducted to the
ventricles
2nd degree heart block type 1 (Wenkebach) - Correct Answer-Progressively longer PR
interval until the P wave is not followed by a QPR
2nd Degree Heart Block (Mobitz II) - Correct Answer-Rare, but more serious
Sudden appearance of a nonconducted P-wave
P-waves are nl, but some aren't followed by a QRS complex
PR & RR intervals are constant
3rd degree heart block - Correct Answer-no obvious correlation between p and qrs, need
pace maker
