Basic Dysrhythmia-Relias TEST ANSWERS 2023/2024 DYSRHYTHMIA – BASIC A (A+ GRADED), Exams, Exams of Nursing

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DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

normal sinus rhythm - CORRECT ANSWERS heart rhythm

originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute

Sinus Arrhythmia - CORRECT ANSWERS Appearance is

ALMOST NORMAL:

Respiratory - Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN)

Sinus Bradycardia - CORRECT ANSWERS <

normal sinus rhythm

Sinus Tachycardia - CORRECT ANSWERS >100 (100-150)

normal sinus rhythm

Premature Atrial Contraction (PAC) - CORRECT ANSWERS

Heart Rate: Depends on underlying rhythm Regularity: Interrupts the regularity of underlying rhythm

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

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 ANSWERS - 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 ANSWERS an irregular

and often very fast heart rate originating from abnormal conduction in the atria

Atrial Flutter - CORRECT ANSWERS irregular beating of the

atria; often described as "a-flutter with 2 to 1 block or 3 to 1 block"

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

Junctional Rhythm - CORRECT ANSWERS 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 ANSWERS >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 ANSWERS

Inverted p wave or hidden p wave PRI<0.12 or none Normal QRS

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

Supraventricular Tachycardia (SVT) - CORRECT ANSWERS

an abnormal heart rhythm arising from aberrant electrical activity in the heart; originates at or above the AV node

First degree heart block - CORRECT ANSWERS

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

ANSWERS Progressively longer PR interval until the P wave is

not followed by a QPR

2nd Degree Heart Block (Mobitz II) - CORRECT ANSWERS

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

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

3rd degree heart block - CORRECT ANSWERS no obvious

correlation between p and qrs, need pace maker

premature ventricular contraction (PVC) - CORRECT

ANSWERS a ventricular contraction preceding the normal

impulse initiated by the SA node (pacemaker)

Bigeminy PVC - CORRECT ANSWERS every other beat is a

PVC

PVC couplets - CORRECT ANSWERS PVC occurring in pairs,

no adequate C.O. when this occurs

monomorphic ventricular tachycardia - CORRECT

ANSWERS presents with wide QRS complexes of a common

shape.

Torsades de pointes - CORRECT ANSWERS Rate: 120 - 200

usually

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

P wave: Obscured by ventricular waves QRS: Wide QRS - "Twisting of the Points" Conduction: Ventricular only Rhythm: Slightly irregular

Ventricular fibrillation (V-fib) - CORRECT ANSWERS

abnormal heart rhythm which results in quivering of ventricles

Idioventricular Rhythm - CORRECT ANSWERS <

looks like vtach but slow

• no P waves (from vent foci)
• Wide QRS (serious, death like rhythm)
• called "dying heart" rhythm...occasional ventric beat b4 death (asystole)

Accelerated Idioventricular Rhythm - CORRECT ANSWERS

Rate: 50 - 100 usually (usually slow)

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

P wave: Obscured by ventricular waves (occur during ventricular contraction) - SA node slower than faster ventricular pacing than should be QRS: Wide QRS Conduction: Ventricular only Rhythm: Regular

• benign rhythm that is sometimes seen during acute MI or early after reperfusion. - Rarely sustained, does not progress to vfib, rarely requires treatment

asystole - CORRECT ANSWERS absence of contractions of

the heart

Failure to capture (pacemaker) - CORRECT ANSWERS

failure to sense (pacemaker) - CORRECT ANSWERS

DYSRHYTHMIA – BASIC A (A+ GRADED), Exams for

Nursing

Atrial paced rhythm - CORRECT ANSWERS spike before P

wave

Ventricular paced rhythm - CORRECT ANSWERS

ventricular contractions which occur in cases of complete heart block.