Relias Dysrhythmia Basic Test Answers 2024, Exams of Nursing

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Relias

Dysrhythmia

Basic Test

Answers 2024

Dysrhythmia –

Basic A ( A+

GRADED 100%

VERIFIED)

Relias Dysrhythmia Basic Test Answers 2024

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

Relias Dysrhythmia Basic Test Answers normal sinus rhythm heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute Sinus Arrhythmia Appearance is ALMOST NORMAL: Respiratory – Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) Sinus Bradycardia < normal sinus rhythm Sinus Tachycardia

100 (100-150) normal sinus rhythm

Relias Dysrhythmia Basic Test Answers 2024

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

irregular beating of the atria; often described as “a-flutter with 2 to 1 block or 3 to 1 block” Junctional Rhythm 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

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

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

Supraventricular Tachycardia (SVT) an abnormal heart rhythm arising from aberrant electrical activity in the heart; originates at or above the AV node First degree heart block 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) Progressively longer PR interval until the P wave is not followed by a QPR 2nd Degree Heart Block (Mobitz II) 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

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

QRS: Wide QRS – “Twisting of the Points” Conduction: Ventricular only Rhythm: Slightly irregular Ventricular fibrillation (V-fib) abnormal heart rhythm which results in quivering of ventricles Idioventricular Rhythm < 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 Rate: 50 – 100 usually (usually slow) 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

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

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 absence of contractions of the heart Failure to capture (pacemaker) failure to sense (pacemaker) Atrial paced rhythm spike before P wave Ventricular paced rhythm ventricular contractions which occur in cases of complete heart block.

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

Premature Atrial Contraction IRREGULAR Rate: depends on underlying rhythm P wave: Present or hidden in T wave PR Interval: 0.12-0.20 sec QRS: <0.12 sec Atrial Fibrillation IRREGULAR Atrial rate: UNMEASURABLE Ventricular rate: variable P wave: unable to see PR Interval: N/A QRS: <0.12 sec A fib RVR IRREGULAR Ventricular rate: 100- P wave: unable to see PR Interval: N/A QRS <0.12 sec

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

Atrial Flutter Usually REGULAR can be irregular Atrial rate: 250- Ventricular rate: variable BUT < atrial rate P Wave: Flutter PR Interval: N/A QRS: <0.12 sec Supraventricular Tachycardia Regular Rate: 150- 350 P wave: Hidden in QRS or T wave PR: unable to determine QRS: <0.12 sec Junctional Rhythm Regular Rate: 40- 60 P Wave: ABSENT or INVERTED PR Interval: None or <0.

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

QRS: WIDE and BIZARRE , >0.12 sec Ventricular Tachycardia Regular Rate: > P Wave: NONE PR Interval: N/A QRS: WIDE and BIZARRE, >0.12 sec Ventricular Fibrillation Chaotic Coarse: big waves Fine: small waves Rate: unmeasurable P Wave: NONE PR Interval: N/A QRS: N/A Idioventricular Regular Rate: 20- 50

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec Accelerated Idoventricular Rhythm Regular Rate: 50- 100 P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec 1st Degree AV Block Regular Rate: 60- 100 P Wave: Present, upright PR interval: >0.20 sec CONSISTENTLY LONG QRS: <0.12 secHusband stays late till 9 consistently 2nd Degree AV Block Type I Mobitz, Wenckebach IRREGULAR Rate: 60- 100

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

1st 60- 100 AV Node 2nd 40- 60 Bundle of His 3rd 40- 45 Right and Left Bundle Branches 4th 40- 45 Purkinje Fibers 5th 20- 50 1 Small Box 0.04 sec 1 Big Box 0.20 sec Junctional Rhythms SA Node DID NOT FIRE AV Node fired NO P WAVE bc SA node didn’t fire Narrow QRS P Wave Amplitude 0.5-2.5 mm Will be shorter than T wave

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

Shows firing of SA node QRS 0.06-0.10 sec SHOULD BE <0.12 sec Wide QRS: delay in ventricular contraction, delay of conduction through bundle branches or purkinje fibers BUNDLE BRANCH BLOCK or BLOCK IN PURKINJE FIBERS (idioventricular) Calculate Regular Rate 1500/ boxes R-R Calculate Irregular Rate of Rs in 6 sec strip X 10 Unifocal PVCs Only 1 shape PVC Bigeminy PVC occurs every OTHER beat Trigeminy PVC occurs every THIRD beat Couplet 2 PVCs together Triplet 3 PVCs together Multifocal Multiple shapes

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

Spike before P and before QR Failure to Capture Spikes with no QRS Failure to Sense Spikes happen regardless of QRS on their own How to determine the rhythm Regular or irregular? Rate? P before every QRS? QRS for every P? QRS wide or narrow? QT Interval 0.34-0. P Wave 0.06-0.12 sec PR Interval 0.12-0.20 sec SA Node Firing Rhythms Fires normally @ 60-100 -SR 60- 100 -SB < -ST 100- 150

Dysrhythmia –Basic A ( A+ GRADED 100%

VERIFIED)

-SVT 150- 350

AV Node Firing, SA Node Failed Rhythms Fires normally @ 40-60 -Junctional rhythm 40- 60 -Accelerated junctional rhythm 60- 100 -Junctional tachycardia 100- Only Purkinje Fibers Firing Rhythms (Everything else has failed) Fires normally @ 20-50 -Idioventricular 20- 50 -Accelerated idioventricular 50-