Basic Dysrhythmia-Relias Relias Dysrhythmia Basic Test Answers 2024 Dysrhythmia – Basic A, Exams of Nursing

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Basic Dysrhythmia-Relias

Relias Dysrhythmia Basic Test Answers 2024

Dysrhythmia – Basic A ( A+ GRADED 100%

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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 AnswerAppearance is ALMOST NORMAL: Respiratory - Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) Sinus Bradycardia - correct Answer< normal sinus rhythm Sinus Tachycardia - correct Answer>100 (100-150) normal sinus rhythm Premature Atrial Contraction (PAC) - correct AnswerHeart 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 Answeran irregular and often very fast heart rate originating from abnormal conduction in the atria Atrial Flutter - correct Answerirregular beating of the atria; often described as "a-flutter with 2 to 1 block or 3 to 1 block" Junctional Rhythm - correct Answer40-60 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 AnswerInverted p wave or hidden p wave PRI<0.12 or none Normal QRS Supraventricular Tachycardia (SVT) - correct Answeran abnormal heart rhythm arising from aberrant electrical activity in the heart; originates at or above the AV node First degree heart block - correct Answeratrioventricular (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 AnswerProgressively longer PR interval until the P wave is not followed by a QPR 2nd Degree Heart Block (Mobitz II) - correct AnswerRare, 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 Answerno obvious correlation between p and qrs, need pace maker premature ventricular contraction (PVC) - correct Answera ventricular contraction preceding the normal impulse initiated by the SA node (pacemaker) Bigeminy PVC - correct Answerevery other beat is a PVC PVC couplets - correct AnswerPVC occurring in pairs, no adequate C.O. when this occurs monomorphic ventricular tachycardia - correct Answerpresents with wide QRS complexes of a common shape. Torsades de pointes - correct AnswerRate: 120 - 200 usually P wave: Obscured by ventricular waves QRS: Wide QRS - "Twisting of the Points" Conduction: Ventricular only Rhythm: Slightly irregular Ventricular fibrillation (V-fib) - correct Answerabnormal heart rhythm which results in quivering of ventricles

Idioventricular Rhythm - correct Answer< 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 AnswerRate: 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 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 Answerabsence of contractions of the heart Failure to capture (pacemaker) - correct Answer failure to sense (pacemaker) - correct Answer Atrial paced rhythm - correct Answerspike before P wave Ventricular paced rhythm - correct Answerventricular contractions which occur in cases of complete heart block. Normal sinus rhythm - correct AnswerRegular Rate: 60- P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec Sinus Bradycardia - correct AnswerRegular Rate: < P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec Sinus Tachycardia - correct AnswerRegular Rate: 100- P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec

Premature Atrial Contraction - correct AnswerIRREGULAR 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 - correct AnswerIRREGULAR Atrial rate: UNMEASURABLE Ventricular rate: variable P wave: unable to see PR Interval: N/A QRS: <0.12 sec A fib RVR - correct AnswerIRREGULAR Ventricular rate: 100- P wave: unable to see PR Interval: N/A QRS <0.12 sec Atrial Flutter - correct AnswerUsually 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 - correct AnswerRegular Rate: 150- P wave: Hidden in QRS or T wave PR: unable to determine QRS: <0.12 sec Junctional Rhythm - correct AnswerRegular Rate: 40- P Wave: ABSENT or INVERTED PR Interval: None or <0. QRS: <0.12 sec Accelerated Junctional Rhythm - correct AnswerRegular Rate: 60- P Wave: NONE or INVERTED PR Interval: None or <0. QRS: <0.12 sec Junctional Tachycardia - correct AnswerRegular Rate: >

P Wave: NONE or INVERTED PR Interval: None or <0. QRS: <0.12 sec Premature Ventricular Contraction - correct AnswerIRREGULAR Rate: refer to underlying rhythm P Wave: NONE PR Interval: N/A QRS: WIDE and BIZARRE , >0.12 sec Ventricular Tachycardia - correct AnswerRegular Rate: > P Wave: NONE PR Interval: N/A QRS: WIDE and BIZARRE, >0.12 sec Ventricular Fibrillation - correct AnswerChaotic Coarse: big waves Fine: small waves Rate: unmeasurable P Wave: NONE PR Interval: N/A QRS: N/A Idioventricular - correct AnswerRegular Rate: 20- P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec Accelerated Idoventricular Rhythm - correct AnswerRegular Rate: 50- P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec 1st Degree AV Block - correct AnswerRegular Rate: 60- P Wave: Present, upright PR interval: >0.20 sec CONSISTENTLY LONG QRS: <0.12 sec Husband stays late till 9 consistently 2nd Degree AV Block Type I Mobitz, Wenckebach - correct AnswerIRREGULAR Rate: 60-

P wave: Present, upright PR Interval: Progressively longer until drop (PR interval longer and longer until drop) QRS: <0.12 sec Husband stays late till 9, then 11, then 1, then doesn't come home at all 2nd Degree AV Block Type II - correct AnswerIrregular or regular Rate: < P wave: Present, upright PR Interval: PR interval consistently LONGER like type 1 but then a QRS will drop QRS: <0.12 sec Husband stays late till 9 consistently, then wife goes out and doesn't come home 3rd Degree AV Block - correct AnswerAtrials and ventricles don't communicate Rate: regular atrial P wave: Present, upright No relationship between P waves and QRS PR Interval: VARIABLE QRS: variable P-P ad R-R consistent but NO correlation Husband and wife live separate lives and don't communicate SA Node - correct Answer1st 60- AV Node - correct Answer2nd 40- Bundle of His - correct Answer3rd 40- Right and Left Bundle Branches - correct Answer4th 40- Purkinje Fibers - correct Answer5th 20- 1 Small Box - correct Answer0.04 sec 1 Big Box - correct Answer0.20 sec Junctional Rhythms - correct AnswerSA Node DID NOT FIRE AV Node fired

NO P WAVE bc SA node didn't fire Narrow QRS P Wave - correct AnswerAmplitude 0.5-2.5 mm Will be shorter than T wave Shows firing of SA node QRS - correct Answer0.06-0.10 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 - correct Answer1500/ # boxes R-R Calculate Irregular Rate - correct Answer# of Rs in 6 sec strip X 10 Unifocal PVCs - correct AnswerOnly 1 shape PVC Bigeminy - correct AnswerPVC occurs every OTHER beat Trigeminy - correct AnswerPVC occurs every THIRD beat Couplet - correct Answer2 PVCs together Triplet - correct Answer3 PVCs together Multifocal - correct AnswerMultiple shapes Monomorphic V Tach - correct AnswerSame Shapes V Tach Polymorphic V Tach - correct AnswerDifferent Shapes V tach Coarse V Fib - correct AnswerChopy but not as high as polymorphic V tach Fine V Fib - correct AnswerFine and fibrillatory Idioventricular Rhythms - correct AnswerOnly purkinje fibers firing WIDE QRS always Atrially Paced - correct AnswerSpike comes before P Ventricularly Paced - correct AnswerSpike comes before QRS and QRS will be wide AV Paced - correct AnswerSpike before P and before QR

Failure to Capture - correct AnswerSpikes with no QRS Failure to Sense - correct AnswerSpikes happen regardless of QRS on their own How to determine the rhythm - correct AnswerRegular or irregular? Rate? P before every QRS? QRS for every P? QRS wide or narrow? QT Interval - correct Answer0.34-0. P Wave - correct Answer0.06-0.12 sec PR Interval - correct Answer0.12-0.20 sec SA Node Firing Rhythms - correct AnswerFires normally @ 60-100 -SR 60- -SB < -ST 100- -SVT 150- AV Node Firing, SA Node Failed Rhythms - correct AnswerFires normally @ 40-60 -Junctional rhythm 40- -Accelerated junctional rhythm 60- -Junctional tachycardia 100- Only Purkinje Fibers Firing Rhythms (Everything else has failed) - correct AnswerFires normally @ 20-50 -Idioventricular 20- -Accelerated idioventricular 50-