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RELIAS DYSRHYTHMIA BASIC TEST MASTER REVIEW 2026
Typology: Exams
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โ Sinus Bradycardia. Answer: Regular Rate: < P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec โ Sinus Tachycardia. Answer: Regular Rate: 100- 150 P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec โ Premature Atrial Contraction. Answer: 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
โ Atrial Fibrillation. Answer: IRREGULAR Atrial rate: UNMEASURABLE Ventricular rate: variable P wave: unable to see PR Interval: N/A QRS: <0.12 sec โ A fib RVR. Answer: IRREGULAR Ventricular rate: 100- 175 P wave: unable to see PR Interval: N/A QRS <0.12 sec โ Atrial Flutter. Answer: Usually REGULAR can be irregular Atrial rate: 250- 350 Ventricular rate: variable BUT < atrial rate P Wave: Flutter PR Interval: N/A QRS: <0.12 sec โ Supraventricular Tachycardia. Answer: Regular Rate: 150- 350
โ Premature Ventricular Contraction. Answer: IRREGULAR Rate: refer to underlying rhythm P Wave: NONE PR Interval: N/A QRS: WIDE and BIZARRE , >0.12 sec โ Ventricular Tachycardia. Answer: Regular Rate: > P Wave: NONE PR Interval: N/A QRS: WIDE and BIZARRE, >0.12 sec โ Ventricular Fibrillation. Answer: Chaotic Coarse: big waves Fine: small waves Rate: unmeasurable P Wave: NONE PR Interval: N/A QRS: N/A โ Idioventricular. Answer: Regular Rate: 20- 50
P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec โ Accelerated Idoventricular Rhythm. Answer: Regular Rate: 50- 100 P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec โ 1st Degree AV Block. Answer: Regular Rate: 60- 100 P Wave: Present, upright PR interval: >0.20 sec CONSISTENTLY LONG QRS: <0.12 sec Husband stays late till 9 consistently โ 2nd Degree AV Block Type I Mobitz, Wenckebach. Answer: IRREGULAR Rate: 60- 100 P wave: Present, upright
QRS: variable P-P ad R-R consistent but NO correlation Husband and wife live separate lives and don't communicate โ SA Node. Answer: 1st 60 - 100 โ AV Node. Answer: 2nd 40 - 60 โ Bundle of His. Answer: 3rd 40 - 45 โ Right and Left Bundle Branches. Answer: 4th 40 - 45 โ Purkinje Fibers. Answer: 5th 20 - 50 โ 1 Small Box. Answer: 0.04 sec
โ 1 Big Box. Answer: 0.20 sec โ Junctional Rhythms. Answer: SA Node DID NOT FIRE AV Node fired NO P WAVE bc SA node didn't fire Narrow QRS โ P Wave. Answer: Amplitude 0.5-2.5 mm Will be shorter than T wave Shows firing of SA node โ QRS. Answer: 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) โ Calculate Regular Rate. Answer: 1500/ # boxes R-R โ Calculate Irregular Rate. Answer: # of Rs in 6 sec strip X 10
โ Idioventricular Rhythms. Answer: Only purkinje fibers firing WIDE QRS always โ Atrially Paced. Answer: Spike comes before P โ Ventricularly Paced. Answer: Spike comes before QRS and QRS will be wide โ AV Paced. Answer: Spike before P and before QR โ Failure to Capture. Answer: Spikes with no QRS โ Failure to Sense. Answer: Spikes happen regardless of QRS on their own โ How to determine the rhythm. Answer: Regular or irregular? Rate? P before every QRS? QRS for every P? QRS wide or narrow? โ QT Interval. Answer: 0.34-0.
โ P Wave. Answer: 0.06-0.12 sec โ PR Interval. Answer: 0.12-0.20 sec โ SA Node Firing Rhythms. Answer: Fires normally @ 60-100
