EKG Rhythms Questions and Answers Already Passed

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EKG Rhythms Questions and Answers Already Passed Normal Sinus Rhythm 60-100 bpm all complexes normal and evenly spaced (P, QRS, T) Sinus Arrest - SA node doesn't fire - notice absence of P-wave ... for a complete cycle (a missed cycle) 00:0201:28 Sinus arrhythmia all complexes normal but rhythmically irreg - normal finding (esp in young pts) that has to do with breathing (rate: inhale-increase, exhaledecrease) Sinus Bradycardia <60 normal sinus rhythm Sinus Tachycardia >100 (100-150) normal sinus rhythm Wandering atrial pacemaker Hint: try never to pick this - impulse originate from varying points in atria - variation in P wave contour, PR-I, PP-I and thus RR-I P wave vs T wave P generally smaller than T MAT (multifocal atrial tachy) - impulse originates at diff places in atria so P waves diff and intervals might not be consistent - assoc w/ severe pulm dz Atrial Fibrillation A: 350-450 (atria quivering) - irreg-irreg rhythm (R-RI=irreg) *unsure/no P-wave (non-distinguishable)* - irreg rhythm BUT reg QRS! Danger: increase the risk of thromboemoblic events don't convert unless occurring less than 48 hrs, if don't know pt need to be put on thrombolytics) Atrial Flutter A: 250-350 - "saw tooth" p-waves - a continuous rapid sequence of atrial complexes from a single rapid-firing atrial focus (hint: if see 2 P waves and QRS think A Flutter) Junctional Escape beats retrograde atrial depolarization P' is inverted 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 [Show More]

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