EKG overview.docx - Lead Placement White right(RA Red to Ribs(LL Smoke over fire(LA The Cardiac Conduction System SA Node The Normal Pacemaker AV Node

EKG overview.docx - Lead Placement White right(RA Red to...

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Lead PlacementWhite right (RA)Red to Ribs (LL)Smoke over fire (LA) The P wave is atrial depolarization. The QRS wave is the ventricle depolarization The T wave is repolarization of the Ventricle The U wave is rarely ever seen.The Cardiac Conduction System SA Node- The Normal Pacemaker AV Node- Accepts the impulse, holds it shortly and releases it. May act as back up pacemaker. Bundle Branches- High speed conduction system to the ventricles Purkinje Fibers- Tells the ventricle to contract. Last ditch pacemaker
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Analysis Each Rhythm Strip for: Heart rate-normal/ fast/slow (below 60=Bradycardia, 60-100normal, 100-150Tachy,150+) Rhythm-regular orirregular (any missed orextra beats) P wave: size and shapenormal (upright, all looksimilar, regular spacing) P/QRS:1:1 relationship (isthere a QRS for every P wave?) PR interval-3-5 small boxes (from the start of the P wave to start of QRS) QRS complex:is it wide or narrow (<3 small boxes) Heart rate parameters: Bradycardia- Heart rate < 60Tachycardia- Heart rate > 100 –Heart rate > 150 poor perfusionDetermining HR on an ECG:
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  • Fall '15
  • Rothwell

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