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21 Cards in this Set
- Front
- Back
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Rapid Interpretation Method (quick)
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RATE
RHYTHM AXIS HYPERTROPHY INFARCTION |
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Rapid Interpretation Method (full)
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RATE
300/150/100/75/60/50 RR in 6s strip x10 ventricular rate atrial rate RHYTHM P before QRS QRS after P PR interval QRS interval AXIS Limb Lead direction Chest Lead isoelectric point HYPERTROPHY Atrial - P (V1) RVH - R (V1) LVH - S (V1), R (V5) INFARCTION Q waves Inverted T waves ST elevation/depression |
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Rates of automaticity foci
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SA node - 60-100
Atrial foci - 60-80 AV jxn - 40-60 Ventricular - 20-40 EMERGENCY (all) - 150-250 |
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Anatomical groupings of leads
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Right - V1, V2
Septal - V3, V4 Left - V5, V6 Lateral - I, AVL Inferior - II, III, AVF |
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Broad Categories of Arrhythmias
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Irregular rhythms
Escape Premature Beats Tachy-Arrhythmias Heart Blocks |
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Irregular Rhythms
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Wandering Pacemaker
Multifocal Atrial Tachycardia Atrial Fibrillation |
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Wandering Pacemaker
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*some atrial foci
P' shape varies Atrial rate < 100 Irregular ventricular rhythm |
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Multifocal Atrial Tachycardia
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*wandering pacemaker w/ tachy
**seen in COPD, Digitalis toxicity P' shape varies Atrial rate > 100 Irregular ventricular rhythm |
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Atrial Fibrillation
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*continuous firing of multiple atrial foci
**atria not completely depol **only occasional depol through AV Chaotic atrial spikes=NO P WAVES Irregular ventricular rhythm |
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Escape (pathologies)
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*automaticity focus paces
Escape Rhythms - Atrial/Jxnl/Ventricular Escape Beats - Atrial/Jxnl/Ventricular |
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Inverted P waves
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Retrograde depolarization
(from jxnl focus) *Junctional Escape beat/rhythm |
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Likely cause of ventricular escape beat
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PSNS surge (inhibits SA, atria, jxn, but not ventricular foci)
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Atrial Escape Rhythm
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Pause -->
P' waves differ from P waves Slower rate (60-80) |
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Junctional Escape Rhythm
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*Failed SA/Atria OR conduction block to prox AV node
Pause --> No P OR inverted P before/after/buried Slower (40-60)...or faster |
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Ventricular Escape Rhythm
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*Failed SA/Atria/Jxn OR conduction block below AV
No P waves Slow rate (20-40) Enormous QRS |
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Atrial Escape Beat
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Pause --> 1 beat w/ different P'
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Junctional Escape Beat
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Pause --> 1 beat w/ no P or
inverted P before/after/buried |
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Ventricular Escape Beat
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Pause --> Enormous QRS
*PSNS surge |
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Causes of ventricular irritability
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Low O2
Low K+ |
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Definition of VT
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>3 PVCs in a row
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Definition of Sustained VT
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VT > 30s
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