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20 Cards in this Set
- Front
- Back
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NORMAL (REGULAR) SINUS RHYTHM
- defined on EKG as? |
- Equal Distances btw Identical Waves
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PREMATURE ATRIAL BEAT
- originates how? |
Suddenly
in an IRRITABLE Atrial Automaticity Focus (PAB originates in an irritable atrial automaticity focus which spontaneously fires a depolarization stimulus earlier than the Normal P wave on EKG) |
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PREMATURE ATRIAL BEAT
- produces what type of wave? |
P'-wave earlier than expected
(PAB originates in an irritable atrial automaticity focus which spontaneously fires a depolarization stimulus earlier than the Normal P wave on EKG) |
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PREMATURE ATRIAL BEAT
- on EKG, the earlier-than-expected P'-wave is Atrial Depolarization by? |
- an Automaticity Focus
(PAB originates in an irritable atrial automaticity focus which spontaneously fires a depolarization stimulus earlier than the Normal P wave on EKG) |
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PREMATURE VENTRICULAR CONTRACTION
- PVC originates how? |
- suddenly in an IRRITABLE Ventricular Automaticity focus
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PREMATURE VENTRICULAR CONTRACTION
- PVC produces what on EKG? |
- Giant Ventricular complex on EKG
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TACHYCARDIA: NARROW COMPLEX
- Fast rhythm originates where? - Then goes where? - Causing? |
- Above the AV node
- Enters Regular Conduction system of heart - Ventricular Activation in the usual fashion |
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TACHYCARDIA: NARROW COMPLEX
- what is seen on EKG? x2 |
- QRS < 100 ms
or - QRS < 3 small boxes |
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TACHYCARDIA: WIDE COMPLEX
- the fast rhythm originates where? - what is the end result physiologically? |
- Below the AV node
- Longer Ventricular Activation |
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TACHYCARDIA: WIDE COMPLEX
- what is seen on EKG? x2 |
- QRS > 120 ms
or - QRS > 3 boxes |
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ATRIAL FLUTTER
- results from what etiology? - indicative of what? |
- Reentry in the RIGHT Atrium
(a large circuit) - Underlying Heart Disease |
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ATRIAL FLUTTER
- Effected Rate? - EKG finding x2 |
- Atrial rate of 300 to 350 beats/min
- Varying AV block with - Irregular R-R intervals usually |
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ATRIAL FLUTTER
- If the AV block is fixed, what would be seen on EKG? |
- R-R intervals will be regular
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ATRIAL FIBRILLATION
- most common form of? |
- Arrhythmia
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ATRIAL FIBRILLATION
- results from what etiology? x2 - most often indicates? |
- Micro-Reentry
with - Multiple Circuits in Atria - Underlying Heart Disease |
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ATRIAL FIBRILLATION
- what is seen on EKG? - affected rate? x2 |
- Fibrillatory waves are Ill-defined & continuously change
- continuous chaotic atrial spikes - irregular ventricular rhythm - Atrial rate > 400 beats/min - Ventricular rate is Irregularly Irregular |
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VENTRICULAR TACHYCARDIA
- almost always associated with? - etiology? |
- Heart Disease
- Reentry in the Ventricular myocardium (Purkinje fibers) |
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VENTRICULAR TACHYCARDIA
- what is seen on EKG? - affected rate? |
- Wide QRS complex tachycardia
- Rate > 100 beats / min |
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VENTRICULAR TACHYCARDIA
- always initiated by? - what is present in 90% of patients? |
- PVC
- AV dissociation |
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VENTRICULAR TACHYCARDIA
- what else may be present? x2 |
- Ventricular capture
- Fusion complexes |
