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18 Cards in this Set
- Front
- Back
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Intrinsic rate of Purkinje Fibers |
20-40 bpm |
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How do QRS complexes look in ventricular rhythms? |
Abnormally shaped and prolonged(>0.12 sec) |
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Direction of T Waves in ventricular rhythms |
Opposite of QRS |
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Irritable focus within the ventricles fires prematurely to initiate a single ectopic complex |
PVC |
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How are PVCs characterized? (3) |
1. Earlier than expected sinus beat 2. QRS >0.12 sec 3. T wave in opposite direction of QRS complex |
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Electrical impulse from a supraventricular site fires at the same time as an ectopic site in the ventricles. Do not look like normally conducted beats or ventricular beats
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Fusion Beat |
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PVCs that occur all look the same |
Unifocal PVCs |
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PVCs that occur look different |
Multifocal PVCs |
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T wave does not return to baseline before a PVC fires |
R on T Phenomenon |
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When there are three or more PVCs in a row |
Run (or burst) of Ventricular Tachycardia (VT) |
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What makes PVCs malignant? (5) |
1. Frequent (6+/minute) 2. R on T Phenomenon 3. Couplets/runs of VT 4. Multifocal PVCs 5. PVCs associated with chest pain |
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What are the two drugs used to treat malignant PVCs? |
Lidocaine and Amiodarone |
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Late beat that occurs when a supraventricular pacemaker fails to fire |
Ventricular escape beat |
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Supraventricular pacemakers fail, and ventricles assume pacing responsibility |
Idioventricular rhythm (IVR) |
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How is an idioventricular rate with a pulse treated? |
Try Atropine and pace |
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Any organized rhythm without a pulse |
Pulseless electrical activity (PEA) |
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What three rhythms are not considered PEA if there is no pulse? |
1. Asystole 2. V Fib 3. V Tach |
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What is the treatment for PEA? |
CPR and find the cause |
