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EKG's
adult health 2
10
Nursing
Undergraduate 4
09/03/2009

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Cards

Term
P Wave
Definition
Depolarization of the atria
Term
PR segment
Definition
No electrical activity as the impulse conducts through the AV node so there is a flat line
Term
QRS complex
Definition
Depolarization of the ventricles
Term
ST segment
Definition
short line following the QRS complex where repolarization begins
Term
T wave
Definition
electrical activity of ventricular repolarization
Term
PR interval
Definition

time it takes for the SA node to fire, depolarize the atria and slowly pass throught the AV node.

.12 - .20 sec

Term
QRS duration
Definition

time it takes for the ventricles to depolarize

.10 sec or less

Term
QT interval
Definition
the measurement of ventricular depolarization and repolarization
Term
U wave
Definition
repolarization of the purkinje fibers
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