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25 Cards in this Set
- Front
- Back
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PR interval for a healthy human is what?
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.12-.20 seconda
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what makes the PR interval
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the signal traveling through the AV node
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what initiates the P wave?
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depolarization of the SA node leading to the depolarization of the atria
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what is the inherent rate of the Purkinje fibers (for automaticity)
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20-40
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does the myocardium have automaticity? what is its rate?
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IT DOESNT HAVE AUTOMATICITY
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if a signal travels toward a electrode do you get a positive or negative deflection?
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positive (upward)
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V1 (in general terms) points in what direction?
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down and right
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V6 (in general terms) points in what direction?
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up and left
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Please draw V1 on a normal ECG
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please draw a normal V6 ECG
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what is the first downstroke by definition?
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Q wave
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what is the peak of the first upstroke by definition?
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R wave
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what is the S wave?
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the depth of the Q wave
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What is the normal transition zone on an EKG
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V2/V3/V4
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in what clinical scenario would you see an early transition zone? What is an early transition zone?
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MI
it is when the transition zone occurs before V3/4 |
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what is Poor R Wave Progression?
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as you move from lead V1 to V6 the R wave should get larger until it dominates the S wave at V6
if this does not occur, you have poor R wave progression |
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draw eintovens triangle
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draw eintovens triangle
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draw the hexaxial triangle
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draw eintovens triangle
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draw eintovens triangle
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draw eintovens triangle
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is lead one dominantly positive or negative?
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positive
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is lead aVF dominantly positive or negative?
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positive
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what are the best leads for examining the bottom of the heart? (aka what are the inferior leads)
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III
II aVF |
