Clin Lab - EKG Part 2 Flashcards
1
Q
What is the normal mean electrical vector for the QRS wave?
A
Toward right shoulder (away from lead II), toward left hip (toward lead II), Toward left shoulder (away from lead II)
2
Q
What are the two main causes of axis deviation?
A
- Hypertrophy–> towards to hypertrophy
- Infarction–> pulls way from infarction
3
Q
Which leads are used to determine axis?
A
Leads I & aVF
4
Q
Depolarization can be affected by several factors..
A
- depolarization will be stronger if there is more muscle (hypertrophy)
- depolarization will move away from necrotic tissue (infarction)
5
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A
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13
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