QUESTION: bundle of his - ANSWER-ability to self initiate electrical activity
- 40-60 bpm
QUESTION: purkinje fibers - ANSWER-network of fibers that carry electrical impulse to
ventricular muscle cells
- 20-40 bpm
QUESTION: NSR
Brady
Tachy
SVT
3
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Junctional
Ventricular rhythm - ANSWER-NSR 60-100
Brady 40-60
Tachy >100
SVT >150
Junctional 40-60
Ventricular rhythm 20 - 40
QUESTION: PR interval - ANSWER-0.12-0.20
beginning of p to beginning of qrs
QUESTION: qrs interval - ANSWER-< 0.12
beginning of q to end of s
QUESTION: qt interval - ANSWER-beginning of q to end of t
- heart rate dependent
QUESTION: is rhythm regular or irregular - ANSWER-measure interval between R waves
4
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