Sinus Bradycardia
= sinus conduction + Slower Rate
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Slower Rate = Less than 60 bpm
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Sinus conduction
1)P-wave
- Positive in Lead I/II/avF
- Negative in Lead avR/V1
- Follow by QRS in every P-wave
2)PR-interval
- Less than 5 little boxes
- means no blockage
3)QRS complex
- Follows every P-wave
- Less than 3 little boxes
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