Lectures 7 and - Normal Sinus Rhythm vs Normal Sinus Arrhythmia
4 important questions on Lectures 7 and - Normal Sinus Rhythm vs Normal Sinus Arrhythmia
What is a normal sinus rhythm?
- P waves in front of every QRS complex
- Constant PR interval
- P wave positive in lead II
What is sinus arrhythmia?
How does sinus arrhythmia happen?
- Inspiration = increase in HR
- Expiration = decrease in HR
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How do we diagnose normal ECG and arrhythmia?
- Are all 5 waves present?
- RR interval (too close = tachycardia, too far = bradycardia)
- Consistent intervals between waves?
- Association/correlation between P and QRS complex?
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