Normal Sinus Rhythm
- Rate of 60 – 100 beats per minute
- Each beat normally has 1 P wave, 1 corresponding QRD complex and 1 T wave
- The R-R interval should be regular and constant
- The P-R interval should be within normal range
1.QRS Rate - 70
2.Rhythm is Regular
3.QRS width <120
4.P waves present
5.P waves for every QRS, QRS for every P wave
6.PR interval is between 120-200
Sinus Arrhythmia
- P wave before every QRS
- Rate may vary with respiration
- More common in athletes and young people
1.QRS Rate – 90-100bpm
2.Rythm is Irregular
3.QRS width <120
4.P waves present
5.There is a P wave for every QRS, QRS for every P wave
6.PR interval 120-200
- Rate of 60 – 100 beats per minute
- Each beat normally has 1 P wave, 1 corresponding QRD complex and 1 T wave
- The R-R interval should be regular and constant
- The P-R interval should be within normal range
1.QRS Rate - 70
2.Rhythm is Regular
3.QRS width <120
4.P waves present
5.P waves for every QRS, QRS for every P wave
6.PR interval is between 120-200
Sinus Arrhythmia
- P wave before every QRS
- Rate may vary with respiration
- More common in athletes and young people
1.QRS Rate – 90-100bpm
2.Rythm is Irregular
3.QRS width <120
4.P waves present
5.There is a P wave for every QRS, QRS for every P wave
6.PR interval 120-200
