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Normal Sinus Rhythm
• Rate: 60 -‐ 100 bpm • Rhythm: Regularly Regular • P wave: Present • P:QRS raFo: 1 to 1 • PR-‐interval: Normal • QRS Width: < 120 ms (0.12 sec)
Sinus Arrhythmia
• Rate: 60 -‐ 100 bpm • Rhythm: Varies with respiraFon • P wave: Present • P:QRS raFo: 1 to 1 • PR-‐interval: Normal • QRS Width: < 120 ms (0.12 sec)
Sinus Bradycardia
• Rate: < 60 bpm • Rhythm: Regularly-‐Regular • P wave: Present • P:QRS raFo: 1 to 1 • PR-‐interval: Normal • QRS Width: < 120 ms (0.12 sec)
Sinus Tachycardia
• Rate: > 100 bpm • Rhythm: Regularly-‐Regular • P wave: Present • P:QRS raFo: 1 to 1 • PR-‐interval: Normal • QRS Width: < 120 ms (0.12 sec)
Sinus Pause/Arrest
• Rate: Varies • Rhythm: Irregular • P wave: Present except for pause • P:QRS raFo: 1 to 1 • PR-‐interval: Normal • QRS Width: < 120 ms (0.12 sec)
Sinus Block
• Rate: Varies • Rhythm: Regularly -‐ Irregular • P wave: Present except for “dropped beat” • P:QRS raFo: 1 to 1 • PR-‐interval: Normal • QRS Width: < 120 ms (0.12 sec)