Quick Review- Sinus Rhythms: What you Need to Know

Sinus rhythms originate from the Heart's Sinus Node (SA Node).

This video will discuss the different types of sinus rhythms.

This video will cover the following:

✅ Normal Sinus Rhythm

✅ Sinus Bradycardia

✅ Sinus Tachycardia

NORMAL SINUS RHYTHM Rate: 60-100/min

Rhythm: Regular

P waves: Present with 1:1 Conduction

PR interval: 3-5 Small boxes (0.12 -0.20 seconds)

QRS: narrow (≤ 3 boxes or ≤ 0.12 seconds)

SINUS BRADYCARDIA

Rate: < 60/ min

Rhythm: Regular

P waves: Present with 1:1 Conduction

PR interval: 3-5 Small boxes (0.12 -0.20 seconds)

QRS: narrow (≤ 3 boxes or ≤ 0.12 seconds)

SINUS TACHYCARDIA

Rate: > 100/ min

Rhythm: Regular

P waves: Present with 1:1 Conduction

PR interval: 3-5 Small boxes (0.12 -0.20 seconds)

QRS: narrow (≤ 3 boxes or ≤ 0.12 seconds)

Disclaimer: This video is for educational purposes and is not intended as medical advice. While we strive for 100% accuracy, errors may occur, and medications or protocols may change over time.