SINUS RHYTHMS
Channel: Nursing School Explained
Date: 29/07/2020

This video explains how to interpret normal sinus rhythm, sinus bradycardia, sinus tachycardia, sinus arrhythmia, and sinus pause/arrest in a step-wise approach. The RULES of EKG interpretation are applied to an example of each of one the sinus rhythms. Causes, signs and symptoms, and interventions are discussed, when applicable. 

NORMAL SINUS RHYTHM:
1. Rate: 60-100 bpm
2. Regularity: regular
3. P- waves:
Upright
1 for every QRS complex
4. Intervals
PRI: 0.12-0.20 (3-5 boxes)
QRS: Less than 0.12 (3 boxes)

SINUS BRADYCARDIA:
(**indicates deviation from normal**)
**1. Rate: Less than 60 bpm
2. Regularity: regular
3. P- waves:
Upright
1 for every QRS complex
4. Intervals
PRI: 0.12-0.20 (3-5 boxes)
QRS: Less than 0.12 (3 boxes)

SINUS TACHYCARDIA:
(**indicates deviation from normal**)
**1. Rate: Greater than 100 bpm
2. Regularity: regular
3. P- waves:
Upright
1 for every QRS complex
4. Intervals
PRI: 0.12-0.20 (3-5 boxes)
QRS: Less than 0.12 (3 boxes)

SINUS ARRHYTHMIA:
(**indicates deviation from normal**)
1. Rate: 60-100 bpm, although may be brady- or tachycardic
**2. Regularity: irregular
3. P- waves:
Upright
1 for every QRS complex
4. Intervals
PRI: 0.12-0.20 (3-5 boxes)
QRS: Less than 0.12 (3 boxes)

For more videos about this important topic please refer to the EKG Interpretation playlist of my channel Nursing School Explained. The videos in this playlist are intended to be watched in succession for best results: Basic Electrophysiology, EKG Interpretation - The Basics: EKG paper and Determination of Heart Rate, EKG Interpretation - The Basics - Normal Intervals and RULE to Memorize, Sinus rhythms, Atrial rhythms, AV blocks, and Ventricular rhythms.

EKG INTERPRETATION - THE BASICS:
1. Basic Electrophysiology - a foundation for EKG Interpretation https://youtu.be/dE5cN1exCjE
2. EKG Interpretation - The Basics: EKG paper and Determination of Heart Rate https://youtu.be/tPjpH0d_MC4
3. The Basics - Normal intervals and RULES to memorize https://youtu.be/DZe0v0iRf5c

SINUS RHYTHMS
https://youtu.be/y56ne76ehDY

ATRIAL RHYTHMS
1. Premature Atrial Contractions (PACs) https://youtu.be/ZKB5QagCGXw
2. Atrial Flutter https://youtu.be/dAYX0W52jfU
3. Atrial Fibrillation https://youtu.be/bzlft93cJCQ
4. Supraventricular Tachycardia (SVT) https://youtu.be/DMDOvVgpWak

ATRIOVENTRICULAR RHYTHMS
1. First degree Atrioventricular (AV) Block https://youtu.be/3Ci70fpjT9M
2. Second degree  Atrioventricular (AV) Block (aka Mobitz Type I or Wenckebach) https://youtu.be/AD3XDcO8Ij8
3. Second degree Atrioventricular (AV) Block (aka Mobitz Type II or Classical Heart block)  https://youtu.be/AD3XDcO8Ij8
4. Third degree Atrioventricular (AV) Block or Complete Heart Block https://youtu.be/OS1Jn4Dy1ig

VENTRICULAR RHYTHMS
1. Premature Ventricular Complexes/Contractions (PVCs) https://youtu.be/5OHSdKNO_-U
2. Ventricular Tachycardia (Vtach) https://youtu.be/mWamxIXNhJs
3. Ventricular Fibrillation (VFib) https://youtu.be/4EUBZVxi4gQ
4. Pulseless Electrical Activity (PEA) https://youtu.be/h_JDQPESCXg
5. Asystole (aka ventricular standstill) https://youtu.be/g6cYF7HDyVA