Second Degree AV (Heart) Block Type I & II
Channel: Nursing School Explained
Date: 26/08/2020

This video discusses the details of second degree degree AV (atrioventricular)/heart blocks  Type I and Type II, their characteristics, causes, signs & symptoms as well as interventions.
Please refer to the “EKG Interpretation - Heart Blocks" Playlist for more videos about first-degree and third-degree heart blocks.

SECOND DEGREE HEART BLOCK TYPE I
(**indicates deviation from normal**)
1. Rate: 
**60-100 bpm, may be less than 60
2. Rhythm:
**“Regularly irregular”
3. P-wave:
**Upright
**May be greater than 1 for every QRS complex
4. Intervals:
**PRI: gets progressively longer until QRS drops
QRS: Less than 0.12

SECOND DEGREE HEART BLOCK TYPE II
(**indicates deviation from normal**)
1. Rate: 
**Less than 60 bpm, usually VERY bradycardic
2. Rhythm:
**Irregular
3. P-wave:
Upright
**Greater than 1 for every QRS complex
4. Intervals:
PRI: constant, may be greater than 0.20 
QRS: Less than 0.12 

For more videos about this important topic please refer to the other EKG Interpretation playlists 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. 

Heart Blocks Playlist:
https://www.youtube.com/playlist?list=PLGq925lbJaozAZjXXNdUvHg2PNwoKWRQQ

First-degree Heart Blocks Type I and II:
https://youtu.be/3Ci70fpjT9M

Third-degree Heart Blocks:
Coming soon!