Heart Block Flashcards
1
Q
Which section of the ECG is related to heart block?
A
The PR interval >0.12s
2
Q
What is 1st degree heart block?
A
All atrial impulses are conducted but with delay, PR>0.12s
3
Q
What are the 3 types of 2nd degree HB?
-Mobitz I: Wenkebach
-Mobitz II
-2:1 Block
A
Mobitz I: progressive prolongation of the PR interval until a P-wave is not conducted.
Mobitz II: Intermittent dropped beats + constant PR interval
2:1: Every other P-wave is conducted
4
Q
What is 3rd degree heart block?
A
Atria and ventricles beat independently of each other
Pacemaker required
