The money is in the ECG. This is a MOBITZ II with a 2:1 Block
The problem with Mobitz II blocks like this is that they can deteriorate into a complete heart block.
The patient had a pacemaker inserted.
In last week’s EMQA we spoke about a 2:1 block where the p waves were hidden in the T waves. These are not hidden.
CAUSES OF MOBITZ BLOCKS
- His-Purkinge System Failure below AVN
- Conduction System Fubrosis
- Drug related: Amiodarone, Beta blockers, Calcium Channel Blockers, Digoxin
- Inflammatory/Autoimmune: Myocarditis, Rheumatic Fever, SLE
If you are a member of the Cardiac Bootcamp Self Study Course, go to the section on Mobitz Blocks and review.