Block
2nd Degree AV Block, Mobitz II
Constant PR with sudden dropped QRS. High risk of progressing to complete block.
LEAD II · 25 mm/sMobitz II
Characteristics
- PR interval
- Constant
- Conduction
- Intermittently dropped QRS (e.g., 3:2, 4:3)
Common causes
- Anterior MI
- Infranodal conduction disease
ACLS treatment
- 1Transcutaneous pacing; prepare for transvenous pacing. Atropine often ineffective.