Myocardial infarction and complete heart block

• Inferior MI
• a block above the bifurcation [1]
• Complete Heart Block (III AV block) is transitory [1]
• dont require pacing [1]
• the patients had no Stokes-Adams attacks** [1]
• Pacemakers generally should not be implanted with inferior MI if the peri-infarctional AV block is expected to resolve or is not expected to negatively affect long-term prognosis [2]
• Anteroseptal myocardial infarction
• a bilateral bundle branch block (below the bifurcation) [1]
• severe Stokes-Adams attacks [1]
• require pacing [1]

**Stokes Adams attack: Sudden collapse into unconsciousness due to a disorder of heart rhythm

References

1. Can Med Assoc J. 1970 Apr 11; 102(7): 705–708. Myocardial Infarction and Complete Heart Block J. F. Lopez, M. Mori, and B. L. Baltzan
2. ACC/AHA/HR, Guidedline Device-Based Therapy of Cardiac Rhythm Abnormalities