ACLS Revision: Is this Anteroseptal ischemia or Posterior MI?

Posterior MI

  • 4-10% of STEMIs are isolated posterior STEMI
  • Most common type of missed MIoften misdiagnosed as NSTEMI
  • The triad of ST depressions, upright Ts, and tall R waves (basically the equivalent of Q-waves) in V1-3 is suggestive of a Posterior MI
  • Only 30% are revascularized in 90 minutes
  • Usually associated with inferior or lateral MI due to RCA or circumflex occlusion


Emergency Medicine Kenya Foundation (EMKF) is an NGO supporting emergency healthcare providers across Kenya to save lives by strengthening the emergency healthcare system through capacity building, knowledge development, advocacy and research.