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Sgarbossa Criteria

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Sgarbossa Criteria, Sgarbossa Concordance, Sgarbossa

  • See Also
  1. Left Bundle Branch Block
  2. High Risk Acute Coronary Syndrome Management
  3. Myocardial Infarction Assessment
  4. Electrocardiogram
  • Indications
  1. EKG criteria for diagnosis of acute Myocardial Infarction when Left Bundle Branch Block is present
  • Criteria
  • Sgarbossa
  1. ST Segment Elevation of 1 mm or more if in same direction (concordant) as QRS Complex in any lead
    1. Score: 5 Points
  2. ST segment Depression of 1 mm or more in any lead from V1 to V3
    1. Score: 3 Points
  3. ST Segment Elevation of 5 mm or more in opposite direction (discordant) of QRS Complex
    1. Score: 1 Point
  • Criteria
  • Modified Sgarbossa (first 2 criteria are the same as with Sgarbossa)
  1. ST Segment Elevation of 1 mm or more if in same direction (concordant) as QRS Complex in any lead
    1. Score: 5 Points
  2. ST segment Depression of 1 mm or more in any lead from V1 to V3
    1. Score: 3 Points
  3. ST Segment Elevation / S-wave amplitude = -0.25 (modified from original Sgarbossa)
    1. Score: 1 Point
  4. References
    1. Smith (2012) Ann Emerg Med 60(6): 766-76 +PMID:22939607 [PubMed]
    2. Meyers (2015) Am Heart J 170(6): 1255 – 1264 [PubMed]
  • Interpretation
  1. Score of 3 or more suggests acute Myocardial Infarction
  2. Primarily focuses on the concordance of ST and QRS polarity (typically opposite or discordant in normal LBBB)
  • Efficacy
  1. Test Specificity: 90%
  2. Test Sensitivity: 20%
  • References
  1. Sgarbossa (1996) NEJM 334(8):481-7 [PubMed]