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    Sgarbossa's Criteria for MI in Left Bundle Branch Block

    Criteria to diagnose acute MI in patients with prior LBBB.
    Favorite
    Pearls/Pitfalls

    It's often difficult to identify an MI for patients with existing left bundle branch blocks (LBBB). About 1 in 200 patients with MI have LBBB. Sgarbossa's is a well accepted approach at determining which LBBB are having an MI.

    No
    0
    Yes
    +5
    No
    0
    Yes
    +3
    No
    0
    Yes
    +2

    Result:

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    Next Steps
    Evidence
    Creator Insights

    Advice

    A score of 3 or more is 90% specific for MI, but not sensitive (36%). Therefore a positive score should be acted upon, but a lower score can not by itself rule out MI - maintain a high index of suspicion if the presentation is consistent with MI.

    About the Creator
    Dr. Elena Sgarbossa
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