Sgarbossa's criteria are a set of electrocardiographic findings generally used to identify myocardial infarction (also called acute myocardial infarction or a "heart attack") in the presence of a left bundle branch block (LBBB) or a ventricular paced rhythm.
A scoring system, now commonly called Sgarbossa criteria, was developed from the coefficients assigned by a logistic model for each independent criterion, on a scale of 0 to 5.
[2] A subsequent meta-analysis of 10 studies consisting of 1614 patients showed that a Sgarbossa score of ≥3 had a specificity of 98% and sensitivity of 20%.
[5] Several other studies have evaluated the usefulness of different ECG findings in diagnosing MI when LBBB is present.
[6] Smith modified Sgarbossa rule: Wackers et al. correlated ECG changes in LBBB with localization of the infarct by thallium scintigraphy.