Salim Rezaie and the crew at R.E.B.E.L EM have kindly published a nice appraisal of a recent Retrospective study seeking to externally validate the Modified Sgarbossa Criteria. These rules guide interpretation of ECG ischaemia in LBBB.
This article gives a useful run down of the criteria and how to use them, as well as taking us through a critical appraisal - useful for anyone approaching FCEM.
Check out the blog here: Modified Sgarbossa Criteria: Part Deux