ECG of the week 14th December 2022 – Interpretation
This ECG was included as a reminder of the Sgarbossa criteria when evaluating patients with a left bundle branch block and coexisting concerns over myocardial ischaemia. The Smith-modified Sgarbossa rules are summarised below:
- Concordant ST elevation ≥ 1 mm in ≥ 1 lead
- Concordant ST depression ≥ 1 mm in ≥ 1 lead of V1-V3
- Proportionally excessive discordant STE in ≥ 1 lead anywhere with ≥ 1 mm STE, as defined by ≥ 25% of the depth of the preceding S-wave