FRCEM SBA (Final) Practice Questions - FRCEM SBA (Final) Examination Exam

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A 68-year-old man attends the ED with central chest pain. ECG shows new left bundle branch block and he is haemodynamically stable. Using the Sgarbossa criteria, which ECG finding is MOST specific for acute myocardial infarction in the presence of LBBB?

Concordant ST elevation ≥1 mm in a lead with a positive QRS Discordant ST depression ≥1 mm in lead V1 only T-wave inversion in the lateral leads QRS duration greater than 160 ms

Correct Answer:

Concordant ST elevation ≥1 mm in a lead with a positive QRS

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