A 58-year-old woman presents with acute chest pain. ECG shows left bundle branch block with ST elevation ≥1 mm in leads with a concordant QRS complex. This finding is consistent with which of the following?
- A Acute myocardial infarction by Sgarbossa criteria ✓
- B Benign early repolarization
- C Left ventricular aneurysm
- D Electrolyte abnormality
Correct answer: A. Acute myocardial infarction by Sgarbossa criteria
Explanation
Sgarbossa criteria identify acute MI in the presence of LBBB. The criterion of ST elevation ≥1 mm concordant with the QRS (in leads where QRS is positive) has high specificity for acute MI. Other criteria include ST depression ≥1 mm in V1-V3 and ST elevation ≥5 mm discordant with QRS. This patient requires emergent reperfusion therapy. Benign early repolarization and LV aneurysm do not meet these specific criteria.
Reference: Braunwald's Heart Disease, 12th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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