ZyraDoc #19 - August 20, 2026

A 56-year-old man presents with 90 minutes of severe retrosternal crushing chest pain radiating to his left jaw, diaphoresis, and shortness of breath.

His 12-lead ECG demonstrates 3 mm ST-segment elevation in leads V1-V4 with reciprocal ST depression in leads II, III, and aVF.

The ED intern initiates dual antiplatelet therapy and IV heparin, but suggests waiting 2 hours for cardiac troponin results before contacting cardiology.

Case Summary

Clinical Focus:

A 56-year-old male presents with acute anterior ST-Elevation Myocardial Infarction (STEMI) requiring emergent coronary reperfusion.

Diagnostic Features of STEMI:

Ischemic chest pain: Retrosternal crushing pressure lasting > 20 minutes
ECG criteria: New ST-segment elevation at the J-point in at least 2 contiguous leads (at least 2 mm in V2-V3 for men, at least 1 mm in other leads)
Reciprocal ST-segment depressions in opposing vascular territories

STEMI is a time-critical diagnosis that requires immediate emergency cardiac catheterization team activation without waiting for biomarker confirmation.

Here is the Management Strategy:

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