Muneer Jan on Instagram: "ECG Evolution in Myocardial Infarction (MI) – Evidence-Based Timeline The ECG changes in MI evolve over time. Recognizing the sequence helps in diagnosis and staging the infarct: ⸻ ✅ 0–12 Hours (Acute Phase) ST-Segment Elevation • Indicates acute transmural injury. • Seen in ≥2 contiguous leads. • Often accompanied by hyperacute T waves early. ⸻ ✅ 12 Hours – 1 Week (Evolving Phase) Pathological Q Waves develop • Depth >25% of R wave or duration ≥0.04 sec. • Sign of irre
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Muneer Jan on Instagram: "ECG Evolution in Myocardial Infarction (MI) – Evidence-Based Timeline The ECG changes in MI evolve over time. Recognizing the sequence helps in diagnosis and staging the infarct: ⸻ ✅ 0–12 Hours (Acute Phase) ST-Segment Elevation • Indicates acute transmural injury. • Seen in ≥2 contiguous leads. • Often accompanied by hyperacute T waves early. ⸻ ✅ 12 Hours – 1 Week (Evolving Phase) Pathological Q Waves develop • Depth >25% of R wave or duration ≥0.04 sec. • Sign of irre
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