ST elevation myocardial infarction gross pathology

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Myocardial infarction
Myocardial infarction, fibrosis. Right Coronary Artery's territory
ICD-10 I21-I22
ICD-9 410
DiseasesDB 8664
MedlinePlus 000195
eMedicine med/1567  emerg/327 ped/2520

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]

Myocardial infarctions can be classified temporally from clinical and other features, as well as according to the pathological appearance as:[1]

  1. Evolving phase of myocardial infarction: (>6 hours),
  2. Acute phase of myocardial infarction: (6 hours – 7 days),
  3. Healing phase of myocardial infarction: (7–28 days),
  4. Healed phase of myocardial infarction: (29 days and beyond).

Time from Onset and Gross Morphologic Finding Relations

  • 18 - 24 hours: Pallor of myocardium
  • 24 - 72 hours: Pallor with some hyperemia
  • 3 - 7 days: Hyperemic border with central yellowing
  • 10 - 21 days: Maximally yellow and soft with vascular margins
  • 7 weeks: White fibrosis

Gross Pathological Findings

Images courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology

References

  1. Thygesen K, Alpert JS, White HD; et al. (2007). "Universal definition of myocardial infarction". Circulation. 116 (22): 2634–53. doi:10.1161/CIRCULATIONAHA.107.187397. PMID 17951284. Unknown parameter |month= ignored (help)

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