File:IPLab3HealedMyocardialInfarction5.jpg

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IPLab3HealedMyocardialInfarction5.jpg(690 × 450 pixels, file size: 36 KB, MIME type: image/jpeg)

This is a low-power photomicrograph of two sections of myocardial tissue stained with a trichrome stain to demonstrate fibrous connective tissue (blue). The section on the left is from a heart with a recent myocardial infarction. Notice the absence of fibrous connective tissue. The section on the right is from a heart with an old healed infarct and it contains extensive fibrous connective tissue scars.

Myocardial infarction is necrosis of myocardial tissue which occurs as a result of a deprivation of blood supply, and thus oxygen, to the heart tissue. Blockage of blood supply to the myocardium is caused by occlusion of a coronary artery.

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current04:37, 19 August 2013Thumbnail for version as of 04:37, 19 August 2013690 × 450 (36 KB)Seung Park (talk | contribs)This is a high-power photomicrograph of a different region of this healed MI. Note the chronic inflammatory reaction (arrows) in this region suggesting that there had been ischemic injury to this area within the last several weeks to months.
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