A thrombus may form on top of a healed myocardial infarct (i.e. scar tissue) because:?Question 14Select one:a.The healed infarct would lead to laminar blood flow.b.Exposing collagen (in the scar) to the blood (in the heart) can initiate platelet aggregation.c.The healed infarct would lead to blood hypocoagulability.d.Scar tissue would increase prostacyclin release from endothelial cells.e.The scar is likely to rupture, leading to release of lipid into the bloodstream.
Question
A thrombus may form on top of a healed myocardial infarct (i.e. scar tissue) because:?Question 14Select one:a.The healed infarct would lead to laminar blood flow.b.Exposing collagen (in the scar) to the blood (in the heart) can initiate platelet aggregation.c.The healed infarct would lead to blood hypocoagulability.d.Scar tissue would increase prostacyclin release from endothelial cells.e.The scar is likely to rupture, leading to release of lipid into the bloodstream.
Solution
The correct answer is:
b. Exposing collagen (in the scar) to the blood (in the heart) can initiate platelet aggregation.
Here's why:
When a myocardial infarct heals, it leaves behind scar tissue. This scar tissue is made up of collagen. When this collagen is exposed to the blood flowing in the heart, it can initiate platelet aggregation. Platelets are small blood cells that play a crucial role in blood clotting. When they come into contact with collagen, they become activated and start to clump together, forming a thrombus (blood clot). This is a normal part of the body's response to injury, but in the case of a healed myocardial infarct, it can lead to problems if the thrombus becomes large enough to block blood flow.
Similar Questions
If the following stages in the aetiology, pathogenesis, healing and possible complications of a myocardial infarct were put in order, which would be 2nd?Question 8Select one:a.Myocardial Ischemiab.Large thrombus forming on top of an ulcerated atheroma within a coronary artery.c.Generation of mature scar tissue.d.Myocardial Infarction (necrosis)e.Thrombus formation within the left ventricle of the heart (due to stasis and collagen exposure).
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