Cardiomyocytes, the cells responsible for the beating of the heart, are essential to repairing the heart after injury. But after injury, such as a heart attack, many of these cells are irreversibly lost; they've been turned into scar tissue cells. The replacement of these lost cells with pat...
If a heart attack has been proven not to have occurred, that is a heart attack has been "ruled out," further evaluation of the heart may be undertaken usingstresstests,echocardiography, CT scans, or heart catheterization. The decision as to which test(s) to use, needs to be individualized...
Increasedrisk of another heart attack:Once destroyed, the portion of the heart that's damaged will form scar tissue. This tissue cannot contract as healthy tissue does, which can prevent the heart from pumping normally and increase the possibility of another heart attack. Challenges with everyday ...
Symptoms of a heart attack or MI may include chest discomfort often described as apain, pressure, or tightness associated with shortness of breath, sweating, andnausea. The goal for medical care is to restore blood supply back to the heart as soon as possible -- that time is measured in ...
Heart muscle that loses its blood supply and is damaged because of a heart attack is replaced by scar tissue. Depending upon how much muscle is damaged, the heart may no longer be able to beat as strongly and efficiently as before. The heart may not be able to pump blood to all parts...
Scar tissue formed in the heart muscle contributes to the lasting physiological damage caused by a heart attack.A team of medical researchers has now uncovered details about scar tissue production that could lead to treatments that limit this damage(Nat.Cell Biol,DOI:10.1038/ncb1811).Chemical...
Following a heart attack, connective tissue cells called fibroblasts secrete a variety of proteins that combine to form scar tissue. The vast majority of these proteins are collagens, of which there are 26 types, all functioning as a kind of glue that holds the body together. ...
Unlike other tissues, heart muscle cells do not regenerate after a heart attack. Instead, fibroblasts create scar tissue that can impair the heart's ability to pump blood. Although the immune system's response to heart damage plays a crucial role in recovery, when the inflammation triggered by...
The information below will help you understand what it means when the blood flow to a section of the heart suddenly stops and why this can happen. If you think you or somebody near you is having a heart attack because they are displaying the below-descri
but not a lot. Almost like Goldilocks not too much and not too little, but just the right amount. Too much scar, blockage forms. Too little scar. the stent is too close to the blood and that may cause a clog and a heart attack. So, it takes fine tuning to get that Goldilocks ste...