What is a heart attack?
The sudden closure of a coronary artery leads to a heart attack!
On the walls affected by atherosclerosis of the coronary arteries, it is usually the healing of mild irritation or injury of Core inner wall the deposition of small, flat blood clots, but not close the vessel and the dissolved or converted to scar later. Only through the pathological formation of an excessively large blood clot, a clot can be completely closed to the coronary artery suddenly.
Cross section of a coronary artery
The plaque has torn and hemorrhagic, the blood is concentrated
Cross-section of a coronary artery in acute myocardial infarction.
The plaque is Hemorrhagic and blocked the blood through the clot.
This occurs virtually only modified by arteriosclerosis and usually already narrowed vessel sections on. An essential prerequisite is the tearing of a plaque or at least a two-dimensional damage Aderinnenhaut (endothelial lesion). It then comes to a heart attack. It is important to know that only small parts of the narrowed coronary arteries caused heart attacks can also, if the atherosclerotic vessel wall has a disorder such significant that there are blood clots and can hold large one.
Scheme of a heart attack
When this vessel closure "stuttered," that is in turn formed by closing and reopening, go to the heart attack symptoms for days anfallseise ahead sometimes. But when it comes to a sudden closure, so the infarction occurs unexpectedly and without any prior evidence. Once the affected area of the heart muscle (myocardium) no blood, ie, nutrients and oxygen no longer receive any, he is permanently damaged few after hour and listening to inflate. In the healing of damaged heart muscle grows back, unfortunately not, but it is a scar formed in its place. Such an infarct scar tears and not burst, it does not pump as well. The remaining myocardium must be working for this lost heart muscle tissue take.
The sooner the locked coronary vessel in the hospital can be reopened, the smaller is the heart attack.
The extent of the damage depends on the size and significance of coronary artery closed, and the existence of any auxiliary arteries (collaterals) from. The size of the scar, that is, the size of myocardial infarction determines the remainder of the pumping force of the heart and therefore its performance. Of the remaining amount of myocardium ahor hangs in the length from the other life (as if tomorrow we do not fall victim to an accident!).
Heart rhythm disorders are often fatal. Only one equipped emergency or hospital doctor can treat them.
At the death of heart muscle, it is often the occurrence of fatal heart rhythm disturbances. There might be a slow (brady carden) or rapid heartbeat (tachycardia, tachycardia, ventricular fibrillation) to a complete cardiac arrest come by. These heart rhythm disturbances can specially equipped ambulance or doctor in the ICU successfully treated by only one. For more information: How is it treated heart attack?
Measured against the overall course of the decades of atherosclerosis heart attacks come fortunately very rare to just and repeat, if at all, usually only a distance of many years, in particular, preventive treatment is initiated when.
The sudden closure of a coronary artery leads to a heart attack!
On the walls affected by atherosclerosis of the coronary arteries, it is usually the healing of mild irritation or injury of Aderinnenwand the deposition of small, flat blood clots, but not close the vessel and the dissolved or converted to scar later. Only through the pathological formation of an excessively large blood clot, a clot can be completely closed to the coronary artery suddenly.