...continued from first explanation...
There are altogether 2 main coronary arteries, the right and the
left...
Let's make up some initials to get things going easily...
Right Coronary Artery (RCA)
Left Coronary Artery (LCA)
Please note that these are the two major branch, they will branch
out to smaller arteries which serves the whole portion of the
heart...
When an artery clogs up, the area before the clogging gets all the
nutrition, and their waste products gets transfered out from that
area...
But the area after the clogging gets no blood, or little blood,
hence the active heart which requires a lot of oxygen and energy
cannot function. Aside from that, toxic waste which is supposed to
be transferred out stays there and accumulates behind leading to
cell injury. Cell lacking of oxygen is called ischemia, and if this
results in injury, the term is infarction, and if not intervene,
the cell will die, which is then called necrosis.
During an infarction, the patient will present with symptoms of
heart attack, such as fever, sweating, shortness of breath,
giddiness, chest pain radiating to the left arm, general discomfort
and a feeling of fainting...
These are important signs to look out for and to initiate the
emergency system mentioned above...
