Explanation:
Fainting is known as lipotimias, syncopes or presyncopes, when knowledge is not lost. They occur when not enough blood reaches the brain in a situation of transient hypotension, in which the regulatory mechanisms that redistribute blood to the brain to maintain oxygen fail. "It is the lack of cerebral percussion that causes the loss of consciousness producing hypotension that lasts a few seconds or minutes," as the expert points out.
Syncopes are generally benign, except for those with a cardiac cause, which are more violent syncopes of sudden death, in which the patient does not have time to react and loses consciousness completely.
The rest are the vasovagal or neuromediated syncopes, which represent a problem when the patient suffers them very frequently or if he falls and is hurting himself. The symptoms that are usually experienced when suffering from syncope can be: feeling of emptiness in the stomach and heat in the head, dizziness or instability and cold sweating.
Some viruses cause infected cells to <u>lyse. </u> Lysis is the dissolving of the cell by factors like viral, enzymic, or osmosis. Lysis in medical term also means a presence of symptoms of complicated or acute diseases. Example of this disease is the tumor lysis syndrome.
