How to Recognize the Signs and Symptoms of a Stroke
Our brain is the most metabolically active organ in the body, consuming around 15-20% of the total blood pumped by the heart. It is also very susceptible to damage if the cerebral blood flow is dysfunctional.
A stroke occurs when the blood supply to a section of the brain is lost or reduced. This can either be due to an infarction (the obstruction of a blood vessel causing local death of the tissue) or a hemorrhage. Whatever the cause may be, it results in the lack of oxygen to the affected brain area causing death. When areas of the brain are deprived of oxygen, they die, and the functions performed by those particular regions will be weakened.
An infarction occurs when there is insufficient blood flow to a particular area for a long time. It can be caused by to many factors, such as clots that can block blood vessels or diseases affecting the patency of the vessels. A hemorrhagic stroke occurs when there's a rupture of the blood vessels supplying the brain. It can also occur due to several structural malformations.