4 to 6 minutes before brain cells begin to die due to lack of ATP
Step-by-step explanation:
When the artery that supplies blood to the brain is blocked by blood clot or by the accumulation of fat which is also called as the plague the stroke that occurs in the brain is called a the ischemic stroke. This stroke first starts in the heart and then they travel fully through the circulatory system affecting the functions
The cells become leaky and they begin to lose the ATP due to stroke and the mechanism is diminished and the blood flow reduces to the brain cells causing the brain to cell death