what happens with a sugar coma
Blood sugar : In people with diabetes, coma can occur when blood sugar levels stay very high. That's a condition known as hyperglycemia. Hypoglycemia, or blood sugar that's too low, can also lead to a coma. This type of coma is usually reversible once the blood sugar is corrected. Oxygen deprivation: Oxygen is essential for brain function. Cardiac arrest causes a sudden cutoff of blood flow and oxygen to the brain, called hypoxia or anoxia.
A person can fall in to diabetic coma while suffering from Diabetic ketoacidosis (DKA). The person will not remain conscious in this sleep-like state. This state which can be caused by hyperglycemia (high blood glucose) or hypoglycemia (low blood glucose), can remain for long time or sometimes lead to death.