in acute liver failure, why should we give insulin together with glucose?

Answer 1

The liver is the largest organ in the body that stores and manufacture glucose to the body when in need. In acute liver failure, the liver literally is not working, hence the term "fail". Since the liver cannot store or manufacture glucose, a person with this condition must be given glucose.

Insulin is released by the pancreas, and lowers down excess sugar in the body. However, in liver failure, pancreas also fails to function because its blood vessels are closely related to the liver. A person with acute liver failure cannot control glucose in his/her blood, and therefore insulin must be administered to control it.

Hope that helped somewhat.