Hepatic encephalopathy is primarily caused by accumulation of which substance?

Hepatic encephalopathy is primarily caused by accumulation of which substance?

• A. Bilirubin
• B. Ammonia
• C. Urea
• D. Glucose

Answer: (B)

Hepatic encephalopathy stems from toxins that the diseased liver can’t properly clear, and the main offender is ammonia. Intestinal bacteria continually produce ammonia from dietary nitrogen, and the liver normally detoxifies it by converting ammonia into urea for elimination. When the liver fails, ammonia accumulates in the blood and crosses into the brain, where it disrupts brain cell function and neurotransmission, leading to personality changes, confusion, and in severe cases, coma. Bilirubin reflects liver injury but isn’t the neurotoxin driving this condition. Urea is the detoxified form of ammonia; with liver failure its production drops, so it isn’t the cause. Glucose issues can affect brain function, but they aren’t the primary toxin behind hepatic encephalopathy.

Hepatic encephalopathy stems from toxins that the diseased liver can’t properly clear, and the main offender is ammonia. Intestinal bacteria continually produce ammonia from dietary nitrogen, and the liver normally detoxifies it by converting ammonia into urea for elimination. When the liver fails, ammonia accumulates in the blood and crosses into the brain, where it disrupts brain cell function and neurotransmission, leading to personality changes, confusion, and in severe cases, coma. Bilirubin reflects liver injury but isn’t the neurotoxin driving this condition. Urea is the detoxified form of ammonia; with liver failure its production drops, so it isn’t the cause. Glucose issues can affect brain function, but they aren’t the primary toxin behind hepatic encephalopathy.