Which sign indicates hepatic encephalopathy due to ammonia buildup?

Which sign indicates hepatic encephalopathy due to ammonia buildup?

• A. Confusion
• B. Jaundice
• C. Ascites
• D. Pruritus

Answer: (A)

The main concept is that hepatic encephalopathy results from ammonia toxicity affecting brain function. When the liver can’t adequately convert ammonia to urea, ammonia accumulates and crosses into the brain, where it disrupts neurotransmission and can cause cerebral edema. This neuropsychiatric impact typically presents as confusion and other changes in mental status, making confusion the telltale sign of ammonia-driven hepatic encephalopathy. Jaundice, ascites, and pruritus are all signs of liver dysfunction or cholestasis, but they reflect liver failure or bile handling rather than brain dysfunction from ammonia. Jaundice comes from bilirubin buildup, ascites from portal hypertension and fluid shifts, and pruritus from bile salts in the skin.

The main concept is that hepatic encephalopathy results from ammonia toxicity affecting brain function. When the liver can’t adequately convert ammonia to urea, ammonia accumulates and crosses into the brain, where it disrupts neurotransmission and can cause cerebral edema. This neuropsychiatric impact typically presents as confusion and other changes in mental status, making confusion the telltale sign of ammonia-driven hepatic encephalopathy.

Jaundice, ascites, and pruritus are all signs of liver dysfunction or cholestasis, but they reflect liver failure or bile handling rather than brain dysfunction from ammonia. Jaundice comes from bilirubin buildup, ascites from portal hypertension and fluid shifts, and pruritus from bile salts in the skin.