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When is ER care needed for overt hepatic encephalopathy?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

My brother, 50, developed overt hepatic encephalopathy after a urinary infection and was hospitalized last month. His blood tests showed ammonia 118, white count 14, creatinine 1.9, and INR 2.1.

After treatment with antibiotics, lactulose, and Xifaxan, he improved enough to come home, but he still seems dull, slow to respond, and forgetful, and his sleep pattern is irregular again.

My concerns are:

  1. How long should lactulose and Xifaxan be continued together after discharge?

  2. Can infections trigger a relapse even without clear fever, pain, or burning urine?

  3. What specific symptoms or blood test changes should prompt an immediate visit to the ER?

Kindly help.

Hello,

Welcome to icliniq.com

I have read your query and understand your concerns.

Your brother had infection-triggered overt hepatic encephalopathy (HE). The urine infection, high ammonia (118), kidney dysfunction (creatinine 1.9), and INR (international normalized ratio) 2.1 all contributed to toxin buildup in the brain, and even after discharge, mild slowness, dullness, and sleep reversal can persist for weeks as the brain gradually recovers.

After one episode of overt HE, lactulose and Rifaximin (Xifaxan) are usually continued long-term, often indefinitely, to prevent recurrence. Lactulose should be adjusted to maintain two to three soft stools daily, and rifaximin significantly lowers the risk of relapse and hospitalization.

Infections can trigger HE relapse even without obvious symptoms like high fever or burning urine. Other triggers include dehydration, constipation, gastrointestinal bleeding, worsening kidney function, or low sodium, as even mild inflammation can precipitate HE.

Go to the ER (emergency room) immediately if there is increasing confusion, difficulty waking, not recognizing family, no bowel movement for 24 to 48 hours, fever, vomiting, bleeding or black stools, rapid abdominal swelling, reduced urine output, or sudden worsening of kidney tests or sodium levels.

Close monitoring, prompt treatment of triggers, and strict adherence to medications are essential to prevent recurrence.

I hope this addresses your concerns.

Thanks and regards.

Medically reviewed byiCliniq medical review team

Published At March 3, 2026
Reviewed AtMarch 5, 2026

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