🩺 Nursing Question of the Day

Challenge yourself with one exam-style nursing question every day.

✅ Think carefully • ✅ Choose your answer • ✅ Then scroll down to check the explanation.

🧠 Asterixis in Acute Liver Failure

✅ Answer: (D) Hepatic Encephalopathy

📖 What is Asterixis?

Asterixis = A sudden, brief loss of muscle tone causing a “flapping tremor” of the hands when the arms are extended and the wrists are dorsiflexed.

👉 It is commonly called the “liver flap” because it is a classic sign of hepatic encephalopathy.

📖 What is Hepatic Encephalopathy?

Hepatic = Related to the liver
Encephalopathy = Brain dysfunction

👉 Hepatic encephalopathy is a decline in brain function caused by severe liver dysfunction. The damaged liver cannot effectively remove toxins such as ammonia, allowing them to accumulate and affect the brain.

🩺 Why is Option (D) Correct?

In acute liver failure:

• ✔ The liver cannot detoxify ammonia efficiently.
• ✔ Blood ammonia levels increase.
• ✔ Ammonia reaches the brain, causing neurological impairment.
• ✔ Asterixis (flapping tremor), confusion, drowsiness, and altered consciousness develop.

👉 Therefore, asterixis strongly suggests hepatic encephalopathy.

❌ Why Other Options Are Wrong?

(A) Hypoglycemia
❌ Causes sweating, tremors, confusion, and unconsciousness but does not produce the characteristic flapping tremor (asterixis).

(B) Meningitis
❌ Presents with fever, neck stiffness, severe headache, and photophobia—not asterixis.

(C) Stroke
❌ Usually causes focal neurological deficits such as hemiplegia or speech disturbances rather than bilateral flapping tremor.

📝 Features of Hepatic Encephalopathy

📌 Exam Tip: Asterixis (flapping tremor) is a classic sign of hepatic encephalopathy. In liver failure, always think of elevated ammonia levels causing neurological symptoms. The first-line treatment is usually lactulose, with rifaximin often added to reduce ammonia-producing gut bacteria.