Fruity musty or mousy breath odour in chronic liver disease is known as which of the following?

DSSSB 13 August 2024

Medical & Surgical Nursing

Easy

Appeared in: DSSSB 13 August 2024

Explanation

Fetor hepaticus is the medical term for a distinctive sweet, pungent, musty, or mousy breath odor.
It is a characteristic sign of severe acute or chronic liver disease, particularly when associated with hepatic encephalopathy.
The odor is caused by the failure of the damaged liver to detoxify sulfur-containing substances (like mercaptans) absorbed from the intestine.
These volatile compounds then circulate in the blood and are expelled through the lungs during breathing.

Option A: This is a fabricated term. It incorrectly combines 'hepato' (liver) with 'asterian' (likely referring to asterixis). Asterixis is a motor symptom (flapping tremor), not a breath odor.
Option B: This is a fabricated term. It incorrectly combines 'fetor' (odor) with 'medusae' (referring to caput medusae). Caput medusae is a visual sign of portal hypertension (distended periumbilical veins), not a breath odor.
Option D: Acidotic breathing (e.g., Kussmaul breathing) is associated with metabolic acidosis, most notably diabetic ketoacidosis (DKA). While the breath may have a 'fruity' smell due to ketones (acetone), it is not described as 'musty' or 'mousy' and is linked to a different underlying pathology.

Clinical Relevance

Nursing practice connection: Knowing Clinical signs of chronic liver disease helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
The presence of fetor hepaticus is a significant clinical finding that often indicates worsening liver failure and the onset or presence of hepatic encephalopathy.
A nurse detecting this odor should perform an immediate and thorough neurological assessment (checking for confusion, lethargy, asterixis) and notify the physician.
It serves as a critical non-invasive clue to the severity of the patient's condition, prompting monitoring of ammonia levels and liver function tests.

How to Approach the Question

First, identify the key descriptors in the question: 'fruity, musty, or mousy breath odour' and the context 'chronic liver disease'.
Recognize that this specific combination of smells is a classic, named sign in medicine.
Evaluate the options based on medical terminology. 'Fetor' means a strong, unpleasant smell, and 'hepaticus' relates to the liver. This makes 'Fetor hepaticus' the most logical choice.
Systematically eliminate the other options. 'Hepato-asterian' and 'Fetor medusae' are nonsensical combinations of terms for other, unrelated signs of liver disease (asterixis and caput medusae).
Differentiate from 'Acidotic breathing'. While it can have a fruity odor, it's due to acetone in diabetic ketoacidosis and lacks the 'musty/mousy' quality specific to liver failure.

Concept Tested & Keywords

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