MP NHM CHO-2024 (Shif…: The organ which is particularly affected by severe malnutrition, leading to fatty degeneration and functional…

MP NHM CHO-2024 (Shift-1)

Pathology & Genetics

Easy

Appeared in: MP NHM CHO-2024 (Shift-1)

Explanation

The liver is the correct answer as it is the primary site for fatty degeneration in severe protein malnutrition.
This condition, known as hepatic steatosis, arises from the liver's inability to synthesize apolipoproteins (carrier proteins) due to a lack of dietary protein.
Without apolipoproteins, triglycerides (fats) cannot be exported from the liver cells (hepatocytes) and accumulate, causing the liver to become enlarged and impairing its function.
This is a hallmark feature of kwashiorkor, a type of severe acute malnutrition dominated by protein deficiency.

Option A: In severe malnutrition, the spleen, as part of the lymphoreticular system, typically undergoes atrophy (shrinking) and depletion of lymphocytes, not fatty degeneration.
Option C: While severe malnutrition and dehydration can impair kidney function, leading to electrolyte imbalances and reduced filtration, fatty degeneration is not the characteristic pathological change in the kidneys.
Option D: The pancreas is affected by malnutrition, showing atrophy of its cells, which leads to reduced secretion of digestive enzymes (exocrine function) and hormones like insulin (endocrine function). However, it does not primarily undergo fatty degeneration.

Visual 1: Diagram: A comparison of a healthy liver versus an enlarged, pale, greasy-looking fatty liver (hepatic steatosis) as seen in kwashiorkor.
Visual 2: Micrograph: A liver biopsy slide showing hepatocytes swollen with large, clear fat vacuoles that push the cell nucleus to the periphery.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Pathophysiological effects of severe malnutrition on organ systems in acute care settings.
Nurses play a vital role in assessing nutritional status using tools like mid-upper arm circumference (MUAC) and checking for edema to identify severe acute malnutrition.
In a patient with kwashiorkor, a nurse should monitor for signs of liver dysfunction, such as jaundice, ascites, and abnormal liver function tests (LFTs), and manage nutritional rehabilitation carefully to avoid refeeding syndrome.
What if? If the patient had marasmus (severe calorie and protein deficiency) instead of primarily protein deficiency, a fatty liver would be less common. In marasmus, the body catabolizes all its energy stores, including fat, so fat does not typically accumulate in the liver.

How to Approach the Question

First, identify the key concepts in the question: 'severe malnutrition' and the specific pathological change 'fatty degeneration'.
Recall the major forms of severe malnutrition, particularly kwashiorkor (protein deficiency) and marasmus (calorie deficiency).
Connect the term 'fatty degeneration' (or steatosis) to the organ most associated with this change in the context of malnutrition. This is a classic sign of kwashiorkor.
Evaluate the options based on their metabolic roles. The liver is central to fat and protein metabolism. A deficiency in protein directly impacts its ability to process and transport fats.
Eliminate the other options by recalling their primary response to malnutrition: the spleen undergoes atrophy, the kidneys suffer functional decline, and the pancreas also atrophies, leading to reduced secretions.

Concept Tested & Keywords

Concept Tested: Pathophysiological effects of severe malnutrition on organ systems
Stem keywords: severe malnutrition, fatty degeneration, functional impairment, organ
Lead-in keywords: particularly affected

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E6 Pathology-Textbook of PATHOLOGY 9th Edition Harsh Mohan Part 3 (515-969) p. 515-990