Which of the following is a morphological pathological process occurs in irreversible cell injury?

RRB Nsg. Superintendent -29 April-2025 (shift-2nd)

Pathology & Genetics

Easy

Appeared in: RRB Nsg. Superintendent -29 April-2025 (shift-2nd)

Explanation

Autolysis is the process of 'self-digestion' where a cell is destroyed by its own lysosomal enzymes.
This process is a definitive feature of necrosis, which is the morphological expression of irreversible cell injury.
The rupture of lysosomal membranes and release of these enzymes marks the 'point of no return' for the cell, leading to its complete breakdown.

Option A: Mucoid change refers to the accumulation of mucin. While pathological, it is a type of metabolic derangement or accumulation, not a process defining irreversible cell death.
Option C: Hydropic change, or cellular swelling, is the hallmark of reversible cell injury. It is caused by a failure of ion pumps and water influx, but the cell can recover if the stress is removed.
Option D: Hyaline change is a descriptive histological term for a glassy, pink protein accumulation. It is non-specific and can be found in various conditions, including reversible ones, and is not the process of cell death itself.

Visual 1: Diagram - A flowchart comparing the pathways of reversible and irreversible cell injury. It should show an initial injury leading to reversible changes (like hydropic swelling) and how persistent or severe injury crosses a threshold to irreversible changes (membrane damage, lysosomal rupture, autolysis).
Visual 2: Micrograph Comparison - Side-by-side images showing a normal cell, a cell with hydropic (reversible) change (swollen, with clear vacuoles), and a necrotic (irreversible) cell (disrupted membrane, eosinophilic cytoplasm, and nuclear changes).

Clinical Relevance

Nursing practice connection: Knowing Morphological changes in irreversible cell injury helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Understanding the difference between reversible and irreversible injury is fundamental in medicine. For example, in a heart attack (myocardial infarction), cells in the core of the ischemic area undergo irreversible injury (necrosis/autolysis), while cells in the surrounding area (penumbra) may only be reversibly injured.
Nursing interventions and medical treatments (like reperfusion therapy) aim to save the reversibly injured cells and limit the extent of permanent tissue damage (necrosis).
What if? If a patient with chest pain receives timely treatment that restores blood flow to the heart muscle, the reversibly injured cells can recover. If treatment is delayed, those cells will progress to irreversible injury, leading to a larger area of dead heart muscle and worse long-term outcomes.

How to Approach the Question

First, identify the key terms in the question: 'morphological process' and 'irreversible cell injury'. This tells you the question is about the structural changes that happen when a cell is damaged beyond recovery.
Next, evaluate each option in the context of cell injury.
Recall or deduce the classification of each change. Is it a sign of reversible or irreversible damage?
Hydropic change is the classic example of reversible injury. This eliminates it as the answer.
Mucoid and Hyaline changes are types of accumulations or appearances, not the core process of cell death.
Autolysis, the process of self-digestion by the cell's own enzymes, is a fundamental event in necrosis (irreversible cell death). This makes it the most logical answer.

Concept Tested & Keywords

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