In the deposition of fat in blood vessels (atherosclerosis), what do blood vessels become?

Appeared in: P.CHO-2019

Explanation

Atherosclerosis is characterized by the formation of plaques (atheromas) containing fat, cholesterol, and calcium within the inner layer of the artery walls.
This plaque buildup causes the arterial walls to physically thicken.
The process leads to a loss of elastic fibers, resulting in hardening or stiffening of the arteries (arteriosclerosis).
Consequently, the arteries become less able to expand and recoil with each heartbeat, leading to increased blood pressure and reduced blood flow.

Option B: While advanced, unstable plaques can become fragile and rupture, the primary and defining change to the overall vessel wall is thickening and stiffening, not generalized fragility.
Option C: This is the opposite of what occurs in atherosclerosis. Healthy arteries are elastic, but the disease process causes them to lose this essential property.
Option D: This is incorrect because 'Thick and stiff' is the most accurate description of the pathological changes in the blood vessels due to atherosclerosis.

Clinical Relevance

Nursing practice connection: Knowing Pathophysiology of atherosclerosis helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses are central to patient education on managing atherosclerosis risk factors, including diet modification, regular exercise, smoking cessation, and medication adherence.
Regular monitoring of blood pressure and cholesterol levels is a key nursing responsibility for patients at risk for or with diagnosed atherosclerosis.
What if? If a patient with known atherosclerosis develops pain in their calf when walking that is relieved by rest (intermittent claudication), the nurse should recognize this as a key symptom of peripheral artery disease (PAD), a common consequence of atherosclerosis, and ensure it is reported for further evaluation and management.

How to Approach the Question

First, identify the core concept in the question, which is 'atherosclerosis'.
Recall the definition of atherosclerosis: a disease where plaque builds up inside the arteries.
Consider the components of plaque (fat, cholesterol, calcium) and their effect on a flexible tube. This buildup would make the tube's walls thicker and harder (stiffer).
The term 'sclerosis' itself means hardening. This is a direct clue to the correct answer.
Evaluate the options: 'Thick and stiff' directly matches the pathological process. 'Elastic' is the opposite. 'Fragile' describes a potential complication (plaque rupture) rather than the primary change in the vessel wall.

Concept Tested & Keywords

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E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed pp. 506-508, 508-510

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