Increase risk of coronary heart disease and atherosclerosis is due to increase in \ \ \ \ \ \ \ .& x20; - RRB Nsg. Superintendent -29 April-2025 (shift-2nd)

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

Medical Surgical Nursing

Easy

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

Explanation

Low-Density Lipoprotein (LDL) is the primary carrier of cholesterol in the blood and is directly responsible for its deposition in arterial walls.
Elevated LDL levels lead to the formation of atherosclerotic plaques, which narrow arteries and increase the risk of coronary heart disease (CHD).
Due to its strong association with atherosclerosis, LDL cholesterol is commonly referred to as "bad cholesterol.".
Studies show that a decrease of 1 mg/dL in LDL cholesterol can result in a 1-2% decrease in the relative risk of CHD.

Option A: High-Density Lipoprotein (HDL) cholesterol is known as "good cholesterol." It transports cholesterol from the body's tissues back to the liver, helping to prevent plaque buildup. Therefore, high levels of HDL are protective against heart disease, not a risk factor.
Option C: While high levels of triglycerides are a known risk factor for heart disease, their role is considered secondary to LDL cholesterol in the direct formation of atherosclerotic plaques. High triglycerides are often part of a cluster of conditions (metabolic syndrome) that collectively increase risk.
Option D: Very-Low-Density Lipoprotein (VLDL) primarily transports triglycerides. While it is atherogenic and contributes to plaque formation, it is less cholesterol-rich than LDL. VLDL is a precursor to LDL, but LDL is considered the main driver of atherosclerosis.

Visual 1: Diagram: 'Atherosclerosis Plaque Formation'. This visual would show a cross-section of an artery at different stages, from a healthy artery to one with significant plaque buildup, illustrating how LDL deposition narrows the lumen.
Visual 2: Flowchart: 'Lipoprotein Metabolism'. This chart would illustrate the pathways of HDL, LDL, and VLDL, showing LDL delivering cholesterol to tissues and HDL returning it to the liver (reverse cholesterol transport).

Clinical Relevance

Nursing practice connection: Knowing Relationship between lipoproteins and cardiovascular disease risk helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses play a crucial role in educating patients about managing cholesterol levels through lifestyle modifications (diet, exercise) and medication adherence (e.g., statins).
Understanding the lipid profile is essential for nurses to interpret lab results and explain them to patients, reinforcing the importance of lowering LDL and raising HDL.
Monitoring for side effects of lipid-lowering medications and assessing patient understanding of their treatment plan are key nursing responsibilities.

How to Approach the Question

First, identify the key terms in the question: "increase risk," "coronary heart disease," and "atherosclerosis."
Recall the different types of cholesterol and their roles in the body. This is a fundamental concept in cardiovascular health.
Differentiate between "good" cholesterol (HDL), which is protective, and "bad" cholesterol (LDL), which contributes to plaque.
Based on this differentiation, eliminate HDL as a possible answer since the question asks for a factor that increases risk.
Compare the remaining options (LDL, Triglycerides, VLDL). Recognize that LDL is the primary and most direct contributor to the plaque formation characteristic of atherosclerosis.
Select LDL cholesterol as the most accurate answer.

Concept Tested & Keywords

Concept Tested: Relationship between lipoproteins and cardiovascular disease risk.
Stem keywords: coronary heart disease, atherosclerosis, increase risk
Lead-in keywords: due to
Negative lead-in flag: false

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