NORCET -4 , 2023
Medical & Surgical Nursing
Hard
A nurse giving dietary instructions to a patient who is at risk of coronary artery disease. Which oil should avoid?
Appeared in: NORCET -4 , 2023
Explanation
- Coconut oil is the correct answer because it is exceptionally high in saturated fatty acids (SFAs), with a composition of about 86-92% SFAs.
- High intake of saturated fats is a well-established risk factor for coronary artery disease (CAD) as it leads to an increase in low-density lipoprotein (LDL) cholesterol.
- Elevated LDL cholesterol contributes to the formation of atherosclerotic plaques in the arteries, narrowing them and increasing the risk of heart attack and stroke.
- Dietary guidelines for preventing CAD consistently recommend limiting saturated fat intake and replacing it with unsaturated fats.
Why Other Options Were Wrong
- Option B: Sunflower oil is a healthy choice because it is rich in polyunsaturated fatty acids (PUFAs), specifically linoleic acid (an omega-6 fatty acid).
- Option C: Olive oil is a very healthy choice, being a primary source of monounsaturated fatty acids (MUFAs).
- Option D: This option is incorrect because two of the oils listed, sunflower and olive oil, are beneficial for heart health and are recommended for patients at risk of CAD.
Related Visual
- Visual 1: Chart - A comparative chart showing the percentage of saturated, monounsaturated, and polyunsaturated fats in different cooking oils (coconut, sunflower, olive, butter). This helps visualize why coconut oil is an outlier.
- Visual 2: Diagram - An illustration of atherosclerosis, showing how LDL cholesterol contributes to plaque buildup inside an artery over time, leading to narrowing of the vessel.
Clinical Relevance
- Nursing practice connection: Use the key finding related to Dietary management for patients at risk of coronary artery disease (CAD), focusing on the types of dietary fats to guide bedside assessment, documentation, and the next nursing action.
- A key nursing role is patient education on lifestyle modifications, including diet, to manage and prevent chronic diseases like CAD.
- Nurses must be able to provide clear, evidence-based dietary advice, such as choosing unsaturated fats over saturated and trans fats.
- Patient teaching should include practical tips like reading food labels to identify saturated fat content and choosing healthier cooking methods (e.g., baking, grilling) over frying.
How to Approach the Question
- First, identify the core of the question: it asks which oil to AVOID for a patient at risk of coronary artery disease (CAD).
- Recall the pathophysiology of CAD: it's linked to high cholesterol, specifically high LDL ('bad' cholesterol), which is influenced by dietary fat.
- Categorize the different types of dietary fats: Saturated, Monounsaturated (MUFA), and Polyunsaturated (PUFA).
- Remember the effect of each fat type on cholesterol: Saturated fats raise LDL, while unsaturated fats (MUFA and PUFA) tend to lower LDL.
- Evaluate each option based on its primary fat type: Coconut oil is known to be very high in saturated fat. Sunflower oil is high in PUFA. Olive oil is high in MUFA.
- Conclude that the oil to avoid is the one high in saturated fat, which is coconut oil.
Concept Tested & Keywords
- Concept Tested: Dietary management for patients at risk of coronary artery disease (CAD), focusing on the types of dietary fats.
- Stem keywords: dietary instructions, coronary artery disease, risk, oil, avoid
- Lead-in keywords: avoid
- Clinical cues: Patient at risk of coronary artery disease
Question ID
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Practise the full NORCET -4 , 2023
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