The most appropriate diet for a newly diagnosed with Myocardial Infarction is?

RAK Nursing Officer - 2019

Medical & Surgical Nursing

Hard

Appeared in: RAK Nursing Officer - 2019

Explanation

The primary goal of dietary therapy after a Myocardial Infarction (MI) is to reduce the workload on the heart.
A low-sodium diet helps achieve this by decreasing fluid retention and blood pressure, which lessens the strain on the heart muscle.
A low-cholesterol and low-saturated-fat diet is crucial to slow or prevent the progression of atherosclerosis, the underlying disease process that causes MIs.
This combination directly addresses both the acute need for cardiac rest and the long-term prevention of future cardiac events.

Option B: A clear liquid diet is nutritionally incomplete and is not the primary therapeutic diet for MI. It provides minimal calories and nutrients.
Option C: Keeping a patient 'Nothing by mouth' (NPO) is not a routine dietary order for all MI patients and can lead to nutritional deficits if prolonged.
Option D: A 'General as tolerated' diet is not specific enough for an MI patient. It fails to incorporate the necessary restrictions on sodium and cholesterol that are critical for cardiac recovery and secondary prevention.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Dietary management for Myocardial Infarction (MI) as background academic context rather than a clinical decision trigger.
A key nursing role is patient education on the importance of lifelong dietary changes after an MI to prevent recurrence. This includes teaching how to read food labels for sodium and fat content.
Nurses must monitor for and prevent constipation in post-MI patients. Straining during a bowel movement (Valsalva maneuver) can cause vagal stimulation, leading to bradycardia and increased cardiac stress.
Diet progression is a critical nursing assessment. The nurse assesses the patient's tolerance, starting from clear liquids (if ordered) and advancing to the therapeutic low-sodium, low-cholesterol diet as the patient stabilizes.

How to Approach the Question

First, identify the core of the question: it asks for the 'most appropriate' diet for a patient 'newly diagnosed with Myocardial Infarction'.
Think about the pathophysiology of an MI. The heart muscle is damaged, and the underlying cause is usually atherosclerosis. Therefore, the diet must address two things: 1) reducing the immediate workload on the damaged heart and 2) preventing the disease from getting worse.
Evaluate each option against these two goals.
Option A (Low-sodium/Low-cholesterol) directly addresses both goals: low sodium reduces workload, and low cholesterol addresses atherosclerosis.
Option B (Clear liquid) only addresses the immediate workload by being easy to digest but is not a long-term solution and doesn't address atherosclerosis.
Option C (NPO) is an extreme measure for unstable patients, not a standard diet.

Concept Tested & Keywords

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E6 Nutrition Kumud Khanna 2e p. 306-308

E6 Nursing Fundamentals Taylor p. 510-512

E6 Nursing Fundamentals Potter Perry 12e Part 5 p. 201-203