A psychiatric patient is discharged with phenelzine (MAOI) medicine. The nursing officer instructs him about dietary modification. Which of the following is the most appropriate intervention? .

1. A

   To avoid tyramine-rich foods

2. B

   Take the medicine with milk and water

3. C

   Take the medicine on empty stomach

4. D

   None of the above

Appeared in: NORCET 9 Mains - 2025

Explanation

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• Phenelzine is a nonselective, irreversible Monoamine Oxidase Inhibitor (MAOI), a first-generation antidepressant.
• MAOIs inhibit the monoamine oxidase enzyme, which is necessary to metabolize the amino acid tyramine, commonly found in certain foods.
• If a patient on an MAOI consumes tyramine-rich foods, tyramine levels can build up and cause a massive release of catecholamines (like norepinephrine).
• This leads to a hypertensive crisis, a life-threatening condition characterized by a sudden, severe increase in blood pressure.
• Therefore, the most critical nursing intervention is to educate the patient to strictly avoid all foods and beverages high in tyramine.

Why Other Options Were Wrong

• Option B: This is a general medication instruction but not the specific, critical safety advice needed for MAOIs. The type of food eaten is the primary concern, not the liquid used to swallow the pill.
• Option C: The timing of phenelzine administration relative to meals (with or without food) is not the most important safety instruction. The critical factor is the content of the food consumed throughout the day.
• Option D: This option is incorrect because a very specific and appropriate intervention is listed in Option A.

Related Visual

• Visual 1: Infographic - A clear chart listing 'Foods to EAT' and 'Foods to AVOID' for patients on MAOIs. The 'AVOID' list should feature pictures of aged cheese, cured meats, red wine, and soy sauce.
• Visual 2: Diagram - A simple flowchart showing: 'Patient takes MAOI' -> 'Eats tyramine-rich food' -> 'Tyramine breakdown blocked' -> 'Norepinephrine surge' -> 'Hypertensive Crisis (severe headache, high BP)'.
• Visual 3: Table - A detailed list of foods categorized by high, moderate, and low tyramine content, similar to the one in the explanation.

Clinical Relevance

• Nursing practice connection: Use the key finding related to Dietary restrictions for patients taking Monoamine Oxidase Inhibitors (MAOIs) to guide bedside assessment, documentation, and the next nursing action.
• Patient education is a primary nursing responsibility and is critical for safety with MAOIs. Failure to provide clear dietary instructions can have fatal consequences.
• A hypertensive crisis is a medical emergency. Nurses must be able to recognize the signs (severe headache, stiff neck, palpitations, high BP) and act immediately.
• What if? If a patient taking phenelzine calls the clinic complaining of a sudden, severe 'thunderclap' headache, the nurse should instruct them to go to the nearest emergency room immediately, as this is a hallmark sign of a hypertensive crisis.

How to Approach the Question

• First, identify the drug mentioned in the question. Phenelzine is a Monoamine Oxidase Inhibitor (MAOI).
• Recall the key pharmacological properties and major adverse effects associated with the MAOI drug class.
• The most famous and dangerous interaction associated with MAOIs is the 'cheese reaction'—a hypertensive crisis caused by ingesting tyramine.
• Scan the options to see which one addresses this critical safety issue.
• Option A directly mentions avoiding tyramine-rich foods, which is the cornerstone of MAOI dietary counseling.
• Evaluate the other options. Taking medicine with milk/water or on an empty stomach are general instructions and do not address the specific, life-threatening risk of phenelzine.

Concept Tested & Keywords

• Concept Tested: Dietary restrictions for patients taking Monoamine Oxidase Inhibitors (MAOIs).
• Stem keywords: phenelzine, MAOI, dietary modification, intervention
• Lead-in keywords: most appropriate
• Negative lead-in flag: false

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QcR_oiglgnEFtzmMSC6dxY

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