The client is to take lithium regularly after she is discharged from the hospital. The nursing care plan includes discharge planning. The most important information to impart to the client and his family is that the client should have:

1. A

   An adequate intake of sodium

2. B

   Limit his fluid intake

3. C

   Have a limited intake of sodium

4. D

   Not eat foods that have a high tyramine content (e.g., cheese, wine, liver, yeast) or drink alcohol.

Appeared in: AIIMS Delhi NO - 2018

Explanation

• Lithium has a narrow therapeutic range of 0.6-1.2 mEq/L, making prevention of toxicity a primary goal of patient education.
• The kidneys process lithium and sodium in a similar way. When sodium intake is low, the kidneys reabsorb more lithium along with sodium to compensate.
• This inverse relationship means that low sodium levels can cause lithium levels to rise to a toxic range.
• Therefore, maintaining a consistent and adequate intake of dietary sodium is the most critical instruction to ensure the drug remains at a safe and therapeutic level.

Why Other Options Were Wrong

• Option B: Limiting fluid intake leads to dehydration. This concentrates lithium in the bloodstream, significantly increasing the risk of toxicity.
• Option C: A limited or low-sodium diet is dangerous for a patient on lithium. It directly causes the kidneys to retain more lithium, which can precipitate toxicity.
• Option D: The dietary restriction of avoiding tyramine-rich foods is specific to patients taking Monoamine Oxidase Inhibitors (MAOIs), not lithium. This combination can cause a hypertensive crisis with MAOIs.

Related Visual

Clinical Relevance

• Nursing practice connection: Safe nursing care depends on performing Patient education for lithium therapy in the correct sequence, documenting the action clearly, and monitoring for the expected response.
• A nurse's primary responsibility when caring for a patient on lithium is comprehensive education to prevent life-threatening toxicity. This includes teaching about diet, hydration, and signs of toxicity.
• Patients must be taught to notify their prescriber before starting any new diet (especially low-sodium) or new medications (especially diuretics or NSAIDs), as these can drastically alter lithium levels.
• What if? If the patient develops gastroenteritis with vomiting and diarrhea, they are at high risk for dehydration and sodium loss. The nurse should instruct the patient to stop taking lithium and contact their doctor immediately for guidance, as this condition can rapidly lead to lithium toxicity.

How to Approach the Question

• First, identify the key subject of the question, which is the medication lithium.
• Recall the most critical safety information related to lithium. Its narrow therapeutic index and its unique relationship with sodium and fluid balance are top priorities.
• Evaluate each option based on this critical safety information. The question asks for the 'most important' piece of information.
• Analyze Option A: 'Adequate intake of sodium.' This directly relates to preventing toxicity by maintaining stable lithium levels. This is a crucial safety point.
• Analyze Option B: 'Limit his fluid intake.' This is the opposite of correct advice and would increase toxicity risk.
• Analyze Option C: 'Have a limited intake of sodium.' This is also the opposite of correct advice and would increase toxicity risk.

Concept Tested & Keywords

• Concept Tested: Patient education for lithium therapy
• Stem keywords: lithium, discharge planning, nursing care plan, most important information
• Lead-in keywords: most important
• Negative lead-in flag: false

Question ID

Q67XaA4NEHE41flRlVUg6o

Copy ID

Reference Book

E6 Pharmacology Nursing Lilley 11e Part 1 p. 272-274

E6 Guide to Mental Health & PSYCHIATRIC NURSING R Sreevani— Part 1 (pp 26-289 of 579) p. 134-136

E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) p. 2067-2069