Food contraindicated with CRF and spironolactone:

Combined AIIMS - 2020 (Jodhpur, Bhopal, Patna, Raipur)

Medical & Surgical Nursing

Hard

Appeared in: Combined AIIMS - 2020 (Jodhpur, Bhopal, Patna, Raipur)

Explanation

Patients with Chronic Renal Failure (CRF) cannot effectively excrete potassium, causing it to build up in the body.
Spironolactone is a potassium-sparing diuretic, meaning it further increases potassium retention by blocking its excretion in the urine.
The combination of CRF and spironolactone creates a high risk for severe hyperkalemia (high blood potassium).
Bananas are a well-known high-potassium food and must be avoided in this clinical scenario to prevent life-threatening cardiac complications.

Option A: Carrots contain potassium, but generally less than bananas per serving. While intake should be monitored and limited in a renal diet, they are not as strictly contraindicated as high-potassium fruits like bananas.
Option B: Papaya contains a moderate amount of potassium, less than bananas. It is not the most high-risk food among the choices.
Option D: Maize (corn) has a moderate potassium content. While not a low-potassium food, it is not considered as high in potassium as bananas.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Dietary restrictions for patients with chronic renal failure on potassium-sparing diuretics as background academic context rather than a clinical decision trigger.
A key nursing responsibility is patient education on dietary restrictions. For patients on potassium-sparing diuretics, especially with renal impairment, this is a critical safety issue.
Nurses must monitor serum potassium levels regularly for patients with CRF and those on spironolactone.
It is vital to teach patients the signs and symptoms of hyperkalemia, such as muscle weakness, fatigue, tingling sensations, and palpitations, and to report them immediately.

How to Approach the Question

First, identify the key elements in the question: 'Chronic Renal Failure (CRF)' and the drug 'spironolactone'.
Recall the pathophysiology of CRF: the kidneys fail to excrete waste products and electrolytes, including potassium.
Recall the mechanism of action of spironolactone: it is a 'potassium-sparing' diuretic, meaning it causes the body to hold on to potassium.
Synthesize these two facts: Both the disease (CRF) and the drug (spironolactone) lead to increased potassium levels.
Conclude that the patient is at high risk for hyperkalemia and must avoid foods high in potassium.
From the options, identify the food most famously known for its high potassium content, which is the banana.

Concept Tested & Keywords

Concept Tested: Dietary restrictions for patients with chronic renal failure on potassium-sparing diuretics.
Stem keywords: CRF, Chronic Renal Failure, spironolactone, food contraindicated
Lead-in keywords: contraindicated
Negative lead-in flag: false