A patient on dialysis should avoid?

WCL Staff Nurse - 2019

Medical Surgical Nursing

Hard

Appeared in: WCL Staff Nurse - 2019

Explanation

Canned soups are processed foods that are extremely high in sodium, often containing a significant portion of or even exceeding the daily recommended limit (typically 2 grams) for a dialysis patient in a single serving.
Excess sodium intake causes intense thirst and fluid retention, leading to weight gain between dialysis treatments, elevated blood pressure, and potentially life-threatening conditions like pulmonary edema.
Many canned and processed foods, including soups, use phosphate-based additives as preservatives. These are highly absorbable and contribute to hyperphosphatemia, a common complication in dialysis that leads to renal bone disease and cardiovascular calcification.

Option A: While sweet potatoes are high in potassium, which is restricted in a dialysis diet, the immediate and severe risks associated with the high sodium content in canned soups are generally a higher priority for avoidance.
Option B: This option is too general. A renal diet does not eliminate all fresh vegetables. Patients are educated to choose low-potassium vegetables (like cucumbers, onions, lettuce) and limit high-potassium ones.
Option D: Steamed broccoli contains a moderate amount of potassium. While it should be consumed in controlled portions, it is not a food that must be strictly avoided like high-sodium canned soups.

Clinical Relevance

Nursing practice connection: Use the key finding related to Dietary management for patients on dialysis to guide bedside assessment, documentation, and the next nursing action.
Nurses have a vital role in patient education regarding the renal diet. Non-adherence can lead to severe complications such as fluid overload, hypertensive crisis, and life-threatening hyperkalemia causing cardiac arrhythmias and arrest.
Accurate dietary assessment and reinforcement of dietary principles during each patient encounter are critical nursing responsibilities to improve patient outcomes and reduce hospitalizations.
What if? If the patient was in early-stage Chronic Kidney Disease (CKD Stage 3) and not on dialysis, the dietary restrictions would be less stringent. The focus might be on moderate sodium and phosphorus reduction, but a strict potassium restriction might not yet be necessary unless blood levels are elevated.

How to Approach the Question

First, identify the key patient condition: 'on dialysis'. This immediately signals the need to consider a renal diet.
Recall the primary dietary restrictions for dialysis: limited sodium, potassium, phosphorus, and fluids.
Evaluate each food option against these restrictions.
Recognize that 'canned soups' are processed foods, which are almost universally high in sodium and often contain phosphate additives.
Identify 'sweet potato' and 'broccoli' as vegetables primarily known for their potassium content.
Compare the options. The extremely high and unmodifiable sodium/phosphate content in canned soup poses a more universal and immediate risk than the potassium in vegetables, which can be managed with portioning and preparation. Therefore, canned soup is the food that should be most strictly avoided.

Concept Tested & Keywords

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E6 Medicine Davidson Principles Practice 24e p. 438-440

E6 Nutrition Kumud Khanna 2e p. 376-378