Which of the following is an absolute contraindication to parenteral nutrition?

NIA - 29 January 2023

Applied Nutrition & Dietetics

Hard

Appeared in: NIA - 29 January 2023

Explanation

In patients with advanced or terminal malignancy for whom no effective anticancer therapy is available, parenteral nutrition is generally not prescribed.
The rationale is that the potential complications and side effects of PN (like infection, fluid overload, and metabolic disturbances) are not balanced by an improvement in the disease course or quality of life.
This is a clinical and ethical decision based on the principle that the burdens of the intervention should not outweigh the benefits, especially in palliative care settings.

Option A: Diarrhea, especially if severe and causing malabsorption, is often an indication for PN, not a contraindication. PN provides nutrition while allowing the bowel to rest.
Option C: Liver cirrhosis is not an absolute contraindication. While PN requires careful formulation and monitoring in these patients to manage fluid, protein, and electrolytes, it can be a necessary intervention for malnutrition.
Option D: Osteoporosis is a chronic bone disease and has no bearing on the decision to initiate or withhold parenteral nutrition. The two conditions are unrelated in this context.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Contraindications for Parenteral Nutrition (PN) as background academic context rather than a clinical decision trigger.
A nurse's primary role in nutritional support is assessment and advocacy. This includes assessing the patient's nutritional status, GI function, and understanding the goals of care to advocate for the most appropriate method (enteral vs. parenteral).
Nurses must meticulously monitor patients on PN for complications, including infection at the catheter site (CLABSI), hyperglycemia, refeeding syndrome, and fluid/electrolyte imbalances.
What if? If the patient with malignancy was undergoing aggressive chemotherapy and developed severe mucositis preventing oral or enteral intake, PN would then become an appropriate and indicated therapy to support them through treatment, highlighting the context-dependent nature of this 'contraindication'.

How to Approach the Question

First, understand the core question: it asks for an 'absolute contraindication' to PN.
Analyze the term 'parenteral nutrition', which means feeding through a vein, bypassing the gut.
Evaluate each option. Think about whether PN would be helpful or harmful in that condition.
For 'Diarrhea', recognize that if the gut isn't absorbing, bypassing it with PN is logical. So, it's not a contraindication.
For 'Liver Cirrhosis', recall that these patients are often malnourished. PN might be tricky but necessary. It's not an absolute 'no'.
For 'Osteoporosis', identify that this is a bone issue and unrelated to IV feeding.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 2 p. 530-532

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 104-106