Enteral vs Parenteral Nutrition Indication Criteria

Determine appropriate nutrition route using indication criteria. Enteral nutrition (EN) is preferred whenever the GI tract is functional: start within 24-48 hours of ICU admission. Parenteral nutrition (PN) indicated when: GI tract non-functional (ileus, SBO, mesenteric ischemia), EN contraindicated (GI fistula without distal access), or EN fails to meet 60% or more of caloric targets after 3-5 days.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Determine appropriate nutrition route using indication criteria. Enteral nutrition (EN) is preferred whenever the GI tract is functional: start within 24-48 hours of ICU admission. Parenteral nutrition (PN) indicated when: GI tract non-functional (ileus, SBO, mesenteric ischemia), EN contraindicated (GI fistula without distal access), or EN fails to meet 60% or more of caloric targets after 3-5 days

Each component has a specific meaning:

  • Indication criteria — The indication criteria recorded for the scenario being assessed.

Note: Interpret the en vs pn indications result against the thresholds and context described above.

How to Use

Enter the indication criteria for the scenario you are assessing. Determine appropriate nutrition route using indication criteria. Enteral nutrition (EN) is preferred whenever the GI tract is functional: start within 24-48 hours of ICU admission. Parenteral nutrition (PN) indicated when: GI tract non-functional (ileus, SBO, mesenteric ischemia), EN contraindicated (GI fistula without distal access), or EN fails to meet 60% or more of caloric targets after 3-5 days. Use the en vs pn indications result to inform your calculation.

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Frequently Asked Questions