Which criterion defines short bowel syndrome in the Medicare HPN criteria?

• A. Short bowel syndrome (enteral losses exceed 50% of enteral intake)
• B. Complete mechanical obstruction
• C. Bowel rest for 1 month
• D. Weight maintenance achievable with other methods

Answer: (A)

In Medicare HPN criteria, short bowel syndrome is defined by enteral losses that exceed 50% of enteral intake. This threshold reflects severe malabsorption from a reduced absorptive surface, indicating that the gut cannot meet the body's nutritional needs and parenteral nutrition is required. The other scenarios describe either a mechanical blockage, a period of bowel rest, or the ability to maintain weight with other methods, none of which define SBS within these criteria.