Which option is NOT an appropriate initiate-and-advance strategy for enteral feeds based on the material provided?

• A. Half-strength 25 mL/hr
• B. Quarter-strength at goal rate
• C. Full-strength 10-40 mL/hour and advance by 10-20 mL/hour every 8-12 hours
• D. 240 mL bolus feeds of full-strength hypertonic formulas every 4 hours

Answer: (D)

Initiation and advancement of enteral feeds centers on minimizing intolerance by starting with a small, tolerable amount and gradually increasing, or using diluted formulas to reduce osmolar load. The option that uses large-volume bolus doses of full-strength hypertonic formula every 4 hours does not fit this approach. Hypertonic formulas have high osmolality, and delivering them as frequent, large boluses greatly increases the osmotic burden on the gut, raising the risk of intolerance, cramping, diarrhea, delayed gastric emptying, and aspiration.

In contrast, strategies like starting with a diluted feed at a modest rate or beginning with full-strength at a very low rate and advancing in small increments (for example by 10–20 mL/hour every 8–12 hours) align with safe progression toward the goal. A quarter-strength feed at the goal rate and a half-strength feed at a low fixed rate (such as 25 mL/hour) are consistent with gradual initiation and titration to tolerance while reducing osmolar stress.