Related Experiment Video
Updated: Mar 11, 2026

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
Published on: September 20, 2019
Every three-hour versus every six-hour oral feeding in preterm infants: a randomised clinical trial
Megan M Gray1, Barbara Medoff-Cooper2, Elizabeth M Enlow3
1Department of Pediatrics, University of Washington, Seattle, WA, USA.
Insights
For preterm infants, feeding every six hours versus every three hours did not change the time to full oral feeding. This feeding schedule also showed no significant impact on respiratory issues or hospital stay duration.
Area of Science:
- Neonatal Medicine
- Pediatric Nutrition
- Clinical Trials
Background:
- Preterm infants often require specialized feeding strategies to achieve full oral feeding.
- Optimizing feeding schedules is crucial for improving infant outcomes and reducing healthcare resource utilization.
Purpose of the Study:
- To compare the efficacy of two oral feeding schedules (every three hours vs. every six hours) in preterm infants.
- To determine if a less frequent feeding schedule accelerates the attainment of full oral feeding.
Main Methods:
- A randomized trial involving preterm infants (≤33-week gestation) assigned to either 3-hour or 6-hour oral feeding intervals.
- Primary outcome: time to achieve full oral feeding. Secondary outcomes: respiratory and apnea rates, growth, and length of hospital stay.
Main Results:
- No significant difference was observed between the 3-hour and 6-hour feeding groups for the primary outcome (time to full oral feeding).
- Secondary outcomes, including respiratory and apnea rates and length of stay, were also comparable between the two groups.
Conclusions:
- An every six-hour oral feeding schedule is not superior to an every three-hour schedule for achieving full oral feeding in preterm infants.
- The less frequent feeding schedule did not negatively impact respiratory status or hospital length of stay, with only minor reductions in daily feeding attempts.
Aim:
This trial compares two oral feeding schedules, every three-hour and every six-hour oral feeding attempts, to determine which schedule allows for more rapid attainment of full oral feeding in preterm infants.
Methods:
Infants born at ≤33-week gestation were randomly assigned to receive oral feeding every three hours or every six hours if feeding cues were present. The primary outcome was time to full oral feeding; secondary outcomes include respiratory and apnoea rates, growth and length of stay.
Results:
A total of 55 infants were recruited. There was no difference between the groups in the primary or secondary outcomes.
Conclusion:
For preterm infants fed when oral feeding cues are present, an every six-hour schedule did not alter the time to full oral feeding and had no effect on rates of tachypnoea, apnoea or length of hospital stay compared to every three-hour feeding schedule. An every six-hour oral feeding schedule led to only small reductions in number of oral feeding attempts per day.
More Related Videos
Related Concept Videos
Drug Dosing: Infants and Children
Bioavailability Study Design: Single Versus Multiple Dose Studies
Enteral Nutrition I: Orogastric and Nasogastric Feeding
Orogastric (OG) and nasogastric (NG) feeding are two standard methods used for enteral nutrition. Enteral nutrition is often preferred over...
Enteral Nutrition II: Nasointestinal and Gastrostomy Feeding
Nasointestinal Feeding
Nasointestinal feeding involves placing a tube...
IV Infusion to Oral Dosing: Conversion Methods
Drug Accumulation During Multiple Dosing: Intermittent IV Infusions

