This study aims to evaluate the effect of rectal administration of maternal breast milk on gut microbiota development in preterm infants. Preterm infants are at increased risk of dysbiosis due to immaturity and limited enteral feeding in the early postnatal period. In this randomized controlled study, preterm infants will receive either rectal administration of maternal breast milk or normal saline. The primary objective is to compare gut microbiota composition between the two groups. The findings may provide insight into a novel and non-invasive strategy to support microbiota development in preterm infants.
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Parallel
Rectal irrigation with maternal breast milk
Other interventionMaternal breast milk will be used for rectal irrigation . Rectal irrigation will be performed starting 48 hours after birth, twice daily for 5 consecutive days at 09:00 and 21:00. A 6 Fr feeding tube, 5 mL syringe, thermostatically controlled water bath (set at 37°C), sterile water-based lubricant, and sterile gloves will be used. The enema volume will be calculated as 5 mL/kg and warmed to 37°C. One end of the feeding tube will be connected to the syringe, and the other end will be gently inserted into the rectum after lubrication. The solution will be administered slowly over approximately 3 minutes, and the tube will then be carefully removed.
Rectal irrigation with salin
Other interventionRectal irrigation will be performed starting 48 hours after birth, twice daily for 5 consecutive days at 09:00 and 21:00. A 6 Fr feeding tube, 5 mL syringe, thermostatically controlled water bath (set at 37°C), sterile water-based lubricant, and sterile gloves will be used. The enema volume will be calculated as 5 mL/kg and warmed to 37°C. One end of the feeding tube will be connected to the syringe, and the other end will be gently inserted into the rectum after lubrication. The solution will be administered slowly over approximately 3 minutes, and the tube will then be carefully removed. Normal saline will be used for rectal irrigation as an active comparator.
Gut microbiota composition in preterm infants
Gut microbiota composition will be analyzed using stool samples collected from preterm infants at 7 days and 1 month of life, including assessment of microbial diversity and relative abundance of bacterial taxa, to evaluate differences between study groups.
Time to full enteral feeding
Time to achieve full enteral feeding will be defined as the number of days from birth until the infant tolerates full enteral nutrition without the need for parenteral nutrition.
Feeding intolerance
Feeding intolerance will be defined as the occurrence of bilious emesis, gastric residuals, visibly bloody stools, abdominal distension or tenderness, abdominal discoloration, gastric residual volume exceeding 50% of the previous feeding volume, emesis occurring three or more times within a 24-hour period, or clinical or radiological evidence of necrotizing enterocolitis (NEC).
Necrotizing enterocolitis
Necrotizing enterocolitis will be diagnosed according to modified Bell's criteria stage II or higher.
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Zekai Tahir Burak Women's Health Research and Education Hospital
Lead sponsor
Umraniye Education and Research Hospital
Collaborator
Kocaeli University
Collaborator
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