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Updated: May 23, 2026

Transcutaneous Microcirculatory Imaging in Preterm Neonates
Published on: December 31, 2015
Probiotics supplementation increases intestinal blood flow velocity in extremely low birth weight preterm infants
T Havranek1, M Al-Hosni, E Armbrecht
1Cardinal Glennon Children's Medical Center, Saint Louis University School of Medicine, Saint Louis, MO, USA. thavrane@slu.edu
Insights
Probiotics supplementation significantly improved postprandial intestinal blood flow velocity in extremely low birth weight neonates. This finding suggests a beneficial effect of probiotics on gut circulation in this vulnerable population.
Area of Science:
- Neonatal Medicine
- Gastroenterology
- Microbiology
Background:
- Extremely low birth weight (ELBW) neonates are at high risk for gastrointestinal complications.
- Intestinal blood flow is crucial for gut health and function in neonates.
Purpose of the Study:
- To investigate the effect of probiotics supplementation on intestinal blood flow velocity in ELBW neonates.
- To determine if probiotics enhance postprandial intestinal perfusion.
Main Methods:
- Randomized, double-blind, placebo-controlled trial involving ELBW neonates.
- Probiotics administered with enteral feeding until discharge or 34 weeks postmenstrual age.
- Pulsed Doppler used to measure time-averaged mean velocity (TAMV), peak systolic velocity (PSV), and end diastolic velocity (EDV) preprandially and postprandially.
Main Results:
- A total of 31 infants (15 probiotics, 16 placebo) were analyzed.
- Significant postprandial increase in TAMV observed in the probiotic group compared to placebo (P=0.035).
- Trends towards increased PSV and EDV in the probiotic group.
Conclusions:
- Probiotics administration significantly enhances postprandial intestinal blood flow in ELBW preterm neonates.
- Findings suggest a positive impact of probiotics on intestinal hemodynamics in this population.
Objective:
To determine whether probiotics supplementation affects intestinal blood flow velocity in extremely low birth weight neonates.
Study Design:
In this randomized, double-blind, placebo-controlled study, probiotics were added to the first enteral feeding and continued until discharge or 34 weeks postmenstrual age. Pulsed Doppler was used to measure preprandial and postprandial (at 30 and 60 min) time-averaged mean velocity (TAMV), peak systolic velocity (PSV) and end diastolic velocity (EDV) during the second week of life after ≥ 7 days of probiotics supplementation.
Result:
A total of 31 infants were studied, 15 were randomized to the probiotic and 16 to the placebo groups. There was a significant postprandial increase in TAMV for the probiotic vs the placebo group (P=0.035), with PSV and EDV showing a trend. Demographic and clinical variables were similar between the groups.
Conclusion:
Probiotics administration significantly increases postprandial intestinal blood flow in extremely low birth weight preterm neonates when compared with the placebo group.
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