Intestinal blood flow by doppler ultrasound: The impact of gestational age and time from first enteral feeding in preterm neonates

Alecia Thompson, Cicero Torres Silva, A. Semih Gork, Dan Wang, Richard A. Ehrenkranz

Research output: Contribution to journalArticle

4 Scopus citations


Objective To explore whether superior mesenteric artery (SMA) peak systolic velocity (PSV) on Doppler ultrasound varies by gestational age (GA) and time from first enteral feeding and has an impact on feeding intolerance. Design/Methods Preterm neonates were assigned to three GA groups at birth, group I: 31 to 356/7 weeks, group II: 27 to 306/7 weeks, and group III: ≤ 266/7 weeks. SMA PSV and clinical and feeding parameters were assessed before and after enteral feed, with the first enteral feed designated as time 1, time 2 = 1 to 4 days (after first feed), time 3= 5 to 7 days, time 4 = 8 to 14 days, and time 5 = 15 to 28. Results Forty-one patients completed the study (group I: n = 17, group II: n = 12, group III: n = 12). There was no significant difference in SMA PSV change after feeding between groups at the start of enteral feeding (p = 0.12). There were differences in change in SMA PSV after feeding at times 2, 3 and 5 (p = 0.003, p = 0.004, p = 0.009, respectively). Patients with feeding intolerance exhibited a smaller increase in SMA PSV after feeding. Conclusions There were significant differences in PSV by GA group. SMA PSV change after feeding was lower in patients who had feeding intolerance compared with those who did not.

Original languageEnglish (US)
Pages (from-to)261-268
Number of pages8
JournalAmerican Journal of Perinatology
Issue number4
Publication statusPublished - Apr 2014



  • Doppler
  • feeding intolerance
  • premature
  • superior mesenteric artery
  • ultrasound

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

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