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.
- feeding intolerance
- superior mesenteric artery
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Obstetrics and Gynecology