Effect of feed interval and feed type on splanchnic haemodynamics
a Department
of Neonatology, Jessop Hospital for Women, Sheffield S3 7RE, b Department of
Biomedical Science, University of Sheffield, c Department of Medical Physics,
Leicester Royal Infirmary
Correspondence to: Dr Robert Coombs.
Accepted 18 January
1998
AIM
To study
the effect of enteral feeding on splanchnic blood flow velocity in
preterm infants.
METHODCoeliac
axis and superior mesenteric artery (SMA) blood flow velocity were
measured longitudinally in a cohort of 61 babies using Doppler ultrasound.
RESULTSBabies
fed 1 hourly had significantly higher preprandial SMA peak systolic
velocity (PSV) than those fed 3 hourly (70 vs
53 cm/s). Those fed 1 hourly showed no postprandial change
whereas those fed 3 hourly showed significant postprandial hyperaemia. This hyperaemia had longer latency (42 vs 27 mins) and smaller amplitude (31 vs 25 mins)
after expressed breast milk compared with preterm formula. The addition
of long chain polyunsaturated fatty acids to the formulas had no effect
on the postprandial response.
CONCLUSIONHourly
bolus feeding leads to a persistent hyperaemic state in the SMA. The
composition of feeds is an important determinant of the postprandial
response of the SMA to 3 hourly feeding.
© 1998 by Archives of Disease in Childhood
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