The Effect of Blood Transfusion on Blood Flow to the Intestines of Premature Infants
The purpose of the study is to see if a blood transfusion changes how fast blood flows to the intestines of a premature baby. Blood flow is measured by an ultrasound test. The investigators also look to see if the blood flow to the intestines depends on whether the baby feeds or doesn't feed during the blood transfusion.
Anemia of Prematurity
Procedure: feed during blood transfusion
Procedure: nothing by mouth (NPO) during blood transfusion
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind
Primary Purpose: Prevention
|Official Title:||The Effect of Packed Red Blood Cell Transfusion on Superior Mesenteric Artery Blood Flow Velocity in Premature Infants After Feeding|
- Change in superior mesenteric artery blood flow velocity from pre-to-post feed in the anemic versus transfused state
- Effect of feeding versus NPO during transfusion on the change in superior mesenteric artery blood flow velocity from pre-to-post feed in the anemic versus transfused state
|Study Start Date:||September 2005|
|Study Completion Date:||November 2006|
Currently a disparity exists among the NICU staff at Magee-Womens Hospital regarding whether premature infants should be fed during a blood transfusion. The effects of a blood transfusion on superior mesenteric artery blood flow velocity and the post-prandial hyperemia are not known.
We hypothesize that the post-prandial change in mesenteric blood flow velocity (BFV) will be the same before as after a packed red blood cell (PRBC) transfusion among anemic premature infants.
Sixty anemic infants (25-32 weeks GA, feeding >= 60 cc/kg/day) will undergo pre- and post-feed superior mesenteric artery Doppler studies both before and after a blood transfusion. Infants will be stratified by current weight into two groups (< 1250 grams and > 1250 grams). In each weight stratum the infants will be randomized to feeding or NPO during the PRBC transfusion. Randomization will be by block design, with block sizes ranging from two to six infants. The investigator performing the Doppler studies will remain masked to the feeding assignment of the infant.
The primary outcome for the study is the superior mesenteric artery blood flow velocity response to feeding between anemic and non-anemic states among premature infants. Our secondary outcome is the effect of feeding on BFV between anemic and non-anemic states in these infants. Statistical analysis will include paired and unpaired Student t-tests and regression analysis.
|United States, Pennsylvania|
|Pittsburgh, Pennsylvania, United States, 15213|
|Principal Investigator:||Gretchen Krimmel, MD||Magee-Womens Hospital|