Abstract
Neonates with critical CHD have evidence, by imaging, of preoperative brain injury, although the timing is unknown. We used circulating postnatal serum glial fibrillary acidic protein as a measure of acute perinatal brain injury in neonates with CHD. Glial fibrillary acidic protein was measured on admission and daily for the first 4 days of life in case and control groups; we included two control groups in this study - non-brain-injured newborns and brain-injured newborns. Comparisons were performed using the Kruskal-Wallis test with Dunn's multiple comparisons, Student's t-test, and χ2 test of independence where appropriate. In aggregate, there were no significant differences in overall glial fibrillary acidic protein levels between CHD patients (n=56) and negative controls (n=23) at any time point. By day 4 of life, 7/56 (12.5%) CHD versus 0/23 (0%) normal controls had detectable glial fibrillary acidic protein levels. Although not statistically significant, the 5/10 (50%) left heart obstruction group versus 1/17 (6%) conoventricular, 0/13 (0%) right heart, and 1/6 (17%) septal defect patients trended towards elevated levels of glial fibrillary acidic protein at day 4 of life. Overall, glial fibrillary acidic protein reflecte...Continue Reading
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