Direct Equilibrium Dialysis Compared with Two Non-dialysis Free T4 Methods in Premature Infants - 12/08/11
, Christopher W. Rabin, DO a, Andrew O. Hopper, MD a, Ricardo L. Peverini, MD a, Nidia R. Vyhmeister, MD a, Jerald C. Nelson, MD b, c
Reprint requests: Douglas D. Deming, MD, Department of Pediatrics, School of Medicine, Loma Linda University, 11175 Campus St, Coleman Pavilion, Suite 11121, Loma Linda, CA 92354.Résumé |
Objective |
To compare the incidence of low free T4 values reported by a direct equilibrium dialysis method to their incidence reported by 2 non-dialysis methods.
Study design |
Ninety-five infants, ≤33 weeks gestational age at birth, admitted to Loma Linda University Children’s Hospital before day 3 of life were studied. Infants were grouped by gestational age ranges: ≤27, 28-30, and 31-33 weeks. Free T4 determinations were measured at 3, 7, and 14 days of life with 3 different free T4 methods. Gestational age–specific newborn reference ranges were available for the direct equilibrium dialysis method only. The only reference ranges available for the non-dialysis free T4 methods were not gestational age specific. Using available reference ranges we classified free T4 values as either low or not low. The incidence of low free T4 values was compared at 3, 7, and 14 days of life.
Results |
Low direct equilibrium dialysis free T4 values were substantially less frequent than non-dialysis free T4 values.
Conclusion |
Substantial free T4 inconsistencies occur between dialysis and non-dialysis free T4 methods in preterm infants. It is unclear how much of this inconsistency is method dependant and how much is reference range dependant.
Le texte complet de cet article est disponible en PDF.Mots-clés : T4, FT4, T3, TSH
Plan
Vol 151 - N° 4
P. 404-408 - octobre 2007 Retour au numéro
Article précédent
- Abnormal Circadian Blood Pressure Regulation in Children Born Preterm
- Umut Selda Bayrakci, Franz Schaefer, Ali Duzova, Sule Yigit, Aysin Bakkaloglu
- Perinatal Stroke and the Risk of Developing Childhood Epilepsy
- Meredith R. Golomb, Bhuwan P. Garg, Karen S. Carvalho, Cynthia S. Johnson, Linda S. Williams
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