Relation of thyroid hormone levels with fluid-resistant shock among preterm septicemic neonates
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OBJECTIVE: To compare thyroid hormone levels between septicemic preterm neonates with and without shock. METHODS: Preterm septicemic infants with shock constituted Group A (n=36) and those without shock constituted Group B, with groups matched (1:1) for gestation and postnatal age. Those with maternal thyroid disorders, thyrotropic medication and life expectancy <12 hours were excluded. We compared serum tri-iodothyronine (T3), thyroxine (T4) and thyroid-stimulating hormone (TSH) between the groups by univariate and multivariate (adjusting for SNAPPE-II) analysis. RESULTS: Median (IQR) TSH was significantly lower in Group A [1.39 (0.83,3.48)] vs Group B [5.1 (2.32,7.19)] mmol/dL (P<0.001). Serum T3 and T4 were also lower in Group A (P<0.001). On multivariate analysis, none of these measures were independently associated with septic shock. CONCLUSION: Thyroid hormone levels do not independently predict presence of shock among septic preterms.
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