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  • Title: The effect of dexamethasone upon platelets and neutrophils of preterm infants with chronic lung disease.
    Author: Bourchier D, Weston PJ.
    Journal: J Paediatr Child Health; 1991 Apr; 27(2):101-4. PubMed ID: 1883647.
    Abstract:
    The effect of a 21-day (reducing dose) course of dexamethasone upon platelet numbers, neutrophil numbers and neutrophil morphology in ventilator-dependent preterm infants with chronic lung disease is reported. Forty-one infants, who were sepsis-free throughout the treatment period, received 46 courses of dexamethasone. In these infants the circulating platelet count increased significantly from 235 +/- 157 to 476 +/- 208 X 10(9)/L. Both total neutrophil numbers (7.94 +/- 7.16 to 19.56 +/- 12.40 X 10(9)/L) and immature neutrophil numbers (1.19 +/- 1.22 to 2.68 +/- 2.58 X 10(9)/L) also showed a significant increase reaching a peak on day 7 of treatment and decreasing thereafter. The immature:total (I:T) neutrophil ratio remained essentially unchanged. Eight other infants who developed serious sepsis during the treatment period showed a fall in both platelets (293 +/- 236 to 140 +/- 170 X 10(9)/L) and total neutrophil numbers (18.61 +/- 10.83 to 15.76 +/- 10.53 X 10(9)/L), together with an increase in immature neutrophils (2.30 +/- 2.80 to 8.22 +/- 13.91 X 10(9)/L) and consequent increase in I:T ratio.
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