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Randomised controlled trial of acetate in preterm neonates receiving parenteral nutrition

Abstract

AIMS To determine whether by partly replacing chloride with acetate in parenteral nutrition, hyperchloraemia, metabolic acidosis, and the subsequent use of interventions such as colloid infusion, alkali treatment, increased assisted ventilation, would be reduced.

METHODS Fifty eight neonates of less than 32 weeks gestation, receiving parenteral nutrition from days 3 to 10, were given either standard parenteral nutrition or a novel formulation with replacement of any chloride dose > 3 mmol/kg/day as acetate.

RESULTS Acetate (0 to 14.2 mmol/kg/day) reduced the incidence of hyperchloraemia from 77% to 25%, and caused an increase in base excess from day 5 onwards (mean intergroup difference 3.6 to 9.9 mmol/l), an increased pH (day 8, 7.34 vs 7.26), with an increased pCO2 (1 kPa). The acetate group received less bicarbonate (median 0 mmol vs 4.8 mmol) and less colloid (41 ml/kg vs 204 ml/kg). There was no difference in any parameter of assisted ventilation.

CONCLUSION Acetate in neonatal parenteral nutrition reduces metabolic acidosis and hyperchloraemia.

  • parenteral nutrition
  • sodium acetate
  • metabolic acidosis
  • hyperchloraemia

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