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Effect of rehydration fluid with 75 mmol/L of sodium on serum sodium concentration and serum osmolality in young patients with diabetic ketoacidosis.
Mayo Clinic Proceedings 1994 December
OBJECTIVE: To evaluate whether rehydration of young patients with diabetic ketoacidosis (DKA) by use of a solution that contained 75 mmol/L of sodium would be associated with a decline in serum sodium concentrations.
DESIGN: We retrospectively studied 18 episodes of moderate to severe DKA (mean plasma bicarbonate concentration of 7.8 +/- 0.9 mmol/L) in 17 patients younger than 18 years of age who had been examined at the Mayo Clinic between 1986 and 1990.
MATERIAL AND METHODS: All patients had received an initial fluid bolus (about 20 mL/kg) of 0.9% saline or Ringer's lactate (or both), followed by rehydration with solutions that contained 75 mmol/L of sodium at rates of approximately 3,000 mL/m2 per day. Mean corrected and uncorrected serum sodium concentrations and effective serum osmolality (before and after administration of the fluid bolus and at 6 and 12 hours into treatment) were compared by use of the paired Student t test.
RESULTS: After 12 hours of therapy, we found a significant increase in the mean uncorrected serum sodium level from 135.1 +/- 0.9 mmol/L to 138.1 +/- 0.7 mmol/L (P < 0.05), whereas the mean corrected serum sodium value declined slightly from 143.1 +/- 1.1 mmol/L to 140.4 +/- 0.7 mmol/L (statistically not significant). Serum osmolality based on uncorrected serum sodium concentrations decreased at a rate of 2.6 mmol/kg per hour during the first 6 hours of treatment and remained stable thereafter.
CONCLUSION: In 18 episodes of DKA in young patients, rehydration with fluids that contained 75 mmol/L of sodium at rates of approximately 3,000 mL/m2 per day after administration of a fluid bolus of 0.9% saline or Ringer's lactate (or both) was not associated with a decline in the uncorrected serum sodium concentration.
DESIGN: We retrospectively studied 18 episodes of moderate to severe DKA (mean plasma bicarbonate concentration of 7.8 +/- 0.9 mmol/L) in 17 patients younger than 18 years of age who had been examined at the Mayo Clinic between 1986 and 1990.
MATERIAL AND METHODS: All patients had received an initial fluid bolus (about 20 mL/kg) of 0.9% saline or Ringer's lactate (or both), followed by rehydration with solutions that contained 75 mmol/L of sodium at rates of approximately 3,000 mL/m2 per day. Mean corrected and uncorrected serum sodium concentrations and effective serum osmolality (before and after administration of the fluid bolus and at 6 and 12 hours into treatment) were compared by use of the paired Student t test.
RESULTS: After 12 hours of therapy, we found a significant increase in the mean uncorrected serum sodium level from 135.1 +/- 0.9 mmol/L to 138.1 +/- 0.7 mmol/L (P < 0.05), whereas the mean corrected serum sodium value declined slightly from 143.1 +/- 1.1 mmol/L to 140.4 +/- 0.7 mmol/L (statistically not significant). Serum osmolality based on uncorrected serum sodium concentrations decreased at a rate of 2.6 mmol/kg per hour during the first 6 hours of treatment and remained stable thereafter.
CONCLUSION: In 18 episodes of DKA in young patients, rehydration with fluids that contained 75 mmol/L of sodium at rates of approximately 3,000 mL/m2 per day after administration of a fluid bolus of 0.9% saline or Ringer's lactate (or both) was not associated with a decline in the uncorrected serum sodium concentration.
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