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J Clin Pathol 58:1219-1220 doi:10.1136/jcp.2005.025916
  • Case report

An unusual case of hyponatraemia in diabetic ketoacidosis

Table 1

 Analyte concentrations at presentation and after stabilisation of the glucose concentration

Analyte Presenting concentrations (0 hours) Intermediate concentrations (3 hours) Glycaemic stable concentrations (17 hours) Katz predicted glycaemic stable concentration (mmol/l) Hillier predicted glycaemic stable concentration (mmol/l)
Glucose 47.7 mmol/l 7.8 mmol/l
Direct sodium 135 mmol/l 139 mmol/l 137 mmol/l 147 164
Indirect sodium 127 mmol/l 136 mmol/l 139 mmol/l 139 156
Direct potassium 6.9 mmol/l 4.5 mmol/l 3.6 mmol/l
Indirect potassium 6.8 mmol/l 4.4 mmol/l 3.7 mmol/l
Total protein 98 g/l 62 g/l 53 g/l
Triglycerides 2.08 mmol/l 1.97 mmol/l 1.13 mmol/l
Cholesterol 5.32 mmol/l 3.63 mmol/l 2.53 mmol/l
Osmolality 336 mOsmol/l 314 mOsmol/l 285 mOsmol/l
Actual sodium gap 8 mmol/l 3 mmol/l −2 mmol/l
Pseudohyponatraemia effect 2 mmol/l −2 mmol/l −3 mmol/l
Adjusted difference 6 mmol/l 5 mmol/l 1 mmol/l

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