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Complications of diabetic ketoacidosis and its treatment

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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complications of diabetic ketoacidosis and its treatment

Hypokalaemia and hyperkalaemia

  • are potentially life-threatening conditions and careful management of potassium during treatment of DKA diabetic ketoacidosis is essential
  • potassium should not be prescribed with the initial litre of fluid or if the serum potassium level remains above 5.5 mmol/l since severe dehydration may cause acute pre-renal failure
  • treatment with fluid and insulin will almost always lead to a fall in potassium
    • 0.9% sodium chloride solution with potassium 40 mmol/l (ready-mixed) is recommended if the serum potassium level is below 5.5 mmol/l and the patient is passing urine
  • if the serum potassium level falls below 3.5 mmol/ l, the potassium regimen needs review.

Hypoglycaemia

  • with the correction of ketoacidosis, blood glucose levels will fall very rapidly
  • if not corrected this mayresult in a rebound ketosis driven by counter-regulatory hormones, which can lengthen duration of treatment
  • severe hypoglycaemia is associated with cardiac arrhythmias, acute brain injury and death
  • once the blood glucose falls to 14 mmol /l, intravenous glucose 10% should be commenced alongside the 0.9% sodium chloride solution in order to prevent hypoglycaemia.

Cerebral oedema

  • symptomatic cerebral oedema is relatively uncommon in adults treated for diabetic ketoacidosis, but asymptomatic cerebral oedema may be a relatively common occurrence
  • usually occurs within a few hours of initiation of treatment

Pulmonary oedema

  • rare complication of DKA
  • elderly patients and those with impaired cardiac function are at particular risk and monitoring of central venous pressure should be considered (1)

Reference:


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