... assessedusing the APACHE II score and intensity of care using theTISS score [15,16].Patients were classified into three categories of admissiondiagnosis, based on data recorded by the admitting physician,medical, ... hyponatraemia and hypernatraemia arecommon in the critically ill. The risk of ICU-acquired sodiumdisturbances appear to vary according to patient characteris-tics. Finally, ICU-acquired hyponatraemia ... epidemiology of intensive care unit-acquired hyponatraemia and hypernatraemia in medical-surgical intensive care unitsHenry Thomas Stelfox1,2,3, Sofia B Ahmed3,4, Farah Khandwala5, David Zygun1,2,6,...