... of Calgary, Calgary, AB T2N 2T9, Canada3Department of Medicine, University of Calgary, Calgary, AB T2N 2T9, Canada4Alberta Kidney Disease Network, Calgary, AB T2N 2T9, Canada5Calgary Health ... days of hyponatraemia (IQR = one to three days)and hypernatraemia (IQR = one to five days) was two.Multivariable analysis of patient characteristics The incidence of ICU-acquired hyponatraemia ... weekend admission, nightadmission), clinical (admission diagnosis, admission AcutePhysiology and Chronic Health Evaluation (APACHE) II score,admission Therapeutic Intervention Scoring System (TISS)score)...