Intravenous solutions with electrolytes already pre-mixed in them are available commercially or can be prepared in the hospital pharmacy. Using these pre-mixed solutions eliminates the step of staff mixing solutions on patient care units, which has a risk of error, especially when the unit is very busy. It also eliminates the need to keep concentrated electrolytes on patient care units and therefore removes the risk of accidental administration of electrolytes in concentrated form, which is usually lethal.