Hyponatraemia, defined as a serum sodium concentration !135 mmol/l, is the most common disorder of body fluid and
electrolyte balance encountered in clinical practice. It can lead to a wide spectrum of clinical symptoms, from subtle to severe
or even life threatening, and is associated with increased mortality, morbidity and length of hospital stay in patients
presenting with a range of conditions. Despite this, the management of patients remains problematic. The prevalence of
hyponatraemia in widely different conditions and the fact that hyponatraemia is managed by clinicians with a broad variety
of backgrounds have fostered diverse institution- and speciality-based approaches to diagnosis and treatment. To obtain a
common and holistic view