TY - JOUR T1 - Considering exercise-associated hyponatraemia as a continuum JF - BMJ Case Reports DO - 10.1136/bcr-2017-222916 VL - 2018 SP - bcr-2017-222916 AU - Douglas Lewis AU - Andrew Blow AU - Jonathan Tye AU - Tamara Hew-Butler Y1 - 2018/03/09 UR - http://casereports.bmj.com/content/2018/bcr-2017-222916.abstract N2 - Exercise-associated hyponatraemia (EAH) always involves a component of overhydration relative to available exchangeable sodium stores. In the majority of cases, this is purely due to excessive consumption of fluids during exercise. In a lesser number of cases, it is apparent that excessive sodium loss through sweat may play a role by decreasing the amount of acutely available exchangeable sodium. Two cases demonstrating the latter, one in an individual with cystic fibrosis (CF) and another in an endurance athlete without CF, demonstrate how elevated dermal sweat losses may contribute to a relative dilutional EAH along a pathophysiological continuum. ER -