Peer Reviewed
Sports medicine

Dilutional hyponatraemia in athletes

Kieran Fallon
Abstract
Hyponatraemia should always be included in the differential diagnosis when an endurance athlete collapses at or just over the finish line.
Key Points

    Sports physicians and GPs with an interest in sports medicine often find themselves working in the medical tent adjacent to the finishing line of an endurance event. Blisters and overuse problems are common and generally of little concern, but an athlete who collapses on the finish line or soon afterwards may well induce a significant sympathetic nervous system response in an attending doctor.

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