Hyponatremia in a marathoner

Paul Nelson, A. G. Robinson, W. Kapoor, J. Rinaldo

Research output: Contribution to journalArticle

31 Scopus citations


This is the first reported case of hyponatremia associated with increased intracranial pressure, altered mental status, and neurogenic pulmonary edema resulting after a marathon-distance run; the syndrome has been documented previously to occur at distances greater than a marathon. The cause is most likely a combination of salt loss through sweat and retention of high volumes of hypotonic fluids. Preventive measures for the athlete to take include (1) estimating the potential fluid and electrolyte losses before a race and (2) planning a replacement scheme that includes a combination of water and glucose electrolyte solutions. Treatment of the hyponatremia syndrome is primarily supportive and includes infusion of normal saline.

Original languageEnglish (US)
Pages (from-to)78-88
Number of pages11
JournalPhysician and Sportsmedicine
Issue number10
Publication statusPublished - Jan 1 1988


All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Nelson, P., Robinson, A. G., Kapoor, W., & Rinaldo, J. (1988). Hyponatremia in a marathoner. Physician and Sportsmedicine, 16(10), 78-88.