Electrolytes: clinical applications.

The research article investigates the impact of various factors on electrolyte balances in horses, and the significance of sodium and potassium as major electrolytes. The article further discusses the practical implications of electrolyte therapy for horses and casts doubt on the efficacy of common commercial electrolyte supplements, especially for endurance horses. It also explores the potential role of bicarbonate as a buffer against lactic acidosis during strenuous activity.

Factors Influencing Electrolytes and Role of Sodium and Potassium

• The research highlights that changes in serum or plasma values of important electrolytes such as sodium and potassium do not directly reflect changes in the total body status of the horse.
• Estimates of electrolyte alterations can be determined by assessing body weight changes along with plasma sodium values, using a formula proposed by Edelman and his team.

Electrolyte Therapy and Feed Considerations

• Planning of an effective electrolyte therapy should consider that access to green feed or hay is essential in correcting total body potassium depletion.
• Diets that are low in sodium might limit sweat production during exercise, thus impeding the horse’s performance capacity.
• Free access to salt is thought to be the easiest method to ensure adequate sodium availability for horses.

Comparison of Commercial Electrolyte Supplements and Natural Supplementation

• The study expresses skepticism towards the widespread use of various commercial electrolyte supplements administered in horses’ feed, suggesting that most of these could be unnecessary.
• Significant electrolyte deficits are most likely to occur in endurance horses, due to the substantial electrolyte losses that they can experience through sweating.
• In such instances, and when the horse’s access to grass or hay is restricted, supplementation with sodium and potassium chloride may be helpful.

Role of Bicarbonate in Managing Lactic Acidosis

• Bicarbonate use doesn’t seem to have a significant clinical role in endurance or pleasure horses, according to the study.
• Still, the article notes that the use of bicarbonate as a buffer to limit the extent of lactic acidosis during galloping exercise is still an unresolved question, suggesting the need for further investigation in this area.