Intravenous fluids post marathon : when and why?

Area of Science:

• Sports Medicine
• Emergency Medicine
• Physiology

Background:

• Marathon running presents unique medical challenges, necessitating standardized treatment protocols.
• Intravenous (IV) fluid administration is a common intervention for marathon casualties.
• Current practices for IV fluid use in marathon runners require critical evaluation regarding efficacy and safety.

Purpose of the Study:

• To scrutinize the effectiveness and safety of intravenous (IV) fluid administration in marathon runners.
• To define clear intervention selection criteria and monitoring response for commonly encountered conditions.
• To guide the development of standardized medical management protocols for marathon events.

Main Methods:

• Review of existing medical literature and clinical practices regarding IV fluid use in marathon runners.
• Analysis of evidence supporting IV fluid administration for specific conditions like dehydration, hypotension, and hypoglycemia.
• Identification of areas lacking scientific evidence, such as IV fluid use for nausea, cramping, and cooling.

Main Results:

• Established indications for IV fluids include clinical dehydration and support for unconscious, hypoglycemic, or hypotensive athletes.
• Serum sodium evaluation is recommended before initiating IV fluids.
• Limited scientific evidence supports IV fluid use for persistent nausea, generalized muscle cramping, or whole-body cooling, highlighting a need for further investigation.

Conclusions:

• Marathon medical support leaders must develop and disseminate evidence-based guidelines for IV fluid administration at aid stations.
• Standardized protocols are crucial for optimizing patient outcomes and ensuring the safe and effective use of medical interventions.
• Further research is essential to clarify the role of IV fluids in managing non-critical conditions experienced by marathon runners.