In a client with a sodium level of 125 mEq/L, which symptom should the nurse anticipate?

In a client with a sodium level of 125 mEq/L, which indicates hyponatremia (low sodium levels), abdominal cramping is a symptom that the nurse should anticipate. This is due to the body's response to the imbalance of sodium, which plays a crucial role in maintaining fluid balance, nerve function, and muscle contraction.

When sodium levels drop significantly, the osmotic balance is disrupted, leading to a shift of water into cells, causing them to swell. This swelling can affect various body systems, particularly the gastrointestinal system. The result can be symptoms such as nausea, vomiting, and abdominal cramping as the gastrointestinal tract responds to the electrolyte imbalance.

While severe headaches may occur with hyponatremia, they are less specific compared to abdominal cramping, which directly relates to the fluid shifts and gastrointestinal disturbances associated with low sodium levels. Increased thirst is typically associated with hypernatremia (high sodium levels) as the body attempts to dilute excess sodium. Excessive urination, or polyuria, can occur in various conditions but is not a typical direct symptom of hyponatremia. Thus, abdominal cramping stands out as a specific and expected symptom in this context.