Final answer:
The indication of fluid volume excess in a client who received an IV fluid bolus for dehydration is pitting edema in the lower extremities, which shows the accumulation of excess water in the tissues.
Step-by-step explanation:
A nurse who is assessing a client for signs of fluid volume excess after an IV fluid bolus for dehydration should be aware that an increase in fluid can lead to hypervolemia. One clear indication of fluid volume excess is pitting edema in the lower extremities. This condition involves the accumulation of excess water in the tissues, which can be observed by pressing a finger into the swollen area and noticing that the indentation persists for several seconds. Other signs of hypervolemia can include symptoms such as increased blood pressure or increased levels of sodium (Na+), but among the options provided, pitting edema is a direct and unmistakable clinical sign of fluid overload.