Final answer:
Euvolemic hypoNa refers to low sodium concentration in the blood due to excess water accumulation in the body. It can be caused by various factors, including sweating, vomiting, and heart failure.
Step-by-step explanation:
Euvolemic hypoNa, or euvolemic hyponatremia, refers to a condition in which there is a lower-than-normal concentration of sodium in the blood. It is usually associated with excess water accumulation in the body, leading to dilution of sodium. Euvolemic hypoNa can occur due to several causes, including excessive sweating, vomiting, diarrhea, the use of diuretics, and excessive production of urine.
It can also result from an imbalance of sodium in the body's other fluid compartments or from water retention related to edema or congestive heart failure.