A female patient's hematocrit is 38% with serum sodium of 140 mEq/L. The nurse realizes this patient is demonstrating:
1. Normal hydration status.
2. Over hydration.
3. Dehydration.
4. Sodium imbalance.
Normal hydration status.
Rationale: The normal hematocrit level for a female is between 37% and 47%. The normal osmolality of the blood is 275 to 295 mOsm/kg of water. Serum osmolality can be roughly calculated by doubling the serum sodium value. This patient's serum sodium is 140 mEq/L, which means the serum osmolality is roughly 280 mOsm/kg, or within normal limits. These findings indicate a normal hydration status. Values above 295 indicate a water deficit or dehydration. Values below 275 indicate a water excess or overhydration.
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