In hyponatremia, does the cell shrink or swell? Why? What happens to the hematocrit?
In hyponatremia, the cell swells because there is not very much sodium in the ECF, so there is more in the cell. The water then follows into the cell. The hematocrit will go down, because the concentration is off, there is a lot more water and still the same RBCs. Keep in mind, hypernatremia probably occurred due to lack of water, hyponatermia probably occurred due to too much water.