What is the primary fluid movement observed with hypotonic solutions?

Hypotonic solutions have a lower concentration of solutes compared to the intracellular fluid within the cells. When a hypotonic solution is introduced to the body, the osmotic gradient created causes water to move from the extracellular space into the cells in an attempt to equalize the solute concentrations between the inside and the outside of the cells. This results in cells swelling as they take in excess water.

This process can lead to significant changes in cell volume and can have physiological consequences, especially in certain situations where rapid movement of fluid into cells occurs. Understanding how hypotonic solutions affect fluid movement is essential in managing IV therapy, ensuring that patients receive the appropriate type of fluid to address their medical needs effectively.