What is meant by the term iso-osmotic?

The term iso-osmotic refers to a solution that has a balance of osmotic pressure similar to that of human blood plasma. This means that the concentration of solutes in the iso-osmotic solution is equivalent to the concentration of solutes in blood plasma, resulting in no net movement of water across a semipermeable membrane. In practical terms, when an iso-osmotic solution is administered, it helps maintain the proper balance of fluids in the body, preventing complications such as cellular swelling or shrinkage that could occur if the solution were either hypotonic (lower concentration than blood plasma) or hypertonic (higher concentration than blood plasma).

Understanding osmotic pressure is crucial in IV therapy as it directly impacts fluid management and the effectiveness of drug delivery. Recognizing iso-osmotic solutions helps ensure that patients receive appropriate hydration and medication without the risks associated with fluid imbalances.