What is a hypertonic solution?

A hypotonic solution has a lower solute concentration than the fluid inside a cell. A hypertonic solution has a higher solute concentration than the fluid inside a cell. When compared to the hypertonic solution a hypotonic solution requires a lower osmotic pressure than the solution. A common example of a hypotonic solution is 0.45% normal saline (half normal saline). When a patient develops diabetic ketoacidosis, the intracellular space becomes dehydrated, so the administration of a hypotonic solution helps to rehydrate the cells.Examples of when hypertonic solutions are used include to replace electrolytes (as in hyponatremia), to treat hypotonic dehydration

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