why is it....?

Question

important tthat intravenous fluids are the same solute concentration as human blood?

Answer 1

If IV fluids had too high of a concentration, the solute would try to move towards the lower concentration of the blood cells and cause the cells to lyse, or burst. If the concentration of the IV fluids were too low, it would cause the solute inside the blood cells to move toward the lower concentration outside of the cell which would cause the blood cells to shrivel up.

Answer 2

The body needs to maintain a very narrow window of solute conentration and works to keep it. If intravenous fluids are higher or lower in solute concentration, osmosis will move the water into out out of the blood stream and disrupt that, leading to problems that include blood pressure issues.

Answer 3

Same solute concentration means that the IV fluid is isotonic for the cells in the blood. Otherwise, it would be problematic for the blood cells.

Hypertonic solutions have a higher solute concentration and a lower water concentration than the cells. More water diffuses out of the cells than the amount of water that diffuses into the cells. The cells shrink. (Memory trick: hyperrrrrrr shrrrrrink.)

Hypotonic solutions have a lower solute concentration and higher water concentration than the cells. More water diffuses into the cells than the amount of water that diffuses into the cells. The cells swell up and may break open. (Memory trick: cells swell up round like an O hypOOOO.)