What is haemolysis? Why intravenous fluid are isotonic to blood ?

Explanation

(i) The osmotic pressure of the blood cells is approximately equal to 7 atm at `37^(@)C.`
(ii) The intarvenous injcctions should have same osmotic pressure as that of the blood (isotonic with blood).
(iii) If the intervenous solutions are too dilute that is hypotonic, the solvent from outside of the cells flow into the cell to normalise the osmotic pressure and this process is called haemolysis causes the cells to burst.
(iv) On the other. hand, if the solution is too concentrated, that is hypertonic, the solvent molecules will flow out of the cells, which causes the cells to shrink and die.
(v) For this reason, the intervenous fluids are prepared such that they ar istonic to blood (`0,9%` mass/volume sodium chloride solution).