Question

For intravenous injections only solutions with osmotic pressure equal to that of 0.9% NaCl solution is used. Why?​

Answer 1

Answer:

The sodium chloride solution which is 0.9% (mass/volume) of sodium chloride solution has equivalent osmotic pressure to the fluid found inside the blood cells. This is the cause that 0.9% of sodium chloride solution, i.e. normal saline is injected intravenously in the case of dehydration and other emergency.

Answer 2

Blood is isotonic with this solution because the osmotic pressure of the fluid inside blood cells is equivalent to that of a 0.9 (m/w) sodium chloride solution.

• Osmosis is the transfer of solvent molecules through a semipermeable membrane from an area with low concentrations of solute to an area with high concentrations.
• Osmotic pressure, which is frequently used to indicate the concentration of a solution, is the pressure that would need to be applied to a pure solvent to stop it from osmosing into the given solution.
• An isotonic solution is defined as two solutions that have the same osmotic pressure over a semipermeable membrane.
• We can also refer to two solutions as being isotonic if their effective mole concentrations are equivalent.
• A drug or other material is injected directly into a vein to enter the bloodstream during the intravenous injection.
• It is one of the quickest routes for a medication to enter the body.
• Solutions with an osmotic pressure equivalent to 0.9% NaCl are utilized for this intravenous injection
• The blood's internal fluid will have an osmotic pressure in this situation equal to that of the 0.9% sodium chloride solution.
• Here, a solution of sodium chloride 0.9% makes the blood isotonic.

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