3% saline is typically used to treat severe cases of hyponatremia (low sodium). This makes sense because if your blood stream has become hypotonic and it's supposed to be isotonic, then adding a hypertonic solution will help increase the electrolyte imbalance back to normal levels.
Likewise, what IV solution is hypertonic?
IV fluid tonicity
|0.9% NaCl (normal saline)||isotonic|
|Lactated Ringer's solution||isotonic|
|D5W (acts as a hypotonic solution in body)||isotonic|
Is normal saline isotonic or hypertonic?
Anything higher than 295 mOsm/L is considered hypertonic, and anything below 275 hypotonic. There are of course some exceptions, take for instance Normal Saline, or 0.9% NaCl. Its osmolarity is generally around 308, but it is still considered isotonic because it contains the electrolyte combination NaCl as its solute.
Is sodium chloride a hypertonic solution?
3% and 5% Sodium Chloride Injection, USP is a sterile, nonpyrogenic, hypertonic solution for fluid and electrolyte replenishment in single dose containers for intravenous administration. The pH may have been adjusted with hydrochloric acid. It contains no antimicrobial agents.