FINAL 01 - Adjusting Tonicity Flashcards
Refers to the osmotic pressure gradient between two solutions separated by a semipermeable membrane
Tonicity
A solution with the same osmotic pressure as body fluids
Isotonic
A solution with lower osmotic pressure; leads to cell swelling (hemolysis)
Hypotonic
A solution with higher osmotic pressure; leads to cell shrinkage (crenation)
Hypertonic
__________ solutions must match blood osmolarity to prevent harm to red blood cells
IV
__________ solutions should be isotonic with tears to avoid irritation
Ophthalmic
___________ solutions help avoid further cellular damage to tissues
Wound irrigation
NaCl equivalent method (Class I or II)
Class I
Cryoscopic/Freezing point depression method (Class I or II)
Class I
White Vincent method (Class I or II)
Class II
Sprowl’s method (Class I or II)
Class II
NaCl or some other solute is added to the solution of the drug to make it isotonic with body fluids (Class I method)
NaCl equivalent method
Value that represents the amount of NaCl that is equivalent in tonicity to 1 gram of drug
E value
Solutions that are isotonic with body fluids have a freezing point of __________
-0.52°C
__________ is the weakest acid among the hydrogen halides
HF