Fluids, Electrolytes, Acid-Base

)

General Concepts

>

< Osmolality vs osmolarity

★

Osmolality

[H 20)

Milliosmoles per kg of water. The osmolality is the number of

(mOsm/a€nKg solute osmoles (number of particles that contribute to an os-

motic pressure) in solution. For a fully dissociated salt, like [NaCI, the osmolality of 1 mole of salt is 1 Osm of Na +1 Osm

of CI = 2 Osms.

Osmolarity (mOsm/â€OL

[H 20)

Milliosmoles per liter of water. At room temprature, 1L = 1 kg

water, therefore, this is equal to osmolality, but, since the density of water changes with temprature, this measure is tempra-ture dependent. However, for small solute concentrations, it can be assumed the two are equal.

#Fluids #Electrolytes #AcidBase #GeneralConcepts #Osmolality #Osmolarity

#FluidsAndElectrolytes #AcidBaseBalance #GeneralConcepts #Osmolality #Osmolarity

#ACID#BASE