Ver el código de «Osmolal or osmolar gap»

==Definitions==
*Osmolarity = the total number of particles in solution per liter
*Osmolality = the number of particles per kilogram of solvent

==Calculations==
===Calculated Osm===
Calculated Osm = 2 x Na + (glu/18) + (BUN/2.8) + (ethanol/4.6) + (methanol/2.6) + (ethylene glycol/5) + (acetone/5.5) + (isopropanol/5.9)
*Normal = 275-295

===Osmolal Gap===
Osmolal Gap = measured osm - calculated osm
*Normal = (-)14-10 mOsm/L

==Differential Diagnosis==
*[[EtOH]]
*[[Ethylene glycol]]
*[[Methanol]]
*[[Isopropyl alcohol toxicity]]
*[[Diethylene glycol]]
*[[Propylene glycol]]
*[[Mannitol]]
*Glycerol
*Smaller gaps possible in:
**Ketoacidosis
**[[Lactic acidosis]]
**[[Chronic kidney disease]]

==See Also==
*[[Anion Gap and Osmolar Gap (High)]]
*[[Anion Gap (High)]]
*[[Toxidromes]]

==External Links==
*[http://www.mdcalc.com/serum-osmolality-osmolarity/ MDCalc - Serum Osmolality/Osmolarity]
*[http://www.mdcalc.com/anion-gap/ MDCalc - Anion Gap]

==References==
<references/>

[[Category:FEN]]
[[Category:Toxicology]]