Osmolality
last authored:
last reviewed:
Introduction
ECF osmolality can be approximated using the major solutes: (2 x sodium) + (glucose / 18 ) + (BUN / 2.8)
Measured osmolality usually equals the calculated osmolality. However, if other osmotically active substances are present, the measured value will be higher, and the osmolality gap suggests the presence of toxins.
Causes of Osmolar Gap
Methanol, mannitol
Alcohols: ethanol, isopropanol
Dyes
Glycols, glycerol
Acetone
Sorbitol
Indications
Contraindications
Clinical Vignette 1
A person takes this treatment for this reason due to concerns re: condition
This happens.
How do you respond?
Clinical Vignette 2
Additional Resources
Topic Development
created: DLP, Aug 09
authors: DLP, Aug 09
editors:
reviewers: