Renal Emergency Medicine Anaesthesia / Critical Care Standard physiological calculation
Serum Osmolality / Osmolarity
Calculates estimated serum osmolarity from sodium, glucose, and urea. Compare with measured osmolality to detect an osmol gap (suggesting toxic alcohols or other unmeasured osmoles).
References
- Bhave G, Neilson EG. Volume depletion versus dehydration: how understanding the difference can guide therapy. Am J Kidney Dis. 2011;58(2):302–309.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Drugs
- Potassium chloride with glucose and sodium chloride · IV fluid (mixed)
- Sodium chloride with glucose · IV fluid (saline + dextrose)
- Potassium chloride with calcium chloride and sodium chloride · Crystalloid IV fluid
- Potassium chloride with calcium chloride sodium chloride and sodium lactate · Balanced crystalloid IV fluid
- Potassium chloride with glucose · IV fluid (potassium + dextrose)
- Potassium chloride with sodium chloride · IV fluid (potassium + saline)
Pathways
- Hyperkalaemia Management · UK Kidney Association Guidelines 2020; NICE CKD Guidelines
- Acute Kidney Injury (AKI) · KDIGO 2012 / NICE AKI 2019
- CKD Management · NICE CKD 2021 / KDIGO 2024
- Nephrotic Syndrome · KDIGO 2021
- RRT Initiation · KDIGO 2012 / NICE
- New-Onset Atrial Fibrillation · ESC 2020 AF Guidelines; NICE NG196
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.