renal emergency-medicine
Fractional Excretion of Sodium (FENa)
Differentiates pre-renal AKI from intrinsic renal AKI. FENa <1% suggests pre-renal cause; >2% suggests intrinsic renal disease.
References
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Drugs
- Mannitol (Osmotic Diuretic — Renal/Neurological) · Acute Oliguric Renal Failure / Raised ICP
- Thiopental Sodium · Barbiturate Induction Agent
- Sodium Bicarbonate · Alkalising Agent / Electrolyte
- Sodium Chloride 3% (Hypertonic Saline) · Hypertonic Electrolyte Solution — ICP/Hyponatraemia Management
- Sodium Nitroprusside · Vasodilator — Nitric Oxide Donor (IV)
- Dantrolene sodium · Skeletal muscle relaxant (RyR1 inhibitor)
Pathways
- Hyperkalaemia Management · UK Kidney Association Guidelines 2020; NICE CKD Guidelines
- Rhabdomyolysis · Renal Association 2018; UpToDate 2024
- Hypocalcaemia (Adult) · Society for Endocrinology
- SIADH (Endocrine Perspective) · European Hyponatraemia Guidelines 2014
- Hepatorenal Syndrome · EASL 2018; ICA 2015
- Acute Kidney Injury (AKI) · KDIGO 2012 / NICE AKI 2019
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.