Renal / Nephrology Emergency Medicine Standard clinical tool
Fractional Excretion of Sodium (FENa)
Distinguishes pre-renal from intrinsic renal AKI using urine and serum sodium and creatinine.
References
- Espinel CH. The FENa test. Use in the differential diagnosis of acute renal failure. JAMA. 1976.
Related
Curated clinical cross-links plus same-class fallbacks.
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
- New-Onset Atrial Fibrillation · ESC 2020 AF Guidelines; NICE NG196
- Hypertensive Emergency · ESC/ESH 2018 Hypertension Guidelines; NICE NG136
- Bradycardia Management · Resuscitation Council UK ABCDE; ESC 2021 Pacing Guidelines
- Ventricular Tachycardia / Fibrillation · Resuscitation Council UK ACLS; ESC 2022 Ventricular Arrhythmia Guidelines
- Syncope Assessment · ESC 2018 Syncope Guidelines; NICE NG109
- Acute Chest Pain · NICE CG95; ESC 2023 ACS Guidelines
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.