Renal Fractional Excretion of Sodium (FeNa) & Urea Skill
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Renal Fractional Excretion of Sodium (FeNa) & Urea Skill
Renal Fractional Excretion of Sodium (FeNa) & Urea (FeUrea) Quantitative Evaluator. Differentiates systemic hypovolemia from intrinsic tubular injury with diuretic compensation.
flowchart TD
A[Serum & Urine Chemistries: Na, Cr, Urea] --> B{Diuretic Therapy Active?}
B -- No --> C[Compute FeNa = U_Na * P_Cr / P_Na * U_Cr * 100%]
B -- Yes --> D[Compute FeUrea = U_Urea * P_Cr / P_Urea * U_Cr * 100%]
C --> E{FeNa Threshold}
E -- < 1.0% --> F[Prerenal Hypoperfusion / Dehydration]
E -- > 2.0% --> G[Intrinsic Acute Tubular Necrosis]
D --> H{FeUrea Threshold}
H -- < 35% --> F
H -- > 50% --> GFeatures
Zero PIP Dependencies: Implemented strictly with Python Standard Library (
math,json,sys,typing).Diuretic Compensation: Automatically switches to FeUrea when diuretics confound urinary sodium handling.
Precision Nephrology: Quantitative clearance formulas matching clinical nephrology guidelines.
Dual Architecture: Native Python import and Model Context Protocol (MCP) JSON-RPC 2.0 stdio server.
Related MCP server: MedCalc MCP Server
Quickstart
python example_usage.pyLicense
Apache-2.0
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