A 42-year-old man with minimal change disease (MCD) presenting with nephrotic syndrome is counseled about disease complications and treatment principles. All of the following statements regarding MCD and nephrotic syndrome management are correct EXCEPT:

Explanation

## Minimal Change Disease and Nephrotic Syndrome Management ### The Incorrect Statement (Option 2) **Key Point:** Albumin infusion is NOT routinely recommended in nephrotic syndrome management. While albumin may be used acutely in severe symptomatic hypoalbuminemia (serum albumin <1.5 g/dL with refractory edema), it is: - Expensive - Carries infection risk - Provides only temporary benefit (albumin is rapidly lost in urine) - Not part of standard first-line edema management The standard approach is **sodium restriction + loop diuretics + treatment of underlying disease**. Albumin is reserved for rare, severe cases with hemodynamic compromise. ### Why the Other Options Are Correct #### Option 0: Steroid Efficacy in MCD **High-Yield:** Minimal change disease has excellent steroid responsiveness: - Complete remission in >90% of adults (even higher in children) - Typical response time: 4–8 weeks - However, relapse occurs in 30–50% of cases - Frequent relapses may require steroid-sparing agents (cyclophosphamide, mycophenolate) This is a classic NEET PG fact and a defining feature of MCD. #### Option 1: Selective vs. Non-Selective Proteinuria **Clinical Pearl:** - **Selective proteinuria** = mainly albumin (small MW proteins) → seen in MCD → better prognosis, >90% steroid response - **Non-selective proteinuria** = mixed albumin + larger proteins (IgG, transferrin) → seen in membranous/membranoproliferative GN → worse prognosis, lower steroid response Selectivity index (urine IgG/urine transferrin ratio) helps predict steroid responsiveness. #### Option 3: NSAIDs and Renal Function **Key Point:** NSAIDs are contraindicated in nephrotic syndrome because: 1. They reduce renal perfusion via COX inhibition 2. They impair autoregulation, especially in volume-depleted states 3. They increase risk of acute kidney injury 4. They may worsen proteinuria 5. They increase hyperkalemia risk if renal function declines Alternatives: acetaminophen, topical NSAIDs (if localized pain). ### Management Algorithm for Nephrotic Syndrome Edema ```mermaid flowchart TD A[Nephrotic Syndrome with Edema]:::outcome --> B[Sodium Restriction<br/>< 2 g/day]:::action B --> C[Loop Diuretic<br/>Furosemide/Torsemide]:::action C --> D{Edema Controlled?}:::decision D -->|Yes| E[Continue + Treat<br/>Underlying Disease]:::action D -->|No| F{Severe Hypoalbuminemia<br/>+ Refractory Edema?}:::decision F -->|No| G[Increase Diuretic Dose]:::action F -->|Yes| H[Consider Albumin Infusion<br/>+ Diuretic]:::action H --> I[Temporary Measure Only]:::outcome E --> J[Definitive: Treat<br/>Primary Disease]:::action ``` ### Summary Table: MCD vs. Other Nephrotic Causes | Feature | MCD | Membranous | MPGN | |---------|-----|-----------|------| | Proteinuria Type | Selective | Non-selective | Non-selective | | Steroid Response | >90% | 30–40% | 50–60% | | Relapse Rate | 30–50% | Rare | Rare | | VTE Risk | Low | High (40%) | Moderate | | Renal Prognosis | Excellent | Variable | Guarded | --- **Warning:** Do not confuse "albumin infusion may help acutely" with "albumin is first-line management." It is NOT. The cornerstone is sodium restriction, diuretics, and treatment of the underlying glomerular disease.