Management of Adult Post-Infectious Glomerulonephritis with Rapidly Progressive Glomerulonephritis

Initial Management

The primary management for adults with post-infectious glomerulonephritis presenting with rapidly progressive glomerulonephritis (RPGN) is aggressive treatment of the underlying infection with appropriate antibiotics, combined with supportive care, as recommended by the Kidney International guidelines 1, 2
The American Journal of Kidney Diseases suggests that immunosuppression with cyclophosphamide and glucocorticoids should be reserved only for severe crescentic disease with rapidly deteriorating renal function 3, 4

The American Journal of Kidney Diseases recommends serologic testing for anti-GBM antibodies, ANCA, ANA, complement levels, and evidence of recent streptococcal infection 3
Kidney biopsy is crucial when diagnosis is uncertain, atypical presentation occurs, C3 remains low beyond 12 weeks, or to assess disease activity and chronicity, as suggested by the American Journal of Kidney Diseases 4

The Kidney International guidelines recommend antibiotic treatment even in the absence of active infection to decrease antigenic load 1, 2
Penicillin is first-line for streptococcal infections, according to the Praxis Medical Insights guidelines 2

The Kidney International guidelines suggest that all patients require intensive supportive management, including sodium restriction, loop diuretics, antihypertensive medications, and dialysis as needed 1, 2
The Praxis Medical Insights guidelines recommend treating metabolic acidosis if serum bicarbonate is low 2

The Kidney International guidelines suggest that the decision to use immunosuppression depends on clinical severity and histologic findings, and should be considered for severe crescentic disease with rapidly deteriorating renal function 1, 6
The American Journal of Kidney Diseases recommends cyclophosphamide plus glucocorticoids following protocols similar to ANCA-associated vasculitis 4

The Praxis Medical Insights guidelines recommend monitoring serum creatinine, eGFR, blood pressure, urinalysis, electrolytes, and acid-base status weekly to monthly 2, 5
The Praxis Medical Insights guidelines also suggest monitoring C3 complement levels, which should normalize by 8-12 weeks in uncomplicated cases 5

The Praxis Medical Insights guidelines suggest that poor prognostic indicators include need for hemodialysis at presentation, endocarditis, and infections 2, 5
The Praxis Medical Insights guidelines also recommend monitoring for mortality risk factors, including respiratory failure, heart failure, and infections 2