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Nephrol Dial Transplant (2003) 18: V5-V7
© 2003 European Renal Association-European Dialysis and Transplant Association

Clinical prognostic factors of renal outcome in anti-neutrophil cytoplasmic autoantibody (ANCA)-associated glomerulonephritis in elderly patients

Stasa Kaplan-Pavlovcic, Kristina Cerk, Radoslav Kveder, Jelka Lindic and Alenka Vizjak1

Department of Nephrology, University Medical Center Ljubljana, Zaloska 7 and 1 Institut of Pathology, Faculty of Medicine, Korytkova 2, SI-1000 Ljubljana, Slovenia

Background. The purpose of the present study was to determine clinical prognostic factors on renal survival in 37 older patients with antineutrophil cytoplasmic autoantibody-associated pauci-immune necrotizing crescentic glomerulonephritis (ANCA-associated GN) who underwent renal biopsy at our Department between January 1996 and December 2000.

Methods. The date of renal biopsy was used as the start date for entry into the study. Age, gender, 24 h proteinuria, serum creatinine level, blood pressure and ANCA were evaluated. The end-point for renal survival analysis was the start of chronic dialysis.

Results. Twenty-six (70%) patients showed varying degrees of renal insufficiency, nine (24%) patients required dialysis, 13 (35%) were hypertensive (BP ≥140/90 mmHg) and 33 (89%) had proteinuria. During follow-up (31.73±17.39 months), 16% of the patients (6/37) developed end-stage renal disease (ESRD). The actuarial renal survival rate for all patients was 92% at 1 year and 76% at 3 years, for Wegener’s granulomatosis 80% at 1 and 3 years, for microscopic polyangiitis 85% at 1 and 3 years, and for renal limited disease (GN) 75% at 1 and 37% at 3 years. Age (P = 0.024), arterial hypertension (P = 0.018), proteinuria (P = 0.037) and serum cre-atinine ≥400 µmol/l (P = 0.047) were the most important risk factors for ESRD.

Conclusion. The actuarial renal survival rate in elderly patients with ANCA-associated GN was 92% at 1 year and 76% at 3 years. Older age, arterial hypertension, proteinuria and serum creatinine ≥400 µmol/l related to ESRD.

Keywords: ANCA-associated vasculitis; elderly patients; pauci-immune crescentic necrotizing glomerulonephritis; microscopic polyangiitis; Wegener’s granulomatosis

Correspondence and offprint requests to: Professor Stasa Kaplan-Pavlovcic, MD, Department of Nephrology, University Medical Centre, Zaloska 7, SI-1000 Ljubljana, Slovenia. E-mail: stasa.kaplan{at}kclj.si


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