Background/Aims: Primary antineutrophil cytoplasmic antibodies (ANCA)-associated systemic vasculitis (AASV) used to have poor prognosis, and renal involvement is its most common manifestation. Few studies have been published focusing on AASV patients with poor prognosis. Methods: From 1997 to 2006, 101 patients with ANCA-associated renal vasculitis (70 microscopic polyangiitis, MPA; 14 Wegener’s granulomatosis, WG; 3 Churg-Strauss syndrome, CSS; 14 renal limited vasculitis, RLV) were diagnosed in Shanghai Ruijin Hospital and 26 deaths were recorded among them. Patients’ data were retrospectively analyzed. Results: Patients with WG, MPA and RLV made up for 23.1% (6/26), 65.4% (17/26) and 11.5% (3/26) of all deaths. No deaths were observed among CSS patients. Infection alone accounted for 13 deaths. Infection together with pulmonary involvement of active vasculitis accounted for 3. Organ-specific involvement of active vasculitis alone caused 8 deaths. Others died of acute myocardial infarction or gastric carcinoma. Compared with patients who survived, nonsurvivors had more severe renal insufficiency and older age (p < 0.01). There was no significant difference regarding clinical presentation at diagnosis and cause of death between patients who survived first remission-induction treatment and those who did not. Infection remained the major cause of death. Conclusion: Infection is the major cause of death in patients with ANCA-associated renal vasculitis, and treatment response might not correlate to severity of disease in patients with poor prognosis. Rational use of immunosuppressants could improve the prognosis.

Keywords:
Antineutrophil cytoplasmic antibodies, Vasculitis
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© 2008 S. Karger AG, Basel
2008
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