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Table 1 Characteristics of 9 patients with AAV at the time of PLEX

From: Clinical implication of plasma exchange on life-threatening antineutrophil cytoplasmic antibody-associated vasculitis

Variables

Values

Demographic data at PLEX

 Age (years)

71.0 (25.0)

 Male gender (N, (%))

5 (55.6)

AAV variants (N, (%))

 MPA

6 (66.7)

 GPA

3 (33.3)

 EGPA

0 (0)

Gap-time from diagnosis to PLEX (days)

69.0 (127.0)

ANCA and anti-GBM within 4 weeks before PLEX (N, (%))

 MPO-ANCA

4 (44.4)

 PR3-ANCA

2 (22.2)

 ANCA negativity

3 (33.3)

 Anti-GBM

0 (0)

AAV related indices at PLEX

 BVAS

20.0 (14.0)

 FFS

3.0 (1.5)

Clinical manifestations at PLEX (N, (%))

 General

9 (100)

 Cutaneous

1 (11.1)

 Mucous membrane/Eyes

0 (0)

 ENT

3 (33.3)

 Pulmonary

7 (77.8)

 Cardiovascular

3 (33.3)

 Abdominal

0 (0)

 Renal

7 (77.8)

 Nervous systemic

2 (22.2)

Reason for PLEX (N, (%))

 DAH

6 (66.6)

 RPGN

2 (22.2)

 Pericarditis with cardiac tamponade

1 (11.1)

Methylprednisolone pulse therapy at PLEX (N, (%))

9 (100)

Administered immunosuppressive drugs before PLEX (N, (%))

 CYC

4 (44.4)

 RTX

3 (33.3)

 AZA

1 (11.1)

 MMF

1 (11.1)

 TAC

1 (11.1)

 None

4 (44.4)

Administered immunosuppressant drugs at or after PLEX (N, (%))

 CYC

1 (11.1)

 RTX

5 (55.6)

 AZA

1 (11.1)

 MMF

1 (11.1)

 TAC

0 (0)

 None

2 (22.2)

Follow-up duration (days)

92.0 (225.5)

All-cause mortality (N, (%))

4 (44.4)

Cause of death (N, (%)) (N = 4)

 Sepsis

3 (75.5)

 No response to PLEX

1 (25.5)

  1. Values are expressed as median (interquartile range (IQR)) or number (percentage)
  2. ANCA antineutrophil cytoplasmic antibody, AAV antineutrophil cytoplasmic antibody-associated vasculitis, PLEX plasma exchange, MPA microscopic polyangiitis, GPA granulomatosis with polyangiitis, EGPA eosinophilic GPA; MPO: myeloperoxidase, PR3 proteinase 3, GBM glomerular basement membrane, BVAS Birmingham vasculitis activity score, FFS five factor score, ENT ear nose throat, DAH diffuse alveolar haemorrhage, RPGN rapidly progressive glomerulonephritis, CYC cyclophosphamide, RTX rituximab, AZA azathioprine, MMF mycophenolate mofetil, TAC tacrolimus