Haemorrhagic and pregnancy characteristics of patients with brain arteriovenous malformation patients with presentation of haemorrhage
| Parameters | Haemorrhage in risk period (n=17) | Haemorrhagic patients of all ages (scenario I, n=311) | Haemorrhagic patients of all ages with at least one previous pregnance (scenario II, n=161) | Haemorrhagic patients of reproductive age (scenario III, n=186) | Haemorrhagic patients of reproductive age with at least one previous pregnance (scenario IV, n=106) |
| Age, years, mean (SD) | 27.00 (5.90) | 28.15 (16.11) | 40.37 (12.57) | 27.23 (8.57) | 32.88 (6.83) |
| Current bAVM rupture, n (%) | 17 (100) | 277 (89.7) | 143 (88.8) | 165 (89.9) | 94 (88.7) |
| Count of bAVM rupture, n (%) | |||||
| 1 | 17 (100) | 302 (97.1) | 156 (96.9) | 179 (96.3) | 102 (96.2) |
| 2 | 0 (0) | 7 (2.2) | 3 (1.9) | 6 (3.2) | 3 (2.8) |
| 3 | 0 (0) | 1 (0.6) | 2 (1.2) | 1 (0.5) | 1 (0.9) |
| Pregnancy count at obliteration or the last follow-up, n (%) | |||||
| 0 | 10 (58.8) | 163 (52.4) | 13 (8.1) | 93 (50.0) | 13 (12.3) |
| 1 | 6 (35.3) | 84 (27.0) | 84 (52.2) | 67 (36.0) | 67 (63.2) |
| 2 | 1 (5.9) | 47 (16.0) | 47 (30.5) | 22 (11.8) | 22 (20.8) |
| 3 | 0 (0) | 14 (4.5) | 14 (8.7) | 4 (2.1) | 4 (3.8) |
| 4 | 0 (0) | 3 (1.0) | 3 (1.9) | 0 (0) | 0 (0) |
| Abortion count at obliteration or the last follow-up, n (%) | |||||
| 0 | 10 (58.8) | 252 (81.0) | 102 (63.4) | 151 (81.2) | 71 (67.0) |
| 1 | 6 (35.3) | 53 (17.1) | 53 (32.9) | 31 (16.7) | 31 (29.2) |
| 2 | 1 (5.9) | 5 (1.6) | 5 (3.1) | 3 (1.6) | 3 (2.8) |
| 3 | 0 (0) | 1 (0.6) | 1 (0.6) | 1 (0.5) | 1 (0.9) |
bAVM, brain arteriovenous malformation.