Table 6.
Type of BVR in nonaneurysmal subarachnoid hemorrhage and aneurysmal subarachnoid hemorrhage patients.
| Author/year | Unilateral BVR type | Bilateral BVR type | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PMN-SAH (%) | aSAH (%) | PMN-SAH (%) | aSAH (%) | |||||||||||
| A | B | C | A | B | C | AA | AB BB |
AC BC |
CC | AA | AB BB |
AC BC |
CC | |
| Watanabe et al. [17]/2002 | 3 (25) | 2 (17) | 7 (58) | 79 (41) | 70 (37) | 42 (22) | 0 | NS | NS | NS | 22 (22) | NS | NS | NS |
| Alén et al. [18]/2008∗ | 36 (24) | 66 (44) | 47 (32) | 116 (59) | 51 (26) | 31 (15) | 12 (13) | 41 (45) | 38 (42) | 54 (48) | 34 (30) | 24 (21) | ||
| van der Schaaf et al. [19]/2008 | 21 (19) | 48 (43) | 21 (37) | 49 (58) | 26 (31) | 9 (11) | 4 (7) | NS | NS | 29 (53) | 15 (36) | NS | NS | 8 (19) |
| Yamakawa et al. [20]/2008 | 10 (29) | 7 (20) | 18 (51) | 111 (57) | 61 (31) | 23 (12) | 2 (11) | NS | NS | NS | 32 (29) | NS | NS | NS |
| Daenekindt et al. [21]/2008 | 49 (42) | 34 (30) | 32 (28) | 50 (46) | 31 (29) | 27 (25) | 13 (22) | 18 (31) | 28 (47) | 10 (17) | 28 (47) | 21 (36) | ||
| Song et al. [22]/2010 | NS | NS | NS | NS | NS | NS | 10 (31) | 8 (25) | 8 (25) | 6 (19) | 34 (60) | 12 (21) | 9 (16) | 2 (4) |
| Kawamura et al. [23]/2011 | 6 (32) | 8 (42) | 5 (26) | 33 (49) | 27 (35) | 7 (10.4) | 0 | 5 (50) | 3 (30) | 1 (10) | 14 (42) | 12 (36) | 7 (21) | |
| Sabatino et al. [24]/2014∗ | 36 (46) | 31 (39) | 12 (15) | 50 (66) | 8 (11) | 18 (24) | NS | NS | NS | NS | NS | NS | NS | NS |
| Buyukkaya et al. [12]/2014 | NS | NS | NS | NS | NS | NS | 14 (35) | 3 (9) | 12 (34) | 6 (17%) | 26 (74) | 5 (14) | 3 (9) | 1 (3) |
PMN-SAH: perimesencephalic nonaneurysmal subarachnoid hemorrhage; aSAH: aneurysmal subarachnoid hemorrhage; NS means no data was recorded. ∗The idiopathic subarachnoid hemorrhage has not been described in detail; no group was divided.