Baseline characteristics
| Age (years) | ||||
|---|---|---|---|---|
| All (n = 170) | 75–79 (n = 107) | 80–84 (n = 40) | ⩾85 (n = 23) | |
| Values are given as n (%). | ||||
| Ant com art, anterior communicating artery; GOS, Glasgow Outcome Scale; GOS 3, dependent; GOS 4, independent; GOS 5, good recovery; ICH, intracerebral haemorrhage; IVH, intraventricular haemorrhage; MCA, middle cerebral artery; SDH, subdural haematoma; WFNS, World Federation of Neurological Surgeons. | ||||
| *Total <170 because of unknown data. | ||||
| †Percentage of all patients with at least one proved aneurysm. | ||||
| Women | 139 (82) | 88 (82) | 32 (80) | 19 (83) |
| Anticoagulant treatment | ||||
| Yes | 13 (8) | 9 (8) | 4 (10) | — |
| Unknown | 14 (8) | 11 (10) | 2 (5) | 1 (4) |
| Loss of consciousness* | ||||
| No | 68 (40) | 39 (36) | 17 (43) | 12 (52) |
| <1 h | 22 (13) | 14 (13) | 4 (10) | 4 (17) |
| >1 h | 37 (22) | 23 (22) | 11 (28) | 3 (13) |
| Duration unknown | 33 (19) | 23 (22) | 6 (15) | 4 (17) |
| WFNS Scale | ||||
| I | 56 (33) | 38 (36) | 13 (33) | 5 (22) |
| II and III | 54 (32) | 33 (31) | 10 (25) | 11 (48) |
| IV and V | 60 (35) | 36 (34) | 17 (43) | 7 (32) |
| CT* | ||||
| ICH | 34 (20) | 22 (21) | 10 (25) | 2 (9) |
| IVH | 83 (49) | 50 (47) | 18 (45) | 15 (65) |
| SDH | 7 (4) | 6 (6) | 1 (3) | — |
| Ventricles enlarged | 58 (34) | 38 (36) | 13 (33) | 7 (30) |
| Angiography | ||||
| Aneurysm proved | 97 (57) | 61 (57) | 23 (58) | 13 (57) |
| Aneurysm absent | 28 (16) | 18 (17) | 6 (15) | 4 (17) |
| Not performed | 45 (26) | 28 (26) | 11 (28) | 6 (26) |
| Site of aneurysm | ||||
| Carotid | 36 (21) | 23 (22) | 8 (20) | 5 (22) |
| MCA | 16 (9) | 14 (13) | 2 (5) | — |
| Ant com art | 42 (25) | 26 (24) | 10 (25) | 6 (26) |
| Posterior circulation | 14 (8) | 8 (8) | 3 (8) | 3 (13) |
| Patients with >1 aneurysm | 13 (12)† | 8 (11) | 4 (17) | 1 (7) |
| Intervention | ||||
| Clip | 34 (20) | 29 (27) | 4 (10) | 1 (4) |
| Coil | 13 (8) | 7 (7) | 6 (15) | — |
| Wrapping | 2 (1) | 2 (2) | — | — |
| No intervention | 121 (71) | 69 (65) | 30 (75) | 22 (96) |
| Complications | ||||
| Recurrent haemorrhage | 27 (16) | 21 (20) | 3 (8) | 3 (13) |
| Secondary ischaemia | 37 (22) | 24 (22) | 8 (20) | 5 (22) |
| Hydrocephalus | 70 (41) | 47 (44) | 15 (38) | 8 (35) |
| Medical complications | 79 (47) | 43 (40) | 25 (63) | 11 (48) |
| Outcome at discharge | ||||
| In-hospital death | 85 (50) | 53 (50) | 20 (50) | 12 (52) |
| Dependent (GOS 3) | 60 (35) | 37 (35) | 15 (38) | 8 (35) |
| Independent (GOS 4) | 11 (7) | 8 (8) | 2 (5) | 1 (4) |
| Good recovery (GOS 5) | 14 (8) | 9 (8) | 3 (8) | 2 (9) |
| Cause of death | ||||
| Initial haemorrhage | 28 (32) | 17 (29) | 7 (37) | 4 (36) |
| Recurrent haemorrhage | 24 (27) | 18 (31) | 4 (21) | 2 (18) |
| Secondary ischaemia | 8 (9) | 7 (12) | — | 1 (9) |
| Other intracranial complications | 8 (9) | 6 (10) | 1 (5) | 1 (9) |
| Medical complications | 13 (15) | 6 (10) | 5 (26) | 2 (18) |