Table 1.
Overview of included studies for meta-analysis
| References | Type of study | Total | Indication for EVD | Weaning method | Definition of weaning method | |||
|---|---|---|---|---|---|---|---|---|
| aSAH | Angio-negative SAH | Gradual | Rapid | Gradual | Rapid | |||
| Rao et al. [11] | Retrospective CS | 152 | 142 (93.4) | 10 (6.6) | 79 (52) | 73 (48) | Gradual EVD rise by 5 cmH2O until 20 cmH2O, after which the EVD was closed | Immediate EVD closure |
| Jabbarli et al. [12] | Retrospective CS | 965 | 965 (100) | – | 510 (52.8) | 455 (47.2) | Gradual EVD rise by 5 cmH2O every 24 h until 25 cmH2O, after which the EVD was closed | Immediate EVD closure |
| Chung et al. [13] | Prospective CS | 139 | 139 (100) | – | 66 (47.5) | 73 (52.5) | Gradual EVD rise daily | Immediate EVD closure |
| Klopfenstein et al. [14] | Prospective RT | 81 | 81 (100) | – | 40 (49.4) | 41 (50.6) | Gradual EVD rise by 5 cmH2O every 24 h until 25 cmH2O, after which the EVD was closed | Immediate EVD closure |
| Total | 1337 | 1327 | 10 | 695 | 642 | |||
All values presented as number (%) of patients related to the corresponding study, if not otherwise specified
Angio-negative angiogram-negative, aSAH aneurysmal subarachnoid hemorrhage, CS cohort study, EVD external ventricular drain, RT randomized trial