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Table 2:

Characteristics of procedures with hemorrhagic complications

VariableaOverall (n = 92)AP (n = 44)NAP (n = 48)P Value
AVM location
    Cortical77 (84)41 (93)36 (75)<.041
    Deep11 (12)3 (7)8 (17)
    Infratentorial4 (4)0 (0)4 (8)
    Eloquent53 (58)17 (39)36 (75)<.001
Type of HC
    Intraparenchymal hemorrhage46 (50)12 (27)34 (71)<.001
    Subarachnoid hemorrhage35 (38)31 (71)4 (8)
    Intraventricular hemorrhage11 (12)1 (1)10 (21)
Timing of rupture
    Hemorrhage during procedure52 (59)43 (98)9 (18)<.001
    Delay between procedure and hemorrhagic events, hours (range)17.2 (0–240)0.05 (0–2)34.4 (0–240)<.001
Craniotomy for hematoma evacuation, decompressive craniotomy or EVD15 (16)3 (7)12 (25)<.019
  • Note:—EVD indicates external ventricular drainage.

  • a No. (%), mean ± SD or range.