Emergency reoperations in cranial neurosurgery.

BACKGROUND: Complications after neurosurgical procedures that lead to reoperation are associated with poor outcome and economic costs. Therefore the aim of our study was to establish predictors of reoperation due to complications after cranial neurosurgery. METHODS: We retrospectively analyzed 875 patients who underwent a cranial neurosurgical procedure. We used univariate and multivariate logistic regression analysis to determine the possible predictors of reoperation. RESULTS: A total of 78 (8.91%) patients underwent emergency reoperation. Those patients more often were operated due to brain tumor (50.65% vs. 38.43%; P [0.036) and least often due to head trauma (22.08% vs. 32.99%; P [0.049). Reoperated patients more often underwent frontal craniotomy (26.47% vs. 13.46%; P < 0.01) and least often had burr hole surgery (7.35% vs. 19.21%; P [ 0.016). Patients who did not require reoperation were more often operated during a weekend (5.29% vs. 16.99%; P < 0.01). After adjustment for confounders, weekend surgeries (OR: 0.309; 95% CI: 0.111-0.861; P [ 0.025) remained independently associated with reduced risk of reoperation and frontal craniotomy (OR: 1.355; 95% CI: 1.005-1.354; P [0.046) and lower mean cell hemaglobin concentration (OR: 2.227; 95% CI: 1.230-4.033; P < 0.01) remained independently associated with higher risk of reoperation. CONCLUSIONS: Brain tumor surgery and frontal craniotomy are associated with a higher risk of emergency reoperation. Patients with head trauma, operated on during a weekend, and those who underwent burr hole surgery are less likely to be reoperated. Frontal craniotomy and lower mean cell hemoglobin concentration are independently associated with a higher risk of reoperation and operation during a weekend with lower risk of reoperation.