Early unplanned reoperations in supratentorial brain tumors

Background Surgical treatment of brain tumors were proved to be at highest risk of unplanned reoperation. Therefore, we decided to find possible predictors of complications leading to early unplanned reoperations among patients with supratentorial brain tumors. Methods We retrospectively analysed 328 patients who underwent craniotomy due to supratentorial brain tumor. Early reoperation was defined as reoperation during the same hospital stay. To determine the potential predictors of early reoperation we used univariate and multivariate logistic regression analyses. Results A total of 22 (6.51%) patients underwent unplanned reoperation. Those patients significantly more often were diagnosed with high grade glioma (81.82% vs. 55.70%; p = 0.02). They had lower Red Blood Cells count (4.16 ± 0.82 vs. 4.60 ± 0.56 10 3 /μl; p < 0.01) and haemoglobin (12.58 ± 2.46 vs. 13.7 ± 1.72 g/dl; p < 0.01) and lower haematocrit (36.93 ± 6.84 vs. 39.94 ± 4.66%; p < 0.01) preceding surgery. Surgeries of reoperated patients more often were performed during “on call” hours (17.65% vs. 4.49%; p = 0.02). After adjustment for possible confounders frontal craniotomy (OR: 2.961; 95% CI: 1.042–8.406; p = 0.04)and “on call” hours of surgery (OR: 2.961; 1.042–8.406; p = 0.04) remained independently associated with higher risk of reoperation. Conclusions Frontal craniotomy and surgery during “on call” hours are independently associated with higher risk of reoperation in supratentorial brain tumors.