Analysis of risk factors for transformation of traumatic subdural effusion into chronic subdural hematoma

Objective To analyze the risk factors of traumatic subdural effusion (TSE) transforming into chronic subdural hematoma (CSDH). Methods A totalof75 patients with TSE after traumatic brain injury (TBI) were included from December 2017 to July 2019. CT or MRI reexamination during treatment and follow⁃up were performed to observe whether CSDH was transformed and relevant influencing factors were analyzed. Univariate and multivariate Logistic regression analyses were performed to screen the risk factors for the transformation of TSE into CSDH. Results Logistic regression analysis showed that the higher effusion density (OR =6.021, 95%CI: 1.047-34.631; P =0.044), subdural effusion increases for a long time (OR = 1.253, 95%CI: 1.002-1.568; P = 0.048), the thicker effusion (OR = 2.080, 95%CI: 1.267-3.414; P =0.004) and brain atrophy (OR =35.392, 95%CI: 1.397-896.474; P =0.031) were risk factors for the transformation of TSE into CSDH. Conclusions The subdural effusion increases for a long time, higher effusion density, thicker effusion and brain atrophy are the risk factors associated with the transformation of TSE into CSDH. DOI：10.3969/j.issn.1672⁃6731.2020.07.008