Evaluation of risk factors for postpartum cerebral venous sinus thrombosis, a multicenter retrospective observational study

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The postpartum period is a well-defined risk factor for cerebral venous sinus thrombosis (CVST). However, it is unclear which patients are at risk for CVST in the postpartum period. Thus, determining some CVST risk factors in postpartum patients may be useful for preventing the disorder in this population. Previous studies have shown that preeclampsia (PE) is a risk factor for pulmonary thromboembolism and deep vein thrombosis, but whether it is related to postpartum CVST has not yet been evaluated. This study aimed to determine if this relationship exists. This study was a case-control study of retrospectively screened patients diagnosed with CVST between 2018 and 2023 at the Uludağ University Faculty of Medicine Department of Neurology, the Eskişehir Osmangazi University Faculty of Medicine and the Bursa City Hospital Health Sciences University Department of Neurology. All of the women who delivered between 2018 and 2023 at the Uludağ University Faculty of Medicine Department of Obstetrics and Gynaecology were included in the control group. In total, 57 out of 322 cases and 4299 out of 4452 controls were included in this study. A nonsignificant relationship was found between CVST and spinal anesthesia, but a significant relationship was found between PE and stillbirth. Women with PE who had recently delivered were found to be at increased risk of developing CVST. The primary limitation of this study is that it was retrospective, and the control group was hospital-based. We recommend that these findings be confirmed by multicenter prospective international studies.