“…3 Due to unknown reasons, cerebral subdural hemorrhage after spinal anesthesia occurs more regularly on the left side, as early as six hours and at the latest by twenty-nine weeks. 5 Risk factors for the emergence of subdural collections are cerebral atrophy, cerebral aneurysms, blood dyscrasias, platelet anti-aggregation drugs, arteriovenous malformations, pregnancy, dehydration, alcohol consumption, multiple punctures, thick bore needles, epidural needles, and fenestrations from previous punctures. 5,6,7 Spinal anesthesia performed with fine needles of the Whitacre-, Sprotte-and Atraucan-type bevel have not been reported to prevent this complication.…”