Abstract
A 57-year-old male had cardiac arrest during an operation of traumatic acute subdural haematoma (ASDH) and intraparenchymal haemorrhage in the infratentorium due to a great amount of bleeding from the pre-injured venous sinus. After effective bleeding control using a gauze, the patient recovered without additional neurological sequelae. The operation of traumatic ASDH in the infratentorium always poses a risk of excessive bleeding from the injured venous sinus that could be life-threatening to the patient. This risk could be avoided with the effective first method that can immediately control the bleeding.