To explore an optimal approach for the usage of artificial dura mater applied to the prevention of postoperative cerebrospinal fluid leakage as well as the reduction of postoperative complications in retrosigmoid sinus approach.

To perform retrospective analysis on the data of 231 patients with retrosigmoid sinus approach surgery, and patients were divided into 2 groups (group A and group B) according to the placement of the artificial dura. Group A: artificial dura mater was put in subdural; group B: artificial dura mater was placed in epidural. Temperature changes and associated incidence of complications in different time after surgery were comparatively analyzed in both groups.

Significant differences of changes in body temperature could be spotted between both groups (P<0.01), patients in group A fever desired clinical intervention was 6.1%, the probability of the emergence of cerebrospinal fluid leakage was 0%, the probability of the emergence of intracranial infection 1%, probability of 1% seroma; The fever patients in group B required clinical intervention was 25.6%, the probability of the emergence of cerebrospinal fluid leakage was 3%, the probability of intracranial infection was 3.8%, subcutaneous 7.5% probability of effusion.

When taking retrosigmoid sinus approach surgery, the artificial dura mater fixed below and patched well could significantly reduce the rate of postoperative fever, and effectively reduce the incidence of complications.