Risk factors related to dysosmia after traumatic brain injury

QI Enbo; LI Yiming; HAN Kaiwei; HOU Lijun

Abstract：Objective The risk factors of dysosmia after traumatic brain injury werer discussed.Methods A total of 80 patients with traumatic brain injury as the primary diagnosis in the Neurosurgery of Changzheng Hospital from January 2014 to December 2016 were included in this study and then were divided into olfactory damage group and normal olfactory group.Risk factors of dysosmia after traumatic brain injury were evaluated by analyzing the basic information of patients,causes of injury,Glasgow coma scale (GCS) score on admission,stressed sites,the existence of laceration,hematoma,edema and subarachnoid hemorrhage and the existence of skull base fracture and nasal bone fracture.Results There were 17 cases of dysosmia after traumatic brain injury,accounting for 21％ of the patients with traumatic brain injury.Univariate analysis showed that dysosmia was significantly associated with skull base fracture and contusion or hematoma or edema of frontal lobe,but there was no correlation between dysosmia and surgery,stressed sites,subarachnoid hemorrhage and contusion,hematoma or edema of the temporal andoccipitoparietal lobe.Conclusion We demonstrate that skull base fracture and contusion,hematoma or edema of frontal lobe could be the risk factors for the development of dysosmia after traumatic brain injury.There was no correlation between the development of dysautonomia and the GCS score on admission.