期刊
JOURNAL OF HEAD TRAUMA REHABILITATION
卷 23, 期 6, 页码 407-413出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.HTR.0000341437.59627.ec
关键词
brief smell identification tests; chemosensory-evoked potentials; head trauma; olfactometry; sense of smell; Sniffin' Sticks; traumatic brain injury
To determine the incidence of olfactory dysfunction after head trauma using clinical and radiologic findings, quantitative assessment, and electro-physiologic methods. Participants: A total of 190 patients with head trauma of different severity (n = 32 with mild traumatic brain injury (TBI), n = 94 with signs of moderate TBI, and n = 64 with severe TBI) 6 to 32 months prior to the study. Design: Patients were selected retrospectively, surveyed by telephone (n = 190), and screened for olfactory function with Brief Smell Identification Test (n = 82). Those with olfactory dysfunction were assessed as outpatients using the Sniffin' Sticks (n = 19) and olfactory-evoked potential recording (n = 16). Results: Twenty-one participants (11%) reported a decreased sense of smell after trauma. The incidence of olfactory dysfunction after head injury was 12.8%. The results of the odor-evoked potentials were heterogeneous. A significant correlation was found between olfactory dysfunction and the appearance of skull base fractures and intracranial hemorrhage or hematoma. Conclusion: The site of trauma may be more relevant to prognosis than a simple probability (of olfactory loss) based on incidence. Odor-evoked potentials indicate that functional anosmia can occur even when there is some evidence of intact olfactory nerve function.
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