Rajiv Singh1,2, Thomas Humphries3, Suzanne Mason2, Fiona Lecky2, Jeremy Dawson4, Saurabh Sinha5. 1. a Osborn Neurorehabilitation Unit, Department of Rehabilitation Medicine , Sheffield Teaching Hospitals , Sheffield , UK. 2. b Health Services Research, School of Health and Related Research (ScHARR), Faculty of Medicine, Dentistry and Health , University of Sheffield , Sheffield , UK. 3. c University of Sheffield (Medical School) , Sheffield , UK. 4. d Institute of Work Psychology , Sheffield University Management School , Sheffield , UK. 5. e Department of Neurosurgery , Sheffield Teaching Hospitals , Sheffield , UK.
Abstract
BACKGROUND: While anosmia is common after Traumatic Brain Injury(TBI) (prevalence 4%-68%),studies differ in the associations found with other variables. AIMS: To assess the incidence of anosmia within a large, mixed TBI cohort and examine relationships with other injury or demographic features, including depression and global outcome(GOSE). DESIGN, SUBJECTS AND SETTING: 774 consecutive TBI admissions over 2 years, assessed within a specialist neurorehabilitation clinic. METHODS: All patients assessed at 6-8 weeks and 1 year. Tools included the Extended Glasgow Outcome Scale(GOSE), Rivermead Head Injury Follow-up Questionnaire, Rivermead Post-Concussion Symptoms and the Hospital Anxiety and Depression Score. Olfactory function assessed with sensitivity to coffee granules. RESULTS: The overall incidence of anosmia was 19.7%; mild TBI (9.55%), moderate (20.01%), and severe (43.5%). On a logistic regression, features of TBI severity (p < 0.001 (95% CI 0.098-0.438)), medical comorbidities (p = 0.026 (95% CI 0.301-0.927)) and depression (p = 0.006 (95% CI 1.202-2.981)) were significant. Sixty percent of patients with anosmia at 1 year were found to be clinically depressed, compared to 36% of patients without anosmia. CONCLUSION: In the largest prospective study of post-TBI anosmia, the incidence increased with TBI severity and other medical illness. The presence of anosmia should also raise the clinical suspicion of depression.
BACKGROUND: While anosmia is common after Traumatic Brain Injury(TBI) (prevalence 4%-68%),studies differ in the associations found with other variables. AIMS: To assess the incidence of anosmia within a large, mixed TBI cohort and examine relationships with other injury or demographic features, including depression and global outcome(GOSE). DESIGN, SUBJECTS AND SETTING: 774 consecutive TBI admissions over 2 years, assessed within a specialist neurorehabilitation clinic. METHODS: All patients assessed at 6-8 weeks and 1 year. Tools included the Extended Glasgow Outcome Scale(GOSE), Rivermead Head Injury Follow-up Questionnaire, Rivermead Post-Concussion Symptoms and the Hospital Anxiety and Depression Score. Olfactory function assessed with sensitivity to coffee granules. RESULTS: The overall incidence of anosmia was 19.7%; mild TBI (9.55%), moderate (20.01%), and severe (43.5%). On a logistic regression, features of TBI severity (p < 0.001 (95% CI 0.098-0.438)), medical comorbidities (p = 0.026 (95% CI 0.301-0.927)) and depression (p = 0.006 (95% CI 1.202-2.981)) were significant. Sixty percent of patients with anosmia at 1 year were found to be clinically depressed, compared to 36% of patients without anosmia. CONCLUSION: In the largest prospective study of post-TBIanosmia, the incidence increased with TBI severity and other medical illness. The presence of anosmia should also raise the clinical suspicion of depression.
Authors: Yusuf Mehkri; Chadwin Hanna; Sai Sriram; Ramya Reddy; Jairo Hernandez; Jeff A Valisno; Brandon Lucke-Wold Journal: J Neurol Res Rev Rep Date: 2022-05-20