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1.
Heliyon ; 10(9): e30537, 2024 May 15.
Article in English | MEDLINE | ID: mdl-38756564

ABSTRACT

Background: Understanding physician approaches to pain treatment is a critical component of opioid and analgesic stewardship. Practice patterns learned in residency often persist longitudinally into practice. Objective: This study sought to identify salient factors and themes in how resident physicians assess and manage pain. Methods: Video-recorded focus groups of internal medicine and general surgery residents were conducted via videoconferencing software. Data were analyzed using a ground theory approach and constant comparative method to identify themes and subthemes. Focus groups occurred in September and October 2020. Results: 10 focus groups including 35 subjects were conducted. Four general themes emerged: (1) Assessment considerations; (2) Education & Expectations; (3) Systems Factors; and (4) Management considerations. Participants indicated that while it is important to treat pain, its inherently subjective nature makes it difficult to objectively quantify it. The 0-10 numeric rating scale was problematic and infrequently utilized. Patient expectations of no pain following procedures was viewed as particularly challenging. The absence of formal best practices to guide pain assessment and management was noted in every group. Management approaches overall very highly variable, often relying on word-of-mouth relay of the preferences of specific attending physicians. Conclusions: Pain is highly nuanced and resident physicians struggle to balance pain's subjectivity with a desire to quantify and appropriately treat it. The 0-10 numeric rating pain scale, though ubiquitous, is problematic. Priority areas of improvement identified include education for both patients and physicians, functional pain scales, and expansion of existing effective resources like the nursing pain team.

2.
Article in English | MEDLINE | ID: mdl-38616565

ABSTRACT

KEY POINTS: Patients with traumatic brain injury (TBI) had worse olfactory quality of life (QoL) and Sino-Nasal Outcome Test-22 scores compared to a normal cohort. A worse olfactory QoL correlated with concussion symptom burden. Olfactory dysfunction among TBI patients should be addressed to improve overall outcomes.

3.
Kans J Med ; 16: 194-199, 2023.
Article in English | MEDLINE | ID: mdl-37791020

ABSTRACT

Introduction: With the launch of the SARS-CoV-2 (COVID-19) vaccines, a new cohort of people exists who do not consider themselves to be completely vaccine-hesitant, but are specifically COVID-19 vaccine hesitant (CVH). There is a need to learn from CVH parents, to ensure their concerns are addressed, and allow them to comfortably vaccinate their children against the COVID-19 virus. Methods: Surveys were used to identify CVH parents. Using semistructured interviews, we assessed the attitudes of CVH parents toward COVID-19 vaccination in children. An inductive coding method was used to analyze transcripts and develop themes. Results: Fourteen parents were interviewed. Seven (50%) had received the COVID-19 vaccine even though they had doubts. Six reported that education about mRNA vaccine production was helpful in deciding to get vaccinated. Parents were reluctant regarding pediatric vaccination due to lack of long-term studies and concerns about adverse impact on childhood development. Personal physicians were the most trusted source of information and direct conversations with them were the most influential, as opposed to public health leaders like the U.S. Centers for Disease Control and Prevention and the National Institutes of Health. Conclusions: Our findings suggested that physicians are among the most trusted sources of information regarding the COVID-19 vaccine for CVH parents. Rather than use broad public health messaging and advertising to increase rates of vaccination, further investigation into training health professionals on how to counsel CVH patients effectively may be a higher impact area of opportunity to improve vaccine response rates.

4.
Int J MS Care ; 25(3): 131-136, 2023.
Article in English | MEDLINE | ID: mdl-37250191

ABSTRACT

BACKGROUND: Although studies regarding multiple sclerosis (MS) and olfactory dysfunction (OD) have been previously described and summarized, there is not a sole review of longitudinal studies regarding the matter. This review examines the existing literature investigating MS and its effect on olfaction. In addition, the role of OD in the diagnosis and prognosis of MS is explored. METHODS: A scoping review of the literature was performed covering longitudinal studies investigating MS and OD. Systematic searches of PubMed, Google Scholar, Web of Science, Embase, PsycInfo, Cumulative Index to Nursing and Allied Health Literature, AgeLine, and MEDLINE were performed using terms that encompassed MS and olfaction. The aim of this review was to build on the existing literature by summarizing only findings that were demonstrated longitudinally. RESULTS: Of 6938 articles identified from the search, 9 met the inclusion criteria: longitudinal observation of relapsing-remitting or progressive MS. Olfaction was measured and scored using various testing arrays, and these scores were then correlated with a multitude of clinical markers. Across all studies, patients with MS demonstrated increased OD. Longitudinally, 2 contrasting patterns were identified: (1) clinical markers of acute inflammation correlated with an increased odor threshold and (2) clinical markers of neurodegeneration, or progression of disease, correlated with a decreased ability to discriminate and identify odors. CONCLUSIONS: These studies suggest that olfaction is a dynamic, dependent variable of neurodegeneration, correlating with inflammation and clinical markers. This opens the door for future exploration of olfaction's relationship with MS diagnosis, characterization, and therapeutic response.

5.
Kans J Med ; 16: 35-40, 2023.
Article in English | MEDLINE | ID: mdl-36845261

ABSTRACT

Introduction: The authors investigated a novel functional pain scale, the Activity-Based Checks (ABCs) of Pain, following open urologic surgery. The primary objectives were to establish the strength of the correlation between the ABCs and the numeric rating scale (NRS) and determine the impact of functional pain on the patient's opioid requirements. We hypothesized that ABC score would correlate strongly with NRS and that the ABC score during hospitalization would be more closely correlated with the number of opioids prescribed and used. Methods: This prospective study included patients at a tertiary academic hospital undergoing nephrectomy and cystectomy. The NRS and ABCs were collected pre-operatively, during the inpatient stay, and at the one-week follow-up. Milligrams of morphine equivalents (MMEs) prescribed at discharge and the MME reportedly taken during the first post-operative week were recorded. Spearman's Rho was used to assess the correlation between scale variables. Results: Fifty-seven patients were enrolled. The ABCs correlated strongly with the NRS at baseline and post-operative appointments (r = 0.716, p < 0.001 and 0.643, p < 0.001). Neither the NRS nor the composite ABCs score was predictive of outpatient MME requirements; the ABCs function, "Walking outside the room" significantly correlated to MMEs taken after discharge (r = 0.471, p = 0.011). The greatest predictor of MMEs taken was the number of MMEs prescribed (0.493, p = 0.001). Conclusions: This study highlighted the importance of post-operative pain assessment that takes functional pain into consideration to evaluate pain, inform management decisions, and reduce opiate reliance. It also emphasized the strong relationship between opioids prescribed and opioids consumed.

6.
Laryngoscope Investig Otolaryngol ; 8(1): 40-45, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36846400

ABSTRACT

Objective: To determine the facilitators of and barriers to adherence to use of intranasal pharmacotherapy (daily intranasal corticosteroids and/or antihistamine, and nasal saline irrigation [NSI]), for allergic rhinitis (AR). Methods: Patients were recruited from an academic tertiary care rhinology and allergy clinic. Semi-structured interviews were conducted after the initial visit and/or 4-6 weeks following treatment. Transcribed interviews were analyzed using a grounded theory, inductive approach to elucidate themes regarding patient adherence to AR treatment. Results: A total of 32 patients (12 male, 20 female; age 22-78) participated (seven at initial visit, seven at follow-up visit, and 18 at both). Memory triggers, such as linking nasal routine to existing daily activities or medications, were identified by patients as the most helpful strategy for adherence at initial and follow-up visits. Logistical obstacles related to NSI (messy, takes time, etc.) was the most common concept discussed at follow-up. Patients modified the regimen based on side effects experienced or perceived efficacy. Conclusions: Memory triggers help patients adhere to nasal routines. Logistical obstacles related to NSI can deter from use. Health care providers should address both concepts during patient counseling. Nudge-based interventions that incorporate these concepts may help improve adherence to AR treatment. Level of Evidence: 2.

7.
J Surg Educ ; 80(1): 1-6, 2023 01.
Article in English | MEDLINE | ID: mdl-36220759

ABSTRACT

OBJECTIVE: The objective of this study was to describe the implementation of Clinical Anatomy Mentorship Program (CAMP), a novel near-peer surgical anatomy teaching program, into the KU School of Medicine (KUSOM) Surgery Clerkship curriculum. DESIGN: Prospective qualitative and quantitative study. SETTING: Single institution, tertiary care hospital. PARTICIPANTS: All M3s at KUSOM on their surgery clerkship were eligible for inclusion for the learner cohort, n = 106. A group of M4s self-identified as CAMP mentors were eligible for inclusion for the teacher cohort, n = 40. RESULTS: M3s have statistically significant higher self-efficacy (p < 0.001) scores after participating in CAMP. Among open-ended comments written by M3s, significant themes highlighted that CAMP taught them a much-needed refresher on anatomy, gave them an introduction to surgical anatomy, and felt peer-to-peer teaching created a safe environment to ask questions. M4 mentors reported statistically significant (p < 0.001) increases in self-efficacy and confidence in teaching skills after teaching CAMP sessions. Among open-ended comments written by M4 mentors, significant themes highlighted that CAMP helped them develop their teaching skills and confidence in the operating room. CONCLUSIONS: In line with current medical education practices, KUSOM has significantly decreased anatomy in the curriculum. We responded to this shift by implementing CAMP, designed to address specific medical student needs for a surgically oriented anatomy instruction. CAMP has been effective at addressing student concerns about anatomy knowledge gaps. CAMP has enhanced self-efficacy, anatomy knowledge, and operating room exposure in M3s, and self-efficacy, teaching skills, surgical anatomy knowledge, and surgical confidence in M4s.


Subject(s)
Anatomy , Education, Medical , Students, Medical , Humans , Prospective Studies , Curriculum , Learning , Teaching , Peer Group , Anatomy/education
8.
Front Neurol ; 13: 910062, 2022.
Article in English | MEDLINE | ID: mdl-35899262

ABSTRACT

Background: Dysfunction in the olfactory, auditory, and vestibular systems are commonly seen in aging and are associated with dementia. The impact of sensory loss(es) on cognition is not well understood. Our aim was to assess the relationships between performance on objective multisensory testing and quantify the impact of dysfunction on cognition. Methods: Patients presenting with subjective hearing loss presenting to a tertiary care otologic/audiologic clinic were identified and underwent multisensory testing using the Affordable, Rapid Olfactory Measurement Array (AROMA), pure tone audiometric evaluations, and the Timed "Up and Go" test. Cognitive impairment (CI) was assessed via the Montreal Cognitive Assessment (MoCA) was also administered. Key Results: 180 patients were enrolled. Thirty one percentage (n = 57) screened positive for cognitive impairment. When evaluating single sensory impairments, we found that olfactory dysfunction, gait impairment, and sensorineural hearing loss were all statistically significantly (p < 0.05) associated with a higher risk of cognitive impairment (ORs 3.89, 3.49, and 2.78, respectively) for CI. Multisensory impairment was significantly associated with cognitive impairment. Subjects with dysfunction in all domains were at the highest risk for cognitive impairment (OR 15.7, p < 0.001) vs. those with impairment in 2 domains (OR 5.32, p < 0.001). Conclusion: Dysfunction of the olfactory, auditory, and vestibular systems is associated with a significantly increased risk of CI. The dramatically increased risk of CI with multisensory dysfunction in all three systems indicated that MSD may synergistically contribute to CI.

9.
Otolaryngol Head Neck Surg ; 167(5): 896-899, 2022 11.
Article in English | MEDLINE | ID: mdl-35290133

ABSTRACT

The objective of this study was to identify specific olfactory phenotypes-patterns of olfactory performance-across distinct cohorts with or without olfactory dysfunction (OD). Adult patients underwent testing via a novel olfactory testing methodology in 1 of 4 groups based on health status: sinonasal inflammatory condition (chronic rhinosinusitis or allergic rhinitis), ≥4 weeks of self-reported OD after resolved COVID-19 infection, Alzheimer's disease, and healthy control. Participants' scores for each scent were normalized on a scale of 0 to 1 relative to their worst and best scores. Agglomerative hierarchal cluster analysis was performed on normalized data for the COVID-19 and sinonasal cohorts. Resulting clusters from the penultimate merger revealed a sensitivity of 81% and specificity of 63% for the detection of patients with COVID-19. These results support that there are olfactory phenotypes that may discriminate COVID-19 OD from sinonasal inflammatory disease. These phenotypes will likely become increasingly leveraged in the workup and treatment of patients with OD.


Subject(s)
COVID-19 , Olfaction Disorders , Sinusitis , Humans , Smell , Sinusitis/diagnosis , Phenotype
10.
Otolaryngol Head Neck Surg ; 167(4): 620-631, 2022 10.
Article in English | MEDLINE | ID: mdl-34813407

ABSTRACT

OBJECTIVE: Consumer wearables, such as the Apple Watch or Fitbit devices, have become increasingly commonplace over the past decade. The application of these devices to health care remains an area of significant yet ill-defined promise. This review aims to identify the potential role of consumer wearables for the monitoring of otolaryngology patients. DATA SOURCES: PubMed. REVIEW METHODS: A PubMed search was conducted to identify the use of consumer wearables for the assessment of clinical outcomes relevant to otolaryngology. Articles were included if they described the use of wearables that were designed for continuous wear and were available for consumer purchase in the United States. Articles meeting inclusion criteria were synthesized into a final narrative review. CONCLUSIONS: In the perioperative setting, consumer wearables could facilitate prehabilitation before major surgery and prediction of clinical outcomes. The use of consumer wearables in the inpatient setting could allow for early recognition of parameters suggestive of poor or declining health. The real-time feedback provided by these devices in the remote setting could be incorporated into behavioral interventions to promote patients' engagement with healthy behaviors. Various concerns surrounding the privacy, ownership, and validity of wearable-derived data must be addressed before their widespread adoption in health care. IMPLICATIONS FOR PRACTICE: Understanding how to leverage the wealth of biometric data collected by consumer wearables to improve health outcomes will become a high-impact area of research and clinical care. Well-designed comparative studies that elucidate the value and clinical applicability of these data are needed.


Subject(s)
Otolaryngology , Wearable Electronic Devices , Fitness Trackers , Humans , Monitoring, Physiologic
12.
Otolaryngol Clin North Am ; 54(4): 823-837, 2021 Aug.
Article in English | MEDLINE | ID: mdl-34215359

ABSTRACT

The term work-life balance may cause physicians to feel inadequate in pursuing a reality in which work and life each have equal importance. Furthermore, the term implies competition between these 2 realms. Instead, work-life integration is a more constructive and realistic term. Achieving harmonious integration requires self-reflection on the current state, goals, and resources and strategies needed to achieve and maintain such a state. Prioritizing aspects of both, and aligning them with individual requirements, while incorporating consistent and intentional investment of time and efforts in both professional and personal arenas is crucial to cultivate and sustain longitudinal well-being.


Subject(s)
Physicians , Work-Life Balance , Humans
13.
J Am Acad Orthop Surg Glob Res Rev ; 5(6): e21.00097-10, 2021 06 02.
Article in English | MEDLINE | ID: mdl-34077397

ABSTRACT

INTRODUCTION: Functional pain assessments are critical in total hip arthroplasty. This pilot study investigated a novel functional pain scale-the Activity-Based Checks of Pain (ABCs)-and its correlations with the 0 to 10 numeric rating scale (NRS) and outpatient milligram of morphine equivalents (MMEs) prescribed and needed in the first 2 weeks after total hip arthroplasty. METHODS: ABCs and NRS were collected at the baseline, inpatient, and 2-week follow-up. Primary outcome metrics were needed for pain medication at the time of pain scale completion, MMEs prescribed at discharge, and MMEs taken. Individual ABC functions and composite score were analyzed using Spearman rho and Mann-Whitney U tests. RESULTS: ABC and NRS scores were greatest preoperatively (n = 39). At each stage, the ABCs correlated with the NRS (ρ = 0.450, P < 0.01; ρ = 0.402, P < 0.05; and ρ = 0.563, P < 0.01). ABC or NRS scores did not correlate with MMEs prescribed. Last in-house NRS correlated with MMEs taken postoperatively (r = 0.571, P < 0.01). Specific ABCs functions-"sitting up" (ρ = 0.418, P < 0.01), "walking in room" (ρ = 0.353, P < 0.05), and "walking outside room" (ρ = 0.362, P < 0.05)-on the day of discharge correlated with MMEs taken. CONCLUSION: ABCs scale correlates with NRS. Neither scale correlated with MMEs prescribed at discharge, suggesting pain is undervalued in analgesic planning. Clinicians should assess pain with functions found to correlate with MMEs taken-"sitting up," "walking in room," and "walking outside room."


Subject(s)
Arthroplasty, Replacement, Hip , Analgesics, Opioid/therapeutic use , Arthroplasty, Replacement, Hip/adverse effects , Humans , Pain Measurement , Pain, Postoperative/diagnosis , Pilot Projects
14.
Otolaryngol Clin North Am ; 54(3): xxi-xxii, 2021 06.
Article in English | MEDLINE | ID: mdl-34024496
15.
J Alzheimers Dis ; 81(2): 641-650, 2021.
Article in English | MEDLINE | ID: mdl-33843686

ABSTRACT

BACKGROUND: Olfactory dysfunction (OD) is an early symptom of Alzheimer's disease (AD). However, olfactory testing is not commonly performed to test OD in the setting of AD. OBJECTIVE: This work investigates objective OD as a non-invasive biomarker for accurately classifying subjects as cognitively unimpaired (CU), mild cognitive impairment (MCI), and AD. METHODS: Patients with MCI (n = 24) and AD (n = 24), and CU (n = 33) controls completed two objective tests of olfaction (Affordable, Rapid, Olfactory Measurement Array -AROMA; Sniffin' Sticks Screening 12 Test -SST12). Demographic and subjective sinonasal and olfaction symptom information was also obtained. Analyses utilized traditional statistics and machine learning to determine olfactory variables, and combinations of variables, of importance for differentiating normal and disease states. RESULTS: Inability to correctly identify a scent after detection was a hallmark of MCI/AD. AROMA was superior to SST12 for differentiating MCI from AD. Performance on the clove scent was significantly different between all three groups. AROMA regression modeling yielded six scents with AUC of the ROC of 0.890 (p < 0.001). Random forest model machine learning algorithms considering AROMA olfactory data successfully predicted MCI versus AD disease state. Considering only AROMA data, machine learning algorithms were 87.5%accurate (95%CI 0.4735, 0.9968). Sensitivity and specificity were 100%and 75%, respectively with ROC of 0.875. When considering AROMA and subject demographic and subjective data, the AUC of the ROC increased to 0.9375. CONCLUSION: OD differentiates CUs from those with MCI and AD and can accurately predict MCI versus AD. Leveraging OD data may meaningfully guide management and research decisions.


Subject(s)
Alzheimer Disease/psychology , Cognitive Dysfunction/psychology , Machine Learning , Olfaction Disorders/physiopathology , Aged , Aged, 80 and over , Biomarkers/analysis , Disease Progression , Humans , Middle Aged , Neuropsychological Tests , Olfaction Disorders/diagnosis , Sensitivity and Specificity
16.
Auris Nasus Larynx ; 48(5): 922-927, 2021 Oct.
Article in English | MEDLINE | ID: mdl-33773853

ABSTRACT

OBJECTIVE: [1] review all studies utilizing SDM in the treatment of chronic rhinosinusitis (CRS) [2], increase awareness of otolaryngologists to shared decision-making, and [3] provide a framework for its incorporation into research and clinical practice. METHODS: systematic search was performed in November 2019 using PubMed/MEDLINE 1947-, CINAHL Complete 1937-, the Cochrane Library, ClinicalTrials.gov, and Web of Science Core Collection (SCI-EXPANDED, SSCI, A&HCI, ESCI) 1900-. All databases were searched from their inception through the date of search. Studies were eligible if they involved a discussion of SDM in the management of CRS. Studies were excluded if they lacked original patient data or outcomes of interest. Identified studies were screened by title/abstract, followed by full-text review. PRISMA guidelines were strictly followed. RESULTS: in total, 416 articles met screening criteria. Six were eligible for full text review. Only one study - an expert panel of the framework for the presurgical treatment of CRS - pertained to SDM. While this study mentions that SDM is a critically important piece to optimize care quality, it does not directly investigate the effects of SDM in CRS. CONCLUSION: this review represents a significant negative study that identifies a clear gap in the rhinology literature. Despite the recognized importance of SDM, there have been no interventional studies in the literature to investigate SDM in CRS. This review highlights the need for exploring the role of SDM in rhinological surgery, outlines an overview of SDM and its impact on patient outcomes, and provides a proposed framework for incorporating SDM in research and clinical practice.


Subject(s)
Decision Making, Shared , Elective Surgical Procedures , Nasal Surgical Procedures , Rhinitis/surgery , Sinusitis/surgery , Chronic Disease , Humans , Patient Reported Outcome Measures
17.
Ann Otol Rhinol Laryngol ; 130(11): 1276-1284, 2021 Nov.
Article in English | MEDLINE | ID: mdl-33759593

ABSTRACT

OBJECTIVE: Scholastic activity through research involvement is a fundamental aspect of a physician's training and may have a significant influence on future academic success. Here, we explore publication rates before, during, and after otolaryngology residency training and whether publication efforts correlate with future academic achievement. METHODS: This cross-sectional analysis included a random sample of 50 otolaryngology residency programs. From these programs, we assembled a list of residents graduating from the years in 2013, 2014, and 2015. Using SCOPUS, PubMed, and Google Scholar, we compiled the publications for each graduate, and data were extracted in an independent, double-blinded fashion. RESULTS: We included 32 otolaryngology residency programs representing 249 residents in this analysis. Graduates published a mean of 1.3 (SD = 2.7) articles before residency, 3.5 (SD = 4.3) during residency, and 5.3 (SD = 9.3) after residency. Residents who pursued a fellowship had more total publications (t247 = -6.1, P < .001) and more first author publications (t247 = -5.4, P < .001) than residents without fellowship training. Graduates who chose a career in academic medicine had a higher number of mean total publications (t247 = -8.2, P < .001) and first author publications (t247 = -7.9, P < .001) than those who were not in academic medicine. There was a high positive correlation between residency program size and publications during residency (r = 0.76). CONCLUSION: Research productivity correlated with a number of characteristics such as future fellowship training, the pursuit of an academic career, and overall h-index in this study.


Subject(s)
Education , Fellowships and Scholarships/statistics & numerical data , Internship and Residency/methods , Otolaryngology/education , Research/organization & administration , Scholarly Communication/statistics & numerical data , Academic Success , Correlation of Data , Cross-Sectional Studies , Education/methods , Education/standards , Efficiency , Female , Humans , Male , United States
18.
Am J Rhinol Allergy ; 35(6): 739-745, 2021 Nov.
Article in English | MEDLINE | ID: mdl-33530693

ABSTRACT

BACKGROUND: Informed consent is an integral part of pre-operative counseling. However, information discussed can be variable. Recent studies have explored the use of multimedia in providing informed consent for rhinologic surgery. OBJECTIVE: To measure impact of an educational video (Video) compared to verbal informed consent (Verbal) on knowledge gained, alleviation of concerns, and efficiency. METHODS: Patients undergoing endoscopic sinus surgery (ESS), septoplasty, or ESS+septoplasty were prospectively enrolled and randomized to receive Video or Verbal consent. The Video group watched an educational video; the Verbal group received standard verbal consent from an Otolaryngology resident per institutional protocol. Both groups had the opportunity to discuss questions or concerns with their attending surgeon. Prior to, and after, consent was signed, both groups completed surveys regarding knowledge of purpose, risks, and benefits of surgery as well as surgical concerns. Decision regret and patient satisfaction were also assessed post-operatively. RESULTS: 77 patients were enrolled (39 Video, 38 Verbal). Demographics were not significantly different between groups. Overall knowledge significantly improved (p < 0.005) and concerns significantly decreased (p < 0.001) following consent in both groups. Improvements in these metrics were equivalent between groups (p < 0.02). Furthermore, resident time to complete consent, patient satisfaction, and decision regret were not significantly different between groups. CONCLUSION: Use of an educational video was equivalent to standard verbal informed consent for patients undergoing rhinologic surgery. Otolaryngologists can consider developing procedure-specific videos to allow allocation of time to other tasks, standardized education of patients, and streamlining of the informed consent process.


Subject(s)
Informed Consent , Rhinoplasty , Endoscopy , Humans , Patient Satisfaction , Surveys and Questionnaires
20.
Am J Rhinol Allergy ; 35(3): 323-333, 2021 May.
Article in English | MEDLINE | ID: mdl-32915650

ABSTRACT

BACKGROUND: Post-viral olfactory dysfunction is a common cause of both short- and long-term smell alteration. The coronavirus pandemic further highlights the importance of post-viral olfactory dysfunction. Currently, a comprehensive review of the neural mechanism underpinning post-viral olfactory dysfunction is lacking. OBJECTIVES: To synthesize the existing primary literature related to olfactory dysfunction secondary to viral infection, detail the underlying pathophysiological mechanisms, highlight relevance for the current COVID-19 pandemic, and identify high impact areas of future research. METHODS: PubMed and Embase were searched to identify studies reporting primary scientific data on post-viral olfactory dysfunction. Results were supplemented by manual searches. Studies were categorized into animal and human studies for final analysis and summary. RESULTS: A total of 38 animal studies and 7 human studies met inclusion criteria and were analyzed. There was significant variability in study design, experimental model, and outcome measured. Viral effects on the olfactory system varies significantly based on viral substrain but generally include damage or alteration in components of the olfactory epithelium and/or the olfactory bulb. CONCLUSIONS: The mechanism of post-viral olfactory dysfunction is highly complex, virus-dependent, and involves a combination of insults at multiple levels of the olfactory pathway. This will have important implications for future diagnostic and therapeutic developments for patients infected with COVID-19.


Subject(s)
COVID-19/complications , Olfaction Disorders/physiopathology , Animals , COVID-19/epidemiology , COVID-19/pathology , COVID-19/physiopathology , Humans , Olfaction Disorders/epidemiology , Olfaction Disorders/pathology , Olfactory Bulb/pathology , Olfactory Mucosa/pathology , Olfactory Pathways/pathology , SARS-CoV-2/genetics , SARS-CoV-2/pathogenicity , Species Specificity , Post-Acute COVID-19 Syndrome
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