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Suica Z, Behrendt F, Ziller C, Gäumann S, Schädler S, Hilfiker R, Parmar K, Gerth HU, Bonati LH, Schuster-Amft C. Comparative effectiveness of non- pharmacological treatments in patients with persistent postural-perceptual dizziness: a systematic review and effect sizes analyses. Front Neurol 2024; 15:1426566. [PMID: 39070052 PMCID: PMC11272556 DOI: 10.3389/fneur.2024.1426566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 07/01/2024] [Indexed: 07/30/2024] Open
Abstract
Introduction The patho-psychological mechanisms of persistent postural-perceptual dizziness (PPPD) appear to be very complex, and a multimodal, multidisciplinary approach is suggested for treating patients with PPPD. The aim of this review was to provide a comprehensive overview of non-pharmacological treatments and their comparative effectiveness in patients with PPPD. Methods Scopus, Web of Science, PsycINFO, Medline, Embase, CINAHL, Cochrane Library and ClinicalTrials.gov were searched in April 2022 with a search update in August 2023. Only randomized controlled trials (RCTs) were included. There was no restrictions regarding publication date. Two reviewers independently identified eligible trials, extracted data, double-checked all extracted information from the included articles and assessed the risk of bias using the Cochrane risk of bias tool. A qualitative synthesis was performed, considering methodological heterogeneity between trials. Finally, an effect size analysis was performed for each treatment comparison. The standardized mean differences (SMD) and their corresponding 95% confidence intervals (95%CI) were calculated for each trial using Review Manager 5.4. Results Thirteen RCTs (618 patients with moderate or mild dizziness) out of 1,362 references describing seven different non-pharmacological comparisons were selected. Nine trials included patients with PPPD, and four trials included patients with functional dizziness. The trials used different interventions that were classified as: (1) psychotherapeutic interventions (cognitive behavioral therapy, patient education), (2) physiotherapeutic interventions/training (vestibular rehabilitation, optokinetic stimulation), (3) stimulation procedures (vagus nerve stimulation, transcranial direct current stimulation) and (4) device application (visual desensitization using personalized glasses). However, most of the trials investigated the effects of single interventions, rather than multimodal interdisciplinary treatment of patients with PPPD. The SMD for dizziness handicap and severity was between 0.04 and 0.52 in most trials. In one trial using visual desensitization, the SMD was 1.09 (strong effect on the severity of dizziness) and 1.05 (strong effect on dizziness handicap). Discussion Several individual interventions have shown benefits in the treatment of patients with PPPD with small to moderate effects. However, the multimodal treatment or a combination of vestibular rehabilitation with visual desensitization, cognitive behavioral therapy including patient education, and medication support should be further investigated. Future trials should include a large sample size with severe dizziness, and provide a longer follow-up period. Clinical trial registration PROSPERO CRD42022320344.
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Affiliation(s)
- Zorica Suica
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
| | - Frank Behrendt
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- School of Engineering and Computer Science, Bern University of Applied Sciences, Burgdorf, Switzerland
| | - Carina Ziller
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
| | - Szabina Gäumann
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
| | | | | | - Katrin Parmar
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Translational Imaging in Neurology (ThINk) Basel, Departments of Head, Spine and Neuromedicine and Biomedical Engineering, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Hans Ulrich Gerth
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Department of Medicine, University Hospital Münster, Münster, Germany
| | - Leo H. Bonati
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Stroke Center and Department of Neurology, University Hospital Basel, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Corina Schuster-Amft
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- School of Engineering and Computer Science, Bern University of Applied Sciences, Burgdorf, Switzerland
- Department for Sport, Exercise, and Health, University of Basel, Basel, Switzerland
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Wu D, Liu B, Wu Y, Wang Y, Sun J, Yang J, Duan J, Liu G, Cao K, Zhang Y, Rong P. Meniere Disease treated with transcutaneous auricular vagus nerve stimulation combined with betahistine Mesylate: A randomized controlled trial. Brain Stimul 2023; 16:1576-1584. [PMID: 37838094 DOI: 10.1016/j.brs.2023.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 09/05/2023] [Accepted: 10/03/2023] [Indexed: 10/16/2023] Open
Abstract
BACKGROUND Meniere Disease is a clinical condition defined by hearing loss, tinnitus, and aural fullness symptoms, there are currently no any medications approved for its treatment. OBJECTIVE To determine whether taVNS as an adjunctive therapy could relieve symptoms and improve the quality of life in patients with Meniere disease. METHODS In this Single-center, single blind, randomized trial, participants were assigned to transcutaneous auricular vagus nerve stimulation (taVNS) group and sham taVNS group. The primary outcome measures comprised Tinnitus Handicap Inventory, Dizziness Handicap Inventory, Pure Tone Auditory, Visual analogue scale of aural fullness. Secondary outcome measures comprised the 36-Item Short Form Health Survey, video head impulse test, and the caloric test. RESULTS After 12 weeks, the THI (-11.00, 95%CI, -14.87 to -7.13; P < 0.001), DHI (-47.26, 95%CI, -50.23 to -44.29; P < 0.001), VAS of aural fullness (-2.22, 95%CI, -2.95 to -1.49; P<0.01), and Pure Tone Thresholds (-7.07, 95%CI, -9.07 to -5.06; P<0.001) were significantly differed between the two groups. In addition, SF36(14.72, 95%CI, 11.06 to 18.39; P < 0.001), vHIT (RD, 0.26, 95 % CI, -0.44 to -0.08, RR, 0.43, 95 % CI, 0.22 to 0.83, P < 0.01), and the caloric test (RD, -0.24, 95 % CI, -0.43 to -0.04, RR, 0.66, 95 % CI, 0.44 to 0.95, P = 0.02) have significant difference between two group, respectively. CONCLUSIONS These findings suggest that taVNS combined with Betahistine Mesylate relieve symptoms and improve the quality of life for patients with Meniere Disease. taVNS can be considered an adjunctive therapy in treatment of Meniere Disease. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT05328895.
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Affiliation(s)
- Dong Wu
- Department of Traditional Chinese Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China.
| | - Bo Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
| | - Yunqing Wu
- Department of Neurology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yu Wang
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jingyi Sun
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Jun Yang
- Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
| | - Jinping Duan
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Gang Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Kai Cao
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yi Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
| | - Peijing Rong
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China.
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Webster KE, Kamo T, Smith L, Harrington-Benton NA, Judd O, Kaski D, Maarsingh OR, MacKeith S, Ray J, Van Vugt VA, Burton MJ. Non-pharmacological interventions for persistent postural-perceptual dizziness (PPPD). Cochrane Database Syst Rev 2023; 3:CD015333. [PMID: 36912784 PMCID: PMC10011873 DOI: 10.1002/14651858.cd015333.pub2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
BACKGROUND Persistent postural-perceptual dizziness (PPPD) is a chronic balance disorder, which is characterised by subjective unsteadiness or dizziness that is worse on standing and with visual stimulation. The condition was only recently defined and therefore the prevalence is currently unknown. However, it is likely to include a considerable number of people with chronic balance problems. The symptoms can be debilitating and have a profound impact on quality of life. At present, little is known about the optimal way to treat this condition. A variety of medications may be used, as well as other treatments, such as vestibular rehabilitation. OBJECTIVES: To assess the benefits and harms of non-pharmacological interventions for persistent postural-perceptual dizziness (PPPD). SEARCH METHODS: The Cochrane ENT Information Specialist searched the Cochrane ENT Register; Central Register of Controlled Trials (CENTRAL); Ovid MEDLINE; Ovid Embase; Web of Science; ClinicalTrials.gov; ICTRP and additional sources for published and unpublished trials. The date of the search was 21 November 2022. SELECTION CRITERIA We included randomised controlled trials (RCTs) and quasi-RCTs in adults with PPPD, which compared any non-pharmacological intervention with either placebo or no treatment. We excluded studies that did not use the Bárány Society criteria to diagnose PPPD, and studies that followed up participants for less than three months. DATA COLLECTION AND ANALYSIS: We used standard Cochrane methods. Our primary outcomes were: 1) improvement in vestibular symptoms (assessed as a dichotomous outcome - improved or not improved), 2) change in vestibular symptoms (assessed as a continuous outcome, with a score on a numerical scale) and 3) serious adverse events. Our secondary outcomes were: 4) disease-specific health-related quality of life, 5) generic health-related quality of life and 6) other adverse effects. We considered outcomes reported at three time points: 3 to < 6 months, 6 to ≤ 12 months and > 12 months. We planned to use GRADE to assess the certainty of evidence for each outcome. MAIN RESULTS: Few randomised controlled trials have been conducted to assess the efficacy of different treatments for PPPD compared to no treatment (or placebo). Of the few studies we identified, only one followed up participants for at least three months, therefore most were not eligible for inclusion in this review. We identified one study from South Korea that compared the use of transcranial direct current stimulation to a sham procedure in 24 people with PPPD. This is a technique that involves electrical stimulation of the brain with a weak current, through electrodes that are placed onto the scalp. This study provided some information on the occurrence of adverse effects, and also on disease-specific quality of life at three months of follow-up. The other outcomes of interest in this review were not assessed. As this is a single, small study we cannot draw any meaningful conclusions from the numeric results. AUTHORS' CONCLUSIONS: Further work is necessary to determine whether any non-pharmacological interventions may be effective for the treatment of PPPD and to assess whether they are associated with any potential harms. As this is a chronic disease, future trials should follow up participants for a sufficient period of time to assess whether there is a persisting impact on the severity of the disease, rather than only observing short-term effects.
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Affiliation(s)
- Katie E Webster
- Cochrane ENT, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Tomohiko Kamo
- Department of Physical Therapy, Faculty of Rehabilitation, Gunma Paz University, Gunma, Japan
| | - Laura Smith
- School of Psychology, University of Kent, Canterbury, UK
| | | | - Owen Judd
- ENT Department, University Hospitals of Derby and Burton NHS Foundation Trust, Derby, UK
| | - Diego Kaski
- National Hospital for Neurology and Neurosurgery, London, UK
| | - Otto R Maarsingh
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of General Practice, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Samuel MacKeith
- ENT Department, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | - Vincent A Van Vugt
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of General Practice, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
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Das S, Annam CS, Bakshi SS, Seepana R. Persistent positional perceptual dizziness in clinical practice: a scoping review. Neurol Sci 2023; 44:129-135. [PMID: 35994134 DOI: 10.1007/s10072-022-06353-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 08/15/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Dizziness is an important symptom presenting in routine practice and the life time prevalence ranges from 17 to 30%. Persistent positional perceptual dizziness (PPPD) is a common cause of chronic dizziness and has often been labeled as psychogenic dizziness in the past. DISCUSSION PPPD is diagnosed based on clinical criteria laid down by the Barany society. The vestibular function tests and imaging of the brain and the inner ear are often normal. Most of the patients have an underlying anxiety trait and most cases of PPPD arise following an attack of acute vertigo like Meniere's disease and vestibular neuritis. It is important to differentiate the condition from bilateral vestibulopathy. There is no role of vestibular sedative in the treatment of such condition. Vestibular rehabilitation therapy (VRT), cognitive behavioral therapy (CBT), and selective serotonin reuptake inhibitors (SSRI) like sertraline have shown benefits. However, long-term outcome is not known. CONCLUSION PPPD is a relatively new entity in the ever-expanding field of neurotology that requires a multimodality approach for effective management. The otologists and general physicians must identify the condition so that favorable outcome can be achieved. The long-term effects of treatment with CBT and VRT are not known. It is important to formulate standard guidelines for treatment. Further research is necessary to identify the role of endogenous biomarkers in the outcome of treatment.
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Affiliation(s)
- Soumyajit Das
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522503, India.
| | - Chandra Sekhar Annam
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522023, India
| | - Satvinder Singh Bakshi
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522023, India
| | - Ramesh Seepana
- Department of ENT, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, 522503, India
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Tripathi S, Tripathi S, Shantha N, Goyal S. Beyond Vertigo- Perceptual Postural Phobic Dizziness (PPPD): Our experience. Indian J Otolaryngol Head Neck Surg 2022; 74:4455-4459. [PMID: 36742640 PMCID: PMC9895483 DOI: 10.1007/s12070-021-02984-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 11/08/2021] [Indexed: 02/07/2023] Open
Abstract
Notwithstanding current understanding of vertigo, there are various clinical scenarios which are intriguing for clinicians, where patients have been too symptomatic but the presentation does not fit into any diagnosis. We stumbled upon a new entity during literature search known as Persistent Postural Perceptual Dizziness (PPPD). It fills the lacuna where we are often left wanting for diagnosis in the existing pool of knowledge. This case series has been prepared keeping in view the lack of data regarding PPPD in Indian population. For better understanding we present the illustration of our patients in this case series. We presented the details of three patients who were diagnosed as PPPD and managed effectively and followed up for one year. The nomenclature portrays the core concept of dizziness. The diagnostic criteria clearly define PPPD. It should not be used as escape or exclusion diagnosis. Our case series highlights various presentation of, not so uncommon, PPPD in Indian population. The case series has been brought out to address the deficiency of knowledge in dealing with intriguing vertigo. Careful thorough history is important to reach a diagnosis and avoids unwarranted vestibular sedatives. It highlights that proper counselling and vestibular rehabilitation can help the patients overcome their chronic disability.
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Affiliation(s)
| | | | - N. Shantha
- Dept of ENT, Military Hospital, Ferozpur, Punjab India
| | - Sunil Goyal
- Dept of ENT, Command Hospital, Kolkata, West Bengal India
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Yamaguchi T, Miwa T, Tamura K, Inoue F, Umezawa N, Maetani T, Hara M, Kanemaru SI. Temporal virtual reality-guided, dual-task, trunk balance training in a sitting position improves persistent postural-perceptual dizziness: proof of concept. J Neuroeng Rehabil 2022; 19:92. [PMID: 35987778 PMCID: PMC9392908 DOI: 10.1186/s12984-022-01068-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 08/12/2022] [Indexed: 11/30/2022] Open
Abstract
Background Persistent postural-perceptual dizziness (PPPD) is a newly defined disorder characterized by functional dizziness. Due to its recent discovery, definitive treatment for PPPD has not been established; therefore, this study aimed to assess the effectiveness of virtual reality (VR)-guided, dual-task, trunk balance training for the management of PPPD using the mediVR KAGURA system. Methods We analyzed data of patients who presented with PPPD from January 1, 2021, to February 28, 2021. The VR group included patients who underwent mediVR KAGURA-guided training for 100 tasks (10 min). Patients with PPPD who received standard treatment and rehabilitation were assigned to the control group. Equilibrium tests were performed at baseline and immediately after mediVR KAGURA-guided training to examine its effectiveness in improving static and dynamic balance. Additionally, clinical questionnaires related to balance disorders were administered at baseline and 1 week after mediVR KAGURA-guided training to examine its effects on balance-related symptoms. The primary outcome was improvements in static and dynamic balance and Niigata PPPD Questionnaire (NPQ) scores. Results VR-guided training using mediVR KAGURA improved objective outcomes, including static and dynamic postural stability, after a single 10-min training session. Additionally, mediVR KAGURA-guided training improved scores on the Hospital Anxiety and Depression Scale and NPQ 1 week after the 10-min training session. Conclusion VR-guided training using mediVR KAGURA represents a viable method for managing balancing ability, anxiety, and symptoms in patients with PPPD. Such training provides a safe and cost-effective solution for PPPD management. Further studies are required to evaluate the clinical efficacy of this strategy. Trial registration: Institutional Ethics Committee of Kitano Hospital, approval number: 1911003. Registered 18 December 2019, https://kitano.bvits.com/rinri/publish_document.aspx?ID=426. Supplementary Information The online version contains supplementary material available at 10.1186/s12984-022-01068-6.
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Miwa T, Kanemaru SI. Effects of Kampo medicine hangebyakujutsutemmato on persistent postural-perceptual dizziness: A retrospective pilot study. World J Clin Cases 2022; 10:6811-6824. [PMID: 36051127 PMCID: PMC9297410 DOI: 10.12998/wjcc.v10.i20.6811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/17/2022] [Accepted: 04/24/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Persistent postural-perceptual dizziness (PPPD) is a functional disorder, typically preceded by acute vestibular disorders. It is characterized by a shift in processing spatial orientation information, to favor visual over vestibular and somatosensory inputs, and a failure of higher cortical mechanisms. To date, no therapies for PPPD have been approved. Kampo medicine hangebyakujutsutemmato (HBT) has been reported to alleviate disturbances of equilibrium. We hypothesized that HBT would be a beneficial treatment for PPPD.
AIM To examine the efficacy of HBT for the treatment of PPPD.
METHODS Patients with PPPD were enrolled and divided into two groups: The HBT group (n = 24) and the non-HBT group (n = 14). The participants completed questionnaire surveys [Niigata PPPD questionnaire (NPQ), dizziness handicap inventory, hospital anxiety and depression scale (HADS), orthostatic dysregulation questionnaire, pittsburg sleep quality index (PSQI), and motion sickness scores] before and after HBT treatment. Additionally, to identify HBT responders, multivariate regression analysis was performed using the results of the questionnaire surveys and equilibrium tests; including stabilometry, and caloric, vestibular evoked myogenic response, and head-up tilt tests.
RESULTS Thirty-eight outpatients were included in this study, of which 14 patients (3 men, 11 women; mean age, 63.5 ± 15.9 years) received treatment without HBT, and 24 (1 man, 23 women; mean age, 58.2 ± 18.7 years) received combination treatment with HBT. Following HBT treatment, NPQ scores decreased significantly (baseline 40.1 ± 10.0 vs 2 mo 24.6 ± 17.7, P < 0.001). No statistically significant changes were observed in the NPQ scores in the non-HBT group (baseline 38.6 ± 12.2 vs 2 mo 39.4 ± 14.4, P = 0.92). Multivariable regression analysis revealed that the results of stabilometry (P = 0.02) and the caloric (P = 0.03), and head-up tilt tests (P < 0.001), HADS (P = 0.003), and PSQI (P = 0.01) were associated with HBT responsiveness in PPPD patients.
CONCLUSION HBT may be an effective adjunct therapy for PPPD. Patients with autonomic dysfunction, unstable balance, semicircular canal paresis, anxiety, and poor sleep quality may be high responders to HBT.
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Affiliation(s)
- Toru Miwa
- Department of Otolaryngology-Head and Neck Surgery, Osaka Metropolitan University, Osaka 5458585, Japan
- Department of Otolaryngology-Head and Neck Surgery, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka 5308480, Japan
- Department of Otolaryngology-Head and Neck Surgery, Kyoto University, Kyoto 7507501, Japan
| | - Shin-ichi Kanemaru
- Department of Otolaryngology-Head and Neck Surgery, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka 5308480, Japan
- Department of Otolaryngology-Head and Neck Surgery, Kyoto University, Kyoto 7507501, Japan
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Li F, Feng Y, Liu H, Kong D, Hsueh CY, Shi X, Wu Q, Li W, Wang J, Zhang Y, Dai C. Gut Microbiome and Metabolome Changes in Mice With Acute Vestibular Deficit. Front Cell Infect Microbiol 2022; 12:821780. [PMID: 35444956 PMCID: PMC9013912 DOI: 10.3389/fcimb.2022.821780] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/18/2022] [Indexed: 11/13/2022] Open
Abstract
Vestibular deficit is a very common disorder in clinical practice and is characterized by vertigo, spontaneous nystagmus, and autonomic nervous symptoms, including nausea, vomiting, and sweating. In addition, the comorbidity of vestibular deficit and anxiety has long been an integral component of the medical literature. Previous studies have suggested that the mechanisms underlying this comorbidity involved overlap of vestibular and cerebellar networks. Emerging evidence has shown that the microbiota–gut–brain axis plays a key role in the regulation of affective disorders. Thus, we hypothesized that the gut microbiota may be involved in the comorbidity of vestibular deficit and anxiety. To verify this, we constructed a unilateral labyrinthectomy mouse model to simulate vestibular deficit. Then, 16S rRNA gene sequencing and liquid chromatography–mass spectrometry (LC-MS) were used to analyze the microbiome and metabolome of the cecal samples collected from mice in the unilateral labyrinthectomy, sham surgery, and control groups. Notably, unilateral labyrinthectomy shaped the composition of the mouse gut microbiome, resulting in increased abundance of Lachnospiraceae NK4A136 group, Odoribacter and Roseburia and decreased abundance of Prevotella and Parasutterella at the genus level. Tax4Fun functional prediction indicated a decrease in tryptophan metabolism in mice in the unilateral labyrinthectomy group. Moreover, functional correlation of changes in gut microbes and metabolites between different groups showed that the oleamide level was negatively correlated with Odoribacter abundance (r = -0.89, p = 0.0002). The butyric acid level was positively correlated with Parasutterella abundance (r = 0.85, p = 0.0010). The propanoate level was negatively correlated with Prevotella abundance (r = -0.81, p = 0.0020). The 20-HETE level was positively correlated with Parasutterella abundance (r = 0.84, p = 0.0013). The altered microbes and metabolites were closely related to the pathogenesis of affective disorders. Our results not only offer novel insights into the vestibular deficit comorbid with anxiety but also build an important basis for future research on this etiology.
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Affiliation(s)
- Feitian Li
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Yisi Feng
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Hongyan Liu
- Department of Otolaryngology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Dedi Kong
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Chi-Yao Hsueh
- Department of Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Xunbei Shi
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Qianru Wu
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Wei Li
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Jing Wang
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Yibo Zhang
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
| | - Chunfu Dai
- Department of Otology and Skull Base Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- Key Laboratory of Hearing Medicine, Ministry of Health, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China
- *Correspondence: Chunfu Dai,
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Tramontano M, Princi AA, De Angelis S, Indovina I, Manzari L. Vestibular rehabilitation in patients with persistent postural-perceptual dizziness: a scoping review. HEARING, BALANCE AND COMMUNICATION 2021. [DOI: 10.1080/21695717.2021.1975986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Marco Tramontano
- Fondazione Santa Lucia IRCCS, Rome, Italy
- Department of Movement, Human and Health Sciences, Interuniversity Centre of Bioengineering of the Human Neuromusculoskeletal System, University of Rome ‘Foro Italico’, Roma, Italy
| | | | | | - Iole Indovina
- Fondazione Santa Lucia IRCCS, Rome, Italy
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
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Cornforth E, Schramm K. Physical therapist's beliefs, practice patterns and barriers to the incorporation of mindfulness meditation into management of individuals with chronic dizziness. Complement Ther Clin Pract 2021; 43:101387. [PMID: 33892386 DOI: 10.1016/j.ctcp.2021.101387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 03/19/2021] [Accepted: 04/02/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE The purpose of this study was to assess physical therapist's beliefs, practice patterns, and barriers of incorporation of mindfulness meditation into the management of individuals with chronic dizziness. METHODS An electronic survey was sent to physical therapists with experience treating individuals with dizziness and vestibular disorders. Descriptive statistics and chi-square analysis were conducted. RESULTS The majority of respondents agree that anxiety limits functional and participation outcomes with individuals with chronic dizziness and adoption of a mindfulness meditation practice could be helpful to address this. However, a much smaller percentage of respondents reported currently using these techniques a majority of time during their clinical practice. CONCLUSION Barriers exist that prevent the widespread implementation of meditation and mindfulness in physical therapy practice. Potential limiting factors highlight that further research is needed to explore these barriers and evaluate the outcomes of patients with chronic dizziness when meditation is applied in practice.
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Affiliation(s)
- Elizabeth Cornforth
- MGH Institute of Health Professions, Boston, MA, USA; Spaulding Rehabilitation Hospital, Boston, MA, USA.
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Cracchiolo M, Ottaviani MM, Panarese A, Strauss I, Vallone F, Mazzoni A, Micera S. Bioelectronic medicine for the autonomic nervous system: clinical applications and perspectives. J Neural Eng 2021; 18. [PMID: 33592597 DOI: 10.1088/1741-2552/abe6b9] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 02/16/2021] [Indexed: 12/11/2022]
Abstract
Bioelectronic medicine (BM) is an emerging new approach for developing novel neuromodulation therapies for pathologies that have been previously treated with pharmacological approaches. In this review, we will focus on the neuromodulation of autonomic nervous system (ANS) activity with implantable devices, a field of BM that has already demonstrated the ability to treat a variety of conditions, from inflammation to metabolic and cognitive disorders. Recent discoveries about immune responses to ANS stimulation are the laying foundation for a new field holding great potential for medical advancement and therapies and involving an increasing number of research groups around the world, with funding from international public agencies and private investors. Here, we summarize the current achievements and future perspectives for clinical applications of neural decoding and stimulation of the ANS. First, we present the main clinical results achieved so far by different BM approaches and discuss the challenges encountered in fully exploiting the potential of neuromodulatory strategies. Then, we present current preclinical studies aimed at overcoming the present limitations by looking for optimal anatomical targets, developing novel neural interface technology, and conceiving more efficient signal processing strategies. Finally, we explore the prospects for translating these advancements into clinical practice.
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Affiliation(s)
- Marina Cracchiolo
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Matteo Maria Ottaviani
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Alessandro Panarese
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Ivo Strauss
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Fabio Vallone
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Alberto Mazzoni
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Silvestro Micera
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy.,Bertarelli Foundation Chair in Translational NeuroEngineering, Centre for Neuroprosthetics and Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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12
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Axer H, Finn S, Wassermann A, Guntinas-Lichius O, Klingner CM, Witte OW. Multimodal treatment of persistent postural-perceptual dizziness. Brain Behav 2020; 10:e01864. [PMID: 32989916 PMCID: PMC7749543 DOI: 10.1002/brb3.1864] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 09/12/2020] [Accepted: 09/13/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Persistent postural-perceptual dizziness (PPPD) is a chronic disorder with fluctuating symptoms of dizziness, unsteadiness, or vertigo for at least three months. Its pathophysiological mechanisms give theoretical support for the use of multimodal treatment. However, there are different therapeutic programs and principles available, and their clinical effectiveness remains elusive. METHODS A database of patients who participated in a day care multimodal treatment program was analyzed regarding the therapeutic effects on PPPD. Vertigo Severity Scale (VSS) and Hospital Anxiety and Depression Scale (HADS) were assessed before and 6 months after therapy. RESULTS Of a total of 657 patients treated with a tertiary care multimodal treatment program, 46.4% met the criteria for PPPD. PPPD patients were younger than patients with somatic diagnoses and complained more distress due to dizziness. 63.6% completed the follow-up questionnaire. All patients showed significant changes in VSS and HADS anxiety, but the PPPD patients generally showed a tendency to improve more than the patients with somatic diagnoses. The change in the autonomic-anxiety subscore of VSS only reached statistical significance when comparing PPPD with somatic diagnoses (p = .002). CONCLUSIONS Therapeutic principles comprise cognitive-behavioral therapy, vestibular rehabilitation exercises, and serotonergic medication. However, large-scale, randomized, controlled trials are still missing. Follow-up observations after multimodal interdisciplinary therapy reveal an improvement in symptoms in most patients with chronic dizziness. The study was not designed to detect diagnosis-specific effects, but patients with PPPD and patients with other vestibular disorders benefit from multimodal therapies.
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Affiliation(s)
- Hubertus Axer
- Center for Vertigo and Dizziness, Department of Neurology, Jena University Hospital, Jena, Germany
| | - Sigrid Finn
- Center for Vertigo and Dizziness, Department of Neurology, Jena University Hospital, Jena, Germany
| | - Alexander Wassermann
- Center for Vertigo and Dizziness, Department of Neurology, Jena University Hospital, Jena, Germany
| | | | - Carsten M Klingner
- Center for Vertigo and Dizziness, Department of Neurology, Jena University Hospital, Jena, Germany.,Biomagnetic Center, Jena University Hospital, Jena, Germany
| | - Otto W Witte
- Center for Vertigo and Dizziness, Department of Neurology, Jena University Hospital, Jena, Germany
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13
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Sun L, Xiang K. A review on the alterations in the brain of persistent postural-perceptual dizziness patients and non-pharmacological interventions for its management. Rev Neurosci 2020; 31:675-680. [PMID: 32286251 DOI: 10.1515/revneuro-2019-0109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/01/2020] [Indexed: 12/17/2022]
Abstract
Persistent postural perceptual dizziness (PPPD) is a relatively newer term, and this term is included in the International Classification of Diseases in its 11th revision. The typical features of PPPD include the presence of persistent dizziness, non-spinning vertigo, and unsteadiness, and these symptoms are exacerbated during upright posture, movement, or visual stimuli. Moreover, the structural changes have also been identified in the brains of PPPD patients, particularly in visual, vestibular, and limbic areas. These include a decrease in the volume and gyration of gray matter, a decrease in the blood flow to the cortex region, and alterations in the structural and functional connectivity, particularly in the visual-vestibular networks. Moreover, the impairment in sensory processing is restricted not only to the vestibular and visual regions; instead, there is a generalized impairment in the sensory processing, and thus, there is a multisensory dimension of sensory impairment. Selective serotonin uptake inhibitors and serotonin-norepinephrine reuptake inhibitors are the mainstay drugs for the management of PPPD patients. However, a significant proportion of PPPD patients do not show improvement in response to standard drug therapy. The employment of alternative and complementary treatment strategies, including vestibular rehabilitation therapy, cognitive behavioral therapy, and non-invasive vagal nerve stimulation, is effective in the management of PPPD patients. The present review discusses the alterations in the brains of PPPD patients along with the possible non-pharmacological treatment options in these types of patients.
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Affiliation(s)
- Li Sun
- Dizziness Clinic, Jilin Provincial Academy of Chinese Medicine Sciences, No. 20 Gongnong Street, Changchun 130000, Jilin, China
| | - Ke Xiang
- Dizziness Clinic, Jilin Provincial Academy of Chinese Medicine Sciences, No. 20 Gongnong Street, Changchun 130000, Jilin, China
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14
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Habs M, Strobl R, Grill E, Dieterich M, Becker-Bense S. Primary or secondary chronic functional dizziness: does it make a difference? A DizzyReg study in 356 patients. J Neurol 2020; 267:212-222. [PMID: 32852579 PMCID: PMC7718176 DOI: 10.1007/s00415-020-10150-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/03/2020] [Accepted: 08/07/2020] [Indexed: 12/20/2022]
Abstract
In 2017, the term “persistent postural-perceptual dizziness” (PPPD) was coined by the Bárány Society, which provided explicit criteria for diagnosis of functional vertigo and dizziness disorders. PPPD can originate secondarily after an organic disorder (s-PPPD) or primarily on its own, in the absence of somatic triggers (p-PPPD). The aim of this database-driven study in 356 patients from a tertiary vertigo center was to describe typical demographic and clinical features in p-PPPD and s-PPPD patients. Patients underwent detailed vestibular testing with neurological and neuro-orthoptic examinations, video-oculography during water caloric stimulation, video head-impulse test, assessment of the subjective visual vertical, and static posturography. All patients answered standardized questionnaires (Dizziness Handicap Inventory, DHI; Vestibular Activities and Participation, VAP; and Euro-Qol-5D-3L). One hundred and ninety-five patients (55%) were categorized as p-PPPD and 162 (45%) as s-PPPD, with female gender slightly predominating (♀:♂ = 56%:44%), particularly in the s-PPPD subgroup (64%). The most common somatic triggers for s-PPPD were benign paroxysmal positional vertigo (27%), and vestibular migraine (24%). Overall, p-PPPD patients were younger than s-PPPD patients (44 vs. 48 years) and showed a bimodal age distribution with an additional early peak in young adults (about 30 years of age) beside a common peak at the age of 50–55. The most sensitive diagnostic tool was posturography, revealing a phobic sway pattern in 50% of cases. s-PPPD patients showed higher handicap and functional impairment in DHI (47 vs. 42) and VAP (9.7 vs. 8.9). There was no difference between both groups in EQ-5D-3L. In p-PPPD, anxiety (20% vs. 10%) and depressive disorders (25% vs. 9%) were more frequent. This retrospective study in a large cohort showed relevant differences between p- and s-PPPD patients in terms of demographic and clinical features, thereby underlining the need for careful syndrome subdivision for further prospective studies.
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Affiliation(s)
- Maximilian Habs
- German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität München, Munich, Germany.
- Department of Neurology, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany.
| | - Ralf Strobl
- German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Eva Grill
- German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marianne Dieterich
- German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität München, Munich, Germany
- Department of Neurology, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Sandra Becker-Bense
- German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität München, Munich, Germany
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Bretherton B, Atkinson L, Murray A, Clancy J, Deuchars S, Deuchars J. Effects of transcutaneous vagus nerve stimulation in individuals aged 55 years or above: potential benefits of daily stimulation. Aging (Albany NY) 2020; 11:4836-4857. [PMID: 31358702 PMCID: PMC6682519 DOI: 10.18632/aging.102074] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 06/28/2019] [Indexed: 12/23/2022]
Abstract
Ageing is associated with attenuated autonomic function. Transcutaneous vagal nerve stimulation (tVNS) improved autonomic function in healthy young participants. We therefore investigated the effects of a single session of tVNS (studies 1 and 2) and tVNS administered daily for two weeks (study 3) in volunteers aged ≥ 55 years. tVNS was performed using modified surface electrodes on the tragus and connected to a transcutaneous electrical nerve stimulation (TENS) machine. Study 1: participants (n=14) received a single session of tVNS and sham. Study 2: all participants (n=51) underwent a single session of tVNS. Study 3: participants (n=29) received daily tVNS for two weeks. Heart rate variability and baroreflex sensitivity were derived. Quality of life (QoL), mood and sleep were assessed in study 3. tVNS promoted increases in measures of vagal tone and was associated with greater increases in baroreflex sensitivity than sham. Two weeks of daily tVNS improved measures of autonomic function, and some aspects of QoL, mood and sleep. Importantly, findings showed that improvements in measures of autonomic balance were more pronounced in participants with greater baseline sympathetic prevalence. This suggests it may be possible to identify individuals who are likely to encounter significant benefits from tVNS.
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Affiliation(s)
- Beatrice Bretherton
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Lucy Atkinson
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Aaron Murray
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Jennifer Clancy
- School of Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Susan Deuchars
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Jim Deuchars
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
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Hou AY, Chen AY, Yuan H, Silberstein SD. Peripheral neuromodulation for the treatment of migraine and headache: recent advances. ACTA ACUST UNITED AC 2019. [DOI: 10.2217/bem-2019-0024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Noninvasive neuromodulation is a rapidly developing field that offers an attractive nonpharmacologic treatment option for headache patients. Devices that stimulate peripheral nerves (e.g., vagus nerve, trigeminal sensory nerve, somatic sensory nerve) or brain parenchyma (e.g., occipital cortex) have been developed for this purpose, with promising results in clinical trials. There are currently four US FDA-cleared devices for the treatment of migraine and/or cluster headache: Cefaly®, a trigeminal nerve stimulator; gammaCore™, a vagus nerve stimulator; sTMS mini™, a transcranial magnetic stimulator and Nerivio™, a remote electrical neurostimulator. This narrative review will provide an overview of FDA-cleared neuromodulatory devices, including their proposed mechanisms of action as well as device safety and efficacy as demonstrated in clinical trials.
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Affiliation(s)
- Angela Y Hou
- Jefferson Headache Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Anna Y Chen
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Hsiangkuo Yuan
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Stephen D Silberstein
- Jefferson Headache Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Beh SC, Friedman DI. Acute vestibular migraine treatment with noninvasive vagus nerve stimulation. Neurology 2019; 93:e1715-e1719. [DOI: 10.1212/wnl.0000000000008388] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/29/2019] [Indexed: 11/15/2022] Open
Abstract
ObjectiveTo report on the benefits of noninvasive vagus nerve stimulation (nVNS) on acute vestibular migraine (VM) treatment.MethodsThis was a retrospective chart review of patients with VM treated with nVNS in a single tertiary referral center between November 2017 and January 2019. Eighteen patients (16 women) were identified (mean age 45.7 [±14.8] years); 14 were treated for a VM attack and 4 for bothersome interictal dizziness consistent with persistent perceptual postural dizziness (PPPD). Patients graded the severity of vestibular symptoms and headache using an 11-point visual analog scale (VAS; 0 = no symptoms, 10 = worst ever symptoms) before and 15 minutes after nVNS.ResultsIn those with acute VM, vertigo improved in 13/14 (complete resolution in 2, at least 50% improvement in 5). The mean vertigo intensity before nVNS was 5.2 (±1.6; median 6), and 3.1 (±2.2; median 3) following stimulation; mean reduction in vertigo intensity was 46.9% (±31.5; median 45%). Five experienced headache with the VM attack; all reported improvement following nVNS. Mean headache severity was 6 (±1.4; median 6) prior to treatment and 2.4 (±1.5; median 3) following nVNS; mean reduction in headache intensity was 63.3% (±21.7; median 50). All 4 treated with nVNS for interictal PPPD reported no benefit.ConclusionOur study provides preliminary evidence that nVNS may provide rapid relief of vertigo and headache in acute VM, and supports further randomized, sham-controlled studies into nVNS in VM.Classification of evidenceThis study provides Class IV evidence that for patients with acute VM, nVNS rapidly relieves vertigo and headache.
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Popkirov S, Stone J, Holle-Lee D. Treatment of Persistent Postural-Perceptual Dizziness (PPPD) and Related Disorders. Curr Treat Options Neurol 2018; 20:50. [PMID: 30315375 DOI: 10.1007/s11940-018-0535-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Persistent postural-perceptual dizziness (PPPD) is a newly defined disorder of functional dizziness that in the International Classification of Diseases in its 11th revision (ICD-11) supersedes phobic postural vertigo and chronic subjective dizziness. Despite efforts to unify the diagnosis of functional (somatoform) dizziness, patients will present with a variety of triggers, perpetuating factors, and comorbidities, requiring individualized treatment. This article will review different treatment strategies for this common functional neurological disorder and provide practical recommendations for tailored therapy. RECENT FINDINGS An emerging understanding of the underlying pathophysiology that considers vestibular, postural, cognitive, and emotional aspects can enable patients to profit from vestibular rehabilitation, as well as cognitive-behavioral therapy (CBT). Crucially, approaches from CBT should inform and augment physiotherapeutic techniques, and, on the other hand, vestibular exercises or relaxation techniques can be integrated into CBT programs. Antidepressant medication might further facilitate rehabilitation, though the mechanisms are yet to be elucidated, and the level of evidence is low. In PPPD and related disorders, vestibular rehabilitation combined with CBT, and possibly supported by medication, can help patients escape a cycle of maladaptive balance control, recalibrate vestibular systems, and regain independence in everyday life.
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Affiliation(s)
- Stoyan Popkirov
- Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, Bochum, Germany.
| | - Jon Stone
- Centre for Clinical Brain Sciences, Western General Hospital, University of Edinburgh, Edinburgh, UK
| | - Dagny Holle-Lee
- Dizziness and Vertigo Center Essen and Department of Neurology, University of Duisburg-Essen, Essen, Germany
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