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Hu J, Wang Q, Dai Y, Tian Y, Xu N, Wen H, Dou Z, Ye Q. Screening for optimal parameters for modified pharyngeal electrical stimulation for the treatment of dysphagia after stroke in rats. Exp Neurol 2024; 379:114878. [PMID: 38944330 DOI: 10.1016/j.expneurol.2024.114878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 06/11/2024] [Accepted: 06/25/2024] [Indexed: 07/01/2024]
Abstract
Pharyngeal electrical stimulation (PES), a novel noninvasive peripheral nerve stimulation technique, can effectively improve neurogenic dysphagia and increase the safety and effectiveness of swallowing in the clinic. However, the lack of animal models for dysphagia has limited the mechanistic research on PES, which affects its wide application. Therefore, determining optimal parameters for PES in rats is needed to enable mechanistic studies. Modified PES (mPES), which has different waves and pulse widths from PES, was used; in previous studies mPES was found to have a neurological mechanism like that of PES. A poststroke dysphagia (PSD) model was established, and rats with dysphagia were grouped into three different intensities (0.1 mA, 0.5 mA, and 1 mA) for the selection of optimal intensity and three different frequencies (1 Hz, 2 Hz, and 5 Hz) for the selection of optimal frequency based on a stimulation duration of 10 min in the clinic. A Videofluroscopic Swallow Screen (VFSS) was used to assess swallowing function in rats before and after mPES treatment. The results showed that the 1 mA group had better swallowing function (p < 0.05) than the model group. Compared with the model group, the 1 Hz and 5 Hz groups had the same improvement in swallowing function (p < 0.05). However, the increase in excitatory signals in the sensorimotor cortex was more pronounced in the 5 Hz group than in the other frequency stimulation groups (p < 0.05). Combining the clinical findings with the above results, we concluded that the optimal stimulation parameter for mPES in rats is "frequency: 5 Hz, current intensity: 1 mA for 10 min/day", which provides a basis for future basic experimental studies of mPES in animals.
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Affiliation(s)
- Jiahui Hu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qianqian Wang
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yong Dai
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yueqin Tian
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Nenggui Xu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hongmei Wen
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zulin Dou
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Qiuping Ye
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
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Muhle P, Claus I, Labeit B, Roderigo M, Warnecke T, Dziewas R, Suntrup-Krueger S. Pharyngeal Electrical Stimulation prior to extubation - Reduction of extubation failure rate in acute stroke patients? J Crit Care 2024; 82:154808. [PMID: 38581884 DOI: 10.1016/j.jcrc.2024.154808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 03/15/2024] [Accepted: 03/29/2024] [Indexed: 04/08/2024]
Abstract
PURPOSE The aim of our study was to assess if PES before extubation can minimize the extubation failure risk in orally intubated, mechanically ventilated stroke patients at high risk of severe dysphagia. MATERIALS AND METHODS Thirty-two ICU patients were prospectively enrolled in this study presenting with a high risk for dysphagia as defined by a DEFISS (Determine Extubation Failure In Severe Stroke) risk score and compared 1:1 to a retrospective matched patient control group. The prospective patient group received PES prior to extubation. Endpoints were need for reintubation, swallowing function as assessed with FEES, pneumonia incidence and length of stay after extubation. RESULTS Post-extubation, the Fiberoptic Endoscopic Dysphagia Severity Score (FEDSS, 4.31 ± 1.53vs.5.03 ± 1.28;p = 0.047) and reintubation rate within 72 h (9.4vs.34.4%;p = 0.032) were significantly lower in the PES group than in the historical control group. Pulmonary infections after extubation were less common in PES-treated patients although this difference was not significant (37.5vs.59.4%;p = 0.133). Time from extubation to discharge was significantly shorter after PES compared with the control group (14.09 ± 11.58vs.26.59 ± 20.49 days;p = 0.003). CONCLUSIONS In orally intubated and mechanically ventilated stroke patients at high risk of severe dysphagia, PES may improve swallowing function, reduce extubation failure risk and decrease time from extubation to discharge. Further research is required.
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Affiliation(s)
- Paul Muhle
- University Hospital Muenster, Department of Neurology with Institute for Translational Neurology, Albert-Schweitzer-Campus 1A, 48149 Muenster, Germany.
| | - Inga Claus
- University Hospital Muenster, Department of Neurology with Institute for Translational Neurology, Albert-Schweitzer-Campus 1A, 48149 Muenster, Germany
| | - Bendix Labeit
- University Hospital Muenster, Department of Neurology with Institute for Translational Neurology, Albert-Schweitzer-Campus 1A, 48149 Muenster, Germany
| | - Malte Roderigo
- University Hospital Muenster, Department of Neurology with Institute for Translational Neurology, Albert-Schweitzer-Campus 1A, 48149 Muenster, Germany
| | - Tobias Warnecke
- Klinikum Osnabrück, Department of Neurology, Am Finkenhügel 1, 49076 Osnabrück, Germany
| | - Rainer Dziewas
- Klinikum Osnabrück, Department of Neurology, Am Finkenhügel 1, 49076 Osnabrück, Germany
| | - Sonja Suntrup-Krueger
- University Hospital Muenster, Department of Neurology with Institute for Translational Neurology, Albert-Schweitzer-Campus 1A, 48149 Muenster, Germany
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Sasegbon A, Cheng I, Labeit B, Lapa S, Rommel N, Hamdy S. New and Evolving Treatments for Neurologic Dysphagia. Drugs 2024:10.1007/s40265-024-02064-x. [PMID: 38954267 DOI: 10.1007/s40265-024-02064-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2024] [Indexed: 07/04/2024]
Abstract
Despite swallowing being a frequently performed daily function, it is highly complex. For a safe swallow to occur, muscles within the head, neck, and thorax need to contract in a concerted pattern, controlled by several swallowing centers at multiple levels of the central nervous system, including the midbrain, cerebral cortex, and cerebellum in addition to five cranial nerves. Dysphagia, or difficulty swallowing, is caused by a long list of pathologic processes and diseases, which can interfere with various stages along the swallowing sensorimotor pathway. When present, dysphagia leads to increased mortality, morbidity, hospital length of stay, and reduced quality of life. Current dysphagia management approaches, such as altering the texture and consistency of foods and fluids and teaching patients rehabilitative exercises, have been broadly unchanged for many years and, in the case of texture modification, are of uncertain effectiveness. However, evidence is emerging in support of new medication-based and neuromodulatory treatment approaches. Regarding medication-based therapies, most research has focused on capsaicinoids, which studies have shown are able to improve swallowing in patients with post-stroke dysphagia. Separately, albeit convergently, in the field of neuromodulation, there is a growing and positive evidential base behind three non-invasive brain stimulation techniques: repetitive transcranial magnetic stimulation (rTMS), transcranial direct current stimulation (TDCS), and pharyngeal electrical stimulation (PES). Should some or all of these emerging therapies fulfill their promise, dysphagia-related patient outcomes may be improved. This paper describes the current state of our understanding regarding new medication and neuromodulation-based neurogenic oropharyngeal dysphagia treatments.
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Affiliation(s)
- Ayodele Sasegbon
- Division of Diabetes, Endocrinology and Gastroenterology, Faculty of Biology, Medicine and Health, School of Medical Sciences, Centre for Gastrointestinal Sciences, University of Manchester, Manchester, UK
| | - Ivy Cheng
- Division of Diabetes, Endocrinology and Gastroenterology, Faculty of Biology, Medicine and Health, School of Medical Sciences, Centre for Gastrointestinal Sciences, University of Manchester, Manchester, UK
- Academic Unit of Human Communication, Learning, and Development, Faculty of Education, The University of Hong Kong, Hong Kong, China
- Institute for Biomagnetism and Biosignal Analysis, University of Münster, Münster, Germany
- Universitätsklinikum Münster, Münster, Germany
| | - Bendix Labeit
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Sriramya Lapa
- Department of Neurology, Goethe University and University Hospital, Frankfurt, Germany
| | - Nathalie Rommel
- Deglutology, Experimental Otorhinolaryngology, Department of Neurosciences, University of Leuven, Leuven, Belgium
- Department of Gastroenterology, Neurogastroenterology and Motility, University Hospitals Leuven, Leuven, Belgium
| | - Shaheen Hamdy
- Division of Diabetes, Endocrinology and Gastroenterology, Faculty of Biology, Medicine and Health, School of Medical Sciences, Centre for Gastrointestinal Sciences, University of Manchester, Manchester, UK.
- Centre for Gastrointestinal Sciences, Salford Royal Foundation Trust, University of Manchester, Clinical Sciences Building, Manchester, Eccles Old Road, Salford, M6 8HD, UK.
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Chen J, Zhao F, Hong J, Li C, Zhang J, Shan Y, Ye Q, Wen H. Effect of high-frequency repetitive transcranial magnetic stimulation on swallowing function and pneumonia in poststroke dysphagia in rats. Brain Res 2024; 1832:148846. [PMID: 38432259 DOI: 10.1016/j.brainres.2024.148846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/17/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Post-stroke dysphagia (PSD) is a common symptom of stroke. Clinical complications of PSD include malnutrition and pneumonia. Clinical studies have shown that high-frequency repetitive transcranial magnetic stimulation (HF-rTMS) can improve the swallowing function in stroke patients. However, few studies have elucidated the underlying molecular mechanisms. METHODS A PSD rat model was established using transient middle cerebral artery occlusion (tMCAO). Rats were randomly divided into sham-operated groups, PSD groups, PSD + sham-rTMS groups, PSD + 5 Hz-rTMS groups, PSD + 10 Hz-rTMS groups and PSD + 20 Hz-rTMS groups. Rats were weighed and videofluoroscopic swallowing studies were conducted. Pulmonary inflammation, levels of substance P (SP) and calcitonin gene-related peptide (CGRP) in the serum, lung, and nucleus tractus solitarius (NTS), brain-derived neurotrophic factor (BDNF) and 5-hydroxytryptamine (5HT) in NTS were evaluated. RESULTS Rats in the PSD group experienced weight loss, reduced bolus area and pharyngeal bolus speed, and increased pharyngeal transit time (PTT) and inter-swallow interval (ISI) on day 7 and day 14 after operation. Moreover, PSD rats showed pulmonary inflammation, reduced levels of SP in the lung and serum, increased levels of CGRP in the lung and NTS, reduced levels of BDNF and 5HT in the NTS. There was no significant difference between the PSD group and the PSD + sham-rTMS group in the results of weight and VFSS. Comparing with the PSD group, there significant increases in the bolus area, decreases in PTT of rats following 5 Hz rTMS intervention. HF-rTMS at 10 Hz significantly increased the weight, bolus area, pharyngeal bolus speed and decreased the PTT and ISI of rats. There were also significant increases in the bolus area (p < 0.01) and pharyngeal bolus speed, decreases in PTT and ISI of rats following 20 Hz rTMS intervention. Furthermore, compared with the PSD + 5 Hz-rTMS group, there were significant increases in the bolus area and pharyngeal bolus speed, decreases in ISI in the swallowing function of rats in the PSD + 10 Hz-rTMS group. Besides, compared with the PSD + 5 Hz-rTMS group, there were significant decreases in ISI in the swallowing function of rats in the PSD + 20 Hz-rTMS group. HF-rTMS at 10 Hz alleviated pulmonary inflammation, increased the levels of SP in the lung, serum, and NTS, CGRP in the serum and NTS, 5HT in the NTS of PSD rats. CONCLUSION Compared with 5 Hz and 20 Hz rTMS, 10 Hz rTMS more effectively improved the swallowing function of rats with PSD. HF-rTMS at 10 Hz improved the swallowing function and alleviated pneumonia in PSD rats. The mechanism may be related to increased levels of SP in the lung, serum and NTS, levels of CGRP in the serum and NTS, 5HT in the NTS after HF-rTMS treatment.
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Affiliation(s)
- Jiemei Chen
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
| | - Fei Zhao
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
| | - Jiena Hong
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
| | - Chao Li
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
| | - Jiantao Zhang
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
| | - Yilong Shan
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
| | - Qiuping Ye
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China; Clinical Medical College of Acupuncture Moxibustion and Rehabilitation, Guangzhou University of Traditional Chinese Medicine, 232 East Waihuan Road, Guangzhou 510006, Guangdong Province, China.
| | - Hongmei Wen
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China.
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Guanyabens N, Tomsen N, Palomeras E, Mundet L, Clavé P, Ortega O. Neurophysiological characterization of oropharyngeal dysphagia in older patients. Clin Neurophysiol 2024; 162:129-140. [PMID: 38615499 DOI: 10.1016/j.clinph.2024.03.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 03/09/2024] [Accepted: 03/21/2024] [Indexed: 04/16/2024]
Abstract
OBJECTIVE To characterize swallowing biomechanics and neurophysiology in older patients with oropharyngeal dysphagia (OD). METHODS Observational study in 12 young healthy volunteers (HV), 9 older HV (OHV) and 12 older patients with OD with no previous diseases causing OD (OOD). Swallowing biomechanics were measured by videofluoroscopy, neurophysiology with pharyngeal sensory (pSEP) and motor evoked-potentials (pMEP) to intrapharyngeal electrical and transcranial magnetic stimulation (TMS), respectively, and salivary neuropeptides with enzyme-linked immunosorbent assay (ELISA). RESULTS 83.3% of OOD patients had unsafe swallows (Penetration-Aspiration scale = 4.3 ± 2.1; p < 0.0001) with delayed time to laryngeal vestibule closure (362.5 ± 73.3 ms; p < 0.0001) compared to both HV groups. OOD patients had: (a) higher pharyngeal sensory threshold (p = 0.009) and delayed pSEP P1 and N2 latencies (p < 0.05 vs HV) to electrical stimulus; and (b) higher pharyngeal motor thresholds to TMS in both hemispheres (p < 0.05) and delayed pMEPs latencies (right, p < 0.0001 HV vs OHV/OOD; left, p < 0.0001 HV vs OHV/OOD). CONCLUSIONS OOD patients have unsafe swallow and delayed swallowing biomechanics, pharyngeal hypoesthesia with disrupted conduction of pharyngeal sensory inputs, and reduced excitability and delayed cortical motor response. SIGNIFICANCE These findings suggest new elements in the pathophysiology of aging-associated OD and herald new and more specific neurorehabilitation treatments for these patients.
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Affiliation(s)
- Nicolau Guanyabens
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Barcelona, Spain; Neurology Department, Hospital de Mataró, Barcelona, Spain
| | - Noemí Tomsen
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Lluís Mundet
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - Pere Clavé
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain.
| | - Omar Ortega
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
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Nakajima Y, Tsujimura T, Tsuji K, Magara J, Inoue M. Continuous electrical stimulation of superior laryngeal nerve inhibits initiation of swallowing in anesthetized rats. Neurosci Lett 2024; 825:137672. [PMID: 38360144 DOI: 10.1016/j.neulet.2024.137672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024]
Abstract
Pharyngeal electrical stimulation (PES) applies electrical stimulation to pharyngeal mucosa (PhM) and represents a useful approach to improve swallowing function in patients with dysphagia. To determine the optimal PES modality to treat dysphagia, the mechanism underlying the effects of PES on swallowing function must be elucidated. In this study, we evaluated how PES and electrical stimulation of the superior laryngeal nerve (SLN) modulate the initiation of swallowing in anesthetized rats. A swallow was evoked by electrical stimulation of the PhM, SLN, and nucleus of the solitary tract (nTS) and pharyngeal mechanical stimulation using a von Frey filament. A swallow was identified by electromyographic bursts in mylohyoid and thyrohyoid muscles. Bilateral SLN transection abolished the swallows evoked by PhM electrical stimulation. PhM and SLN electrical stimulation decreased swallowing frequency in a similar time-dependent manner. Intravenous administration of the GABAA receptor antagonist bicuculine did not affect the time-dependent change in swallowing frequency during SLN electrical stimulation. Continuous SLN electrical stimulation significantly inhibited pharyngeal mechanically and nTS-electrically evoked swallows compared with before and 5 min after stimulation. The present findings suggest that the SLN plays a primary role in PES-evoked swallows. Additionally, continuous SLN electrical stimulation inhibits the initiation of swallowing, and the modulation of central network associated with swallowing might be partially involved in this inhibition.
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Affiliation(s)
- Yuta Nakajima
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata 951-8514, Japan
| | - Takanori Tsujimura
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata 951-8514, Japan.
| | - Kojun Tsuji
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata 951-8514, Japan
| | - Jin Magara
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata 951-8514, Japan
| | - Makoto Inoue
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata 951-8514, Japan
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Cheng I, Sasegbon A, Hamdy S. Evaluating the Therapeutic Application of Neuromodulation in the Human Swallowing System. Dysphagia 2023; 38:1005-1024. [PMID: 36239821 PMCID: PMC10326109 DOI: 10.1007/s00455-022-10528-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/30/2022] [Indexed: 11/03/2022]
Abstract
In the last two decades, the focus of neurogenic dysphagia management has moved from passive compensatory strategies to evidence-based rehabilitative approaches. Advances in technology have enabled the development of novel treatment approaches such as neuromodulation techniques, which target the promotion of neurological reorganization for functional recovery of swallowing. Given the rapid pace of development in the field, this review aims to summarize the current findings on the effects of neuromodulation techniques on the human swallowing system and evaluate their therapeutic potential for neurogenic dysphagia. Implications for future clinical research and practical considerations for using neuromodulation in clinical practice will also be discussed.
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Affiliation(s)
- Ivy Cheng
- Centre for Gastrointestinal Sciences, Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Ayodele Sasegbon
- Centre for Gastrointestinal Sciences, Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Shaheen Hamdy
- Centre for Gastrointestinal Sciences, Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
- Centre for Gastrointestinal Sciences, University of Manchester, Clinical Sciences Building, Salford Royal Foundation Trust, Eccles Old Road, Salford, M6 8HD, UK.
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Alvarez-Larruy M, Tomsen N, Guanyabens N, Palomeras E, Clavé P, Nascimento W. Spontaneous Swallowing Frequency in Post-Stroke Patients with and Without Oropharyngeal Dysphagia: An Observational Study. Dysphagia 2023; 38:200-210. [PMID: 35460440 PMCID: PMC9034075 DOI: 10.1007/s00455-022-10451-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 04/08/2022] [Indexed: 01/27/2023]
Abstract
Oropharyngeal dysphagia (OD) is a frequent complication after stroke (PSOD) that increases morbidity and mortality. Early detection of PSOD is essential to reduce morbidity and mortality in patients with acute stroke. In recent years, an association between reduced spontaneous swallowing frequency (SSF) and OD has been described. Likewise, the reduction of saliva substance P (SP) concentration has been associated with an increased risk of aspiration and a decrease in SSF. In this study we aimed to compare SSF, salivary SP concentration, hydration and nutritional status in post-stroke (PS) patients with and without OD. We included 45 acute PS patients (4.98 ± 2.80 days from stroke onset, 62.22% men, 71.78 ± 13.46 year). The Volume-Viscosity Swallowing Test (V-VST) was performed for clinical diagnosis of OD. SSF/minute was assessed through 10-min neurophysiological surface recordings including suprahyoid-electromyography and cricothyroid-accelerometry. Saliva samples were collected with a Salivette® to determine SP by ELISA. Hydration status was assessed by bioimpedance. Nutritional status was evaluated by Mini Nutritional Assessment Short Form (MNA-sf) and blood analysis. Twenty-seven PS patients (60%) had OD; 19 (40%), impaired safety of swallow. SSF was significantly reduced in PSOD, 0.23 ± 0.18 and PSOD with impaired safety, 0.22 ± 0.18 vs 0.48 ± 0.29 swallows/minute in PS without OD (PSnOD); (both p < 0.005). Nutritional risk was observed in 62.92% PSOD vs 11.11% PSnOD (p = 0.007) and visceral protein markers were also significantly reduced in PSOD (p < 0.05). Bioimpedance showed intracellular dehydration in 37.50% PSOD vs none in PSnOD. There were no differences for saliva SP concentrations. SSF is significantly reduced in PSOD in comparison with PSnOD. Acute PSOD patients present poor nutritional status, hydropenia, and high risk for respiratory complications.
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Affiliation(s)
- Marta Alvarez-Larruy
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Mataró, Spain
- Department of Neurology, Hospital de Mataró, Mataró, Spain
| | - Noemí Tomsen
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Mataró, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas Y Digestivas (CIBERehd), Instituto de Salud Carlos III, Barcelona, Spain
| | - Nicolau Guanyabens
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Mataró, Spain
- Department of Neurology, Hospital de Mataró, Mataró, Spain
| | | | - Pere Clavé
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Mataró, Spain.
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas Y Digestivas (CIBERehd), Instituto de Salud Carlos III, Barcelona, Spain.
- Department of Surgery, Hospital de Mataró, Universitat Autònoma de Barcelona, Carretera de Cirera s/n 08304, Mataró, Spain.
| | - Weslania Nascimento
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró, Universitat Autónoma de Barcelona, Mataró, Spain
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Neuroplasticity Elicited by Modified Pharyngeal Electrical Stimulation: A Pilot Study. Brain Sci 2023; 13:brainsci13010119. [PMID: 36672100 PMCID: PMC9856550 DOI: 10.3390/brainsci13010119] [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: 11/13/2022] [Revised: 12/26/2022] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
Modified pharyngeal electrical stimulation (mPES) is a novel therapeutic method for patients with neurogenic dysphagia and tracheostomy. However, the underlying neural mechanisms are still unclear. This study aims to investigate the impact of mPES on swallowing-related neural networks and involuntary swallowing frequency using functional near-infrared spectroscopy (fNIRS). 20 healthy volunteers participated in this study, including two separate experimental paradigms. Experiment 1: Immediate effect observation, 20 participants (10 female; mean age 47.65 ± 10.48) were delivered with real and sham mPES in random order for 8 repetitions. fNIRS signals were collected during the whole period of Experiments 1. Swallowing frequency was assessed during sham/real mPES. Experiment 2: Prolonged effect observation, 7 out of the 20 participants (4 female; mean age 49.71 ± 6.26) completed real mPES for 5 sessions (1 session/day). 13 of the 20 participants withdrew for personal reasons. Hemodynamic changes were recorded by fNIRS on day 1 and 5. Results show that mPES evoked cortical activation over a distributed network in bilateral primary somatosensory, primary motor, somatosensory association cortex, pre-motor and supplementary motor area, dorsolateral prefrontal cortex, Broca's area, and supramarginal gyrus part of Wernicke's area. Meanwhile, the increased frequency of involuntary swallowing was associated with decreased frontopolar activation (frontopolar cortex: Channel 6, p = 0.024, r = -0.529; Channel 23, p = 0.019, r = -0.545). Furthermore, after five days of mPES, decreased cortical activations were observed in the right dorsolateral prefrontal and supramarginal gyrus part of Wernicke's area, and left frontopolar and M1 areas. Overall, these results might suggest that mPES could elicit changes in neuroplasticity that could reorganize the swallowing-related neural network and increase involuntary swallow frequency.
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Zhang X, Liang Y, Wang X, Shan Y, Xie M, Li C, Hong J, Chen J, Wan G, Zhang Y, Lin Y, Zhao F, He Z, Dou Z, Wen H. Effect of Modified Pharyngeal Electrical Stimulation on Patients with Severe Chronic Neurogenic Dysphagia: A Single-Arm Prospective Study. Dysphagia 2022:10.1007/s00455-022-10536-z. [DOI: 10.1007/s00455-022-10536-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 10/26/2022] [Indexed: 11/22/2022]
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11
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Cheng I, Hamad A, Sasegbon A, Hamdy S. Advances in the Treatment of Dysphagia in Neurological Disorders: A Review of Current Evidence and Future Considerations. Neuropsychiatr Dis Treat 2022; 18:2251-2263. [PMID: 36268265 PMCID: PMC9578488 DOI: 10.2147/ndt.s371624] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/08/2022] [Indexed: 11/19/2022] Open
Abstract
Dysphagia, which refers to difficult and/or disordered swallowing, is a common problem associated with various neurological diseases such as stroke, motor neuron diseases and neurodegenerative diseases. Traditionally, dysphagia treatments are either compensatory, which includes modifications of bolus texture or feeding posture, or rehabilitative, which includes behavioral exercises and sensory stimulation. Despite being widely adopted in clinical practice, recent views have challenged the clinical efficacy of these treatments due to the low level of evidence supported by mainly non-controlled studies. As such, with advancements in technology and scientific research methods, recent times have seen a surge in the development of novel dysphagia treatments and an increasing number of robust randomized controlled clinical trials. In this review, we will review the clinical evidence of several newly introduced treatments for dysphagia in the last two decades, including rehabilitative exercises, biofeedback, pharmacological treatments, neuromodulation treatments and soft robotics. Despite the recent improvements in the quality of evidence for the efficacy of dysphagia treatments, several critical issues, including heterogeneity in treatment regimens, long-term treatment effects, underlying mechanisms of some neuromodulation treatments, and the effects of these techniques in non-stroke dysphagia, remain to be addressed in future clinical trials.
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Affiliation(s)
- Ivy Cheng
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Centre for Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Adeel Hamad
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Centre for Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Ayodele Sasegbon
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Centre for Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Shaheen Hamdy
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Centre for Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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12
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Dziewas R, Allescher HD, Aroyo I, Bartolome G, Beilenhoff U, Bohlender J, Breitbach-Snowdon H, Fheodoroff K, Glahn J, Heppner HJ, Hörmann K, Ledl C, Lücking C, Pokieser P, Schefold JC, Schröter-Morasch H, Schweikert K, Sparing R, Trapl-Grundschober M, Wallesch C, Warnecke T, Werner CJ, Weßling J, Wirth R, Pflug C. Diagnosis and treatment of neurogenic dysphagia - S1 guideline of the German Society of Neurology. Neurol Res Pract 2021; 3:23. [PMID: 33941289 PMCID: PMC8094546 DOI: 10.1186/s42466-021-00122-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 02/06/2023] Open
Abstract
Introduction Neurogenic dysphagia defines swallowing disorders caused by diseases of the central and peripheral nervous system, neuromuscular transmission, or muscles. Neurogenic dysphagia is one of the most common and at the same time most dangerous symptoms of many neurological diseases. Its most important sequelae include aspiration pneumonia, malnutrition and dehydration, and affected patients more often require long-term care and are exposed to an increased mortality. Based on a systematic pubmed research of related original papers, review articles, international guidelines and surveys about the diagnostics and treatment of neurogenic dysphagia, a consensus process was initiated, which included dysphagia experts from 27 medical societies. Recommendations This guideline consists of 53 recommendations covering in its first part the whole diagnostic spectrum from the dysphagia specific medical history, initial dysphagia screening and clinical assessment, to more refined instrumental procedures, such as flexible endoscopic evaluation of swallowing, the videofluoroscopic swallowing study and high-resolution manometry. In addition, specific clinical scenarios are captured, among others the management of patients with nasogastric and tracheotomy tubes. The second part of this guideline is dedicated to the treatment of neurogenic dysphagia. Apart from dietary interventions and behavioral swallowing treatment, interventions to improve oral hygiene, pharmacological treatment options, different modalities of neurostimulation as well as minimally invasive and surgical therapies are dealt with. Conclusions The diagnosis and treatment of neurogenic dysphagia is challenging and requires a joined effort of different medical professions. While the evidence supporting the implementation of dysphagia screening is rather convincing, further trials are needed to improve the quality of evidence for more refined methods of dysphagia diagnostics and, in particular, the different treatment options of neurogenic dysphagia. The present article is an abridged and translated version of the guideline recently published online (https://www.awmf.org/uploads/tx_szleitlinien/030-111l_Neurogene-Dysphagie_2020-05.pdf).
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Affiliation(s)
- Rainer Dziewas
- Klinik für Neurologie, Universitätsklinik Münster, 48149 Münster, Germany. .,Klinik für Neurologie und Neurologische Frührehabilitation, Klinikum Osnabrück, Am Finkenhügel 1, 49076, Osnabrück, Germany.
| | - Hans-Dieter Allescher
- Zentrum für Innere Medizin, Klinikum Garmisch-Partenkirchen GmbH, Auenstraße 6, 82467, Garmisch-Partenkirchen, Germany
| | - Ilia Aroyo
- Klinik für Neurologie und Neurointensivmedizin, Klinikum Darmstadt, Grafenstr. 9, 64283, Darmstadt, Germany
| | | | | | - Jörg Bohlender
- Universitätsspital Zürich, ORL-Klinik, Abteilung für Phoniatrie und Klinische Logopädie, Frauenklinikstr. 24, 8091, Zürich, Schweiz
| | - Helga Breitbach-Snowdon
- Schule für Logopädie, Universitätsklinikum Münster, Kardinal-von-Galen-Ring 10, 48149, Münster, Germany
| | | | - Jörg Glahn
- Universitätsklinik für Neurologie und Neurogeriatrie, Johannes Wesling Klinikum Minden, Hans-Nolte Strasse 1, 32429, Minden, Germany
| | - Hans-Jürgen Heppner
- Private Universität Witten/Herdecke gGmbH, Alfred-Herrhausen-Straße 50, 58448, Witten, Germany
| | - Karl Hörmann
- University Medical Centre Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Christian Ledl
- Abteilung Sprach-, Sprech- und Schlucktherapie, Schön Klinik Bad Aibling SE & Co. KG, Kolbermoorer Str. 72, 83043, Bad Aibling, Germany
| | - Christoph Lücking
- Schön Klinik München Schwabing, Parzivalplatz 4, 80804, München, Germany
| | - Peter Pokieser
- Medizinische Universität Wien, Teaching Center / Unified Patient Program, AKH Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich
| | - Joerg C Schefold
- Universitätsklinik für Intensivmedizin, Inselspital, Universitätsspital Bern, 3010, Bern, Schweiz
| | | | - Kathi Schweikert
- REHAB Basel, Klinik für Neurorehabilitation und Paraplegiologie, Im Burgfelderhof 40, 4012, Basel, Schweiz
| | - Roland Sparing
- VAMED Klinik Hattingen GmbH, Rehabilitationszentrum für Neurologie, Neurochirurgie, Neuropädiatrie, Am Hagen 20, 45527, Hattingen, Germany
| | - Michaela Trapl-Grundschober
- Klinische Abteilung für Neurologie, Therapeutischer Dienst, Universitätsklinikum Tulln, Karl Landsteiner Privatuniversität für Gesundheitswissenschaften, Alter Ziegelweg 10, 3430, Tulln an der Donau, Österreich
| | - Claus Wallesch
- BDH-Klinik Elzach gGmbH, Am Tannwald 1, 79215, Elzach, Germany
| | - Tobias Warnecke
- Klinik für Neurologie, Universitätsklinik Münster, 48149 Münster, Germany
| | - Cornelius J Werner
- Sektion Interdisziplinäre Geriatrie, Klinik für Neurologie, Medizinische Fakultät, Uniklinik RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Johannes Weßling
- Zentrum für Radiologie, Neuroradiologie und Nuklearmedizin, Clemenskrankenhaus Münster, Düesbergweg 124, 48153, Münster, Germany
| | - Rainer Wirth
- Klinik für Altersmedizin und Frührehabilitation, Marien Hospital Herne, Universitätsklinikum der Ruhr-Universität Bochum, Katholische Kliniken Rhein-Ruhr, Hölkeskampring 40, 44625, Herne, Germany
| | - Christina Pflug
- Klinik und Poliklinik für Hör-, Stimm- und Sprachheilkunde, Universitäres Dysphagiezentrum Hamburg, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
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13
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Suntrup-Krueger S, Muhle P, Kampe I, Egidi P, Ruck T, Lenze F, Jungheim M, Gminski R, Labeit B, Claus I, Warnecke T, Gross J, Dziewas R. Effect of Capsaicinoids on Neurophysiological, Biochemical, and Mechanical Parameters of Swallowing Function. Neurotherapeutics 2021; 18:1360-1370. [PMID: 33449304 PMCID: PMC8423940 DOI: 10.1007/s13311-020-00996-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2020] [Indexed: 01/25/2023] Open
Abstract
Oropharyngeal dysphagia is prevalent in age-related neurological disorders presenting with impaired efficacy and safety of swallowing due to a loss of muscle force and sensory deficits. Stimulating the oropharynx with capsaicin that mediates Substance P release is an emerging pharmacological treatment option which needs further scientific evidence. Our aim was to comprehensively evaluate the effect of capsaicin on biochemical, neurophysiological, and biomechanical parameters of swallowing function. In a randomized study on healthy individuals, the impact of orally administered capsaicinoids at different dosages and application durations in comparison to non-carbonated water was evaluated. Time course and magnitude of salivary Substance P increase were monitored. Magnetoencephalography was used to detect cortical swallowing network alterations. Modifications in swallowing biomechanics were measured applying high-resolution pharyngeal manometry. Capsaicinoids at 10 μmol/L improved swallowing efficacy as seen by a significant increase of pharyngeal contractile integral and upper esophageal sphincter activation and relaxation times in manometry. Significant improvement of precision in a challenging swallow task accompanied by a reduction in swallowing-related submental electromyographic power was observed with capsaicinoids preconditioning at 10 μmol/L over 5 min, but not with continuous stimulation. The cortical activation pattern remained unchanged after any intervention. A significant increase of salivary Substance P was not detected with 10 μmol/L but with 50 μmol/L and lasted for 15 min after application. Capsaicinoids mediate dose-dependent Substance P release and positively alter swallowing biomechanics in healthy subjects. The results provide supportive evidence for the value of natural capsaicinoids to improve swallowing function.
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Affiliation(s)
- Sonja Suntrup-Krueger
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany.
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Malmedyweg 15, 48149, Muenster, Germany.
| | - Paul Muhle
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Malmedyweg 15, 48149, Muenster, Germany
| | - Isabella Kampe
- Pediatrics Department, St. Franziskus-Hospital Ahlen, Robert-Koch-Straße 55, 59227, Ahlen, Germany
| | - Paula Egidi
- Department of Anesthesiology and Intensive Care Medicine, Clemenshospital Münster, Duesbergweg 124, 48153, Muenster, Germany
| | - Tobias Ruck
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
| | - Frank Lenze
- Department of Medicine B for Gastroenterology and Hepatology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
| | - Michael Jungheim
- Department of Phoniatrics and Pediatric Audiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Richard Gminski
- Institute for Infection Prevention and Hospital Epidemiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, 79106, Freiburg, Germany
| | - Bendix Labeit
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Malmedyweg 15, 48149, Muenster, Germany
| | - Inga Claus
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
| | - Tobias Warnecke
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
| | - Joachim Gross
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Malmedyweg 15, 48149, Muenster, Germany
| | - Rainer Dziewas
- Department of Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1 A, 48149, Muenster, Germany
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Tomsen N, Ortega O, Nascimento W, Carrión S, Clavé P. Oropharyngeal Dysphagia in Older People is Associated with Reduced Pharyngeal Sensitivity and Low Substance P and CGRP Concentration in Saliva. Dysphagia 2021; 37:48-57. [PMID: 33710390 DOI: 10.1007/s00455-021-10248-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 01/13/2021] [Indexed: 11/29/2022]
Abstract
Substance P (SP) and Calcitonine gene-related peptide (CGRP) are released by sensory nerve fibers in the oropharynx. Patients with oropharyngeal dysphagia (OD) present reduced oropharyngeal sensitivity and low SP concentration in saliva. We aimed to assess the concentration of salivary SP and CGRP in healthy volunteers, and older people without and with OD, and the relationship with pharyngeal sensory threshold. We included 15 healthy volunteers, 14 healthy elderly and 14 elderly with OD. Swallow function was assessed by videofluoroscopy (VFS). Pharyngeal sensory threshold was assessed by intrapharyngeal electrical stimulation. Hydration and phase angle were assessed by bioimpedance. Saliva samples were collected with a Salivette® to determine SP and CGRP concentration by ELISA. Elderly patients with OD presented impaired safety of swallow (PAS 4.38 ± 0.77 p < 0.0001 vs. healthy volunteers = 1 and healthy elderly = 1.43 ± 0.51). Healthy elderly and elderly with OD presented a reduction in intracellular water and saliva volume (healthy elderly, 592.86 ± 327.79 μl, p = 0.0004; elderly with OD, 422.00 ± 343.01 μl, p = 0.0001 vs healthy volunteers, 1333.33 ± 615.91 μl, r = 0.6621, p < 0.0001). Elderly patients with OD presented an impairment in pharyngeal sensory threshold (10.80 ± 3.92 mA vs. healthy volunteers, 5.74 ± 2.57 mA; p = 0.007) and a reduction in salivary SP (129.34 pg/ml vs. healthy volunteers: 173.89 pg/ml; p = 0.2346) and CGRP levels (24.17 pg/ml vs. healthy volunteers: 508.18 pg/ml; p = 0.0058). There was a negative correlation between both SP and CGRP concentrations and pharyngeal sensory threshold (r = - 0.450, p = 0.024; r = - 0.4597, p = 0.036, respectively), but only SP identified elderly patients with OD with higher pharyngeal sensory threshold. Elderly patients with OD presented hydropenia and sarcopenia, reduced salivary SP and CGRP and impaired pharyngeal sensitivity. Our study suggests SP levels in saliva as a potential biomarker to monitor pharyngeal sensitivity in elderly patients with OD.
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Affiliation(s)
- Noemí Tomsen
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas Y Digestivas (Ciberehd), Instituto de Salud Carlos III, Barcelona, Spain
- Gastrointestinal Motility Laboratory, Department of Surgery, Hospital de Mataró, Consorci Sanitari del Maresme, Universitat Autònoma de Barcelona, Carretera de Cirera s/n 08304, Mataró, Spain
- Institut de Neurociències, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Omar Ortega
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas Y Digestivas (Ciberehd), Instituto de Salud Carlos III, Barcelona, Spain
- Gastrointestinal Motility Laboratory, Department of Surgery, Hospital de Mataró, Consorci Sanitari del Maresme, Universitat Autònoma de Barcelona, Carretera de Cirera s/n 08304, Mataró, Spain
| | - Weslania Nascimento
- Gastrointestinal Motility Laboratory, Department of Surgery, Hospital de Mataró, Consorci Sanitari del Maresme, Universitat Autònoma de Barcelona, Carretera de Cirera s/n 08304, Mataró, Spain
| | - Silvia Carrión
- Gastrointestinal Motility Laboratory, Department of Surgery, Hospital de Mataró, Consorci Sanitari del Maresme, Universitat Autònoma de Barcelona, Carretera de Cirera s/n 08304, Mataró, Spain
| | - Pere Clavé
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas Y Digestivas (Ciberehd), Instituto de Salud Carlos III, Barcelona, Spain.
- Gastrointestinal Motility Laboratory, Department of Surgery, Hospital de Mataró, Consorci Sanitari del Maresme, Universitat Autònoma de Barcelona, Carretera de Cirera s/n 08304, Mataró, Spain.
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15
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A Pilot Study of Pharyngeal Electrical Stimulation for Orally Intubated ICU Patients with Dysphagia. Neurocrit Care 2021; 32:532-538. [PMID: 31313142 DOI: 10.1007/s12028-019-00780-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Dysphagia is a common disorder in neurological and non-neurological intensive care unit (ICU) patients and can lead to aspiration pneumonia, prolonged ventilation, and delayed extubation. Dysphagia is an independent predictor of increased mortality. In dysphagic stroke patients with tracheotomy, the use of pharyngeal electric stimulation (PES), an emerging technique to treat dysphagia, has been shown to improve airway protection and shorten time to decannulation. The objective of this study was to determine whether patients who receive PES have a lower prevalence of pneumonia and frequency of reintubation. DESIGN Secondary analysis of a non-blinded interventional subject sample from a large clinical study with a historical age, pathology, and severity-matched control group. SETTING ICU of a tertiary care medical center. PATIENTS In this pilot non-blinded study, a group of 15 intubated patients in a general and a neurologic ICU received PES while orally intubated during ICU stay. A control group (n = 25) matched for age, type, and region of pathology, and severity of illness expressed by Simplified Acute Physiology Score and Therapeutic Intervention Scoring System was used to compare for pneumonia and need for reintubation. MAIN RESULTS Patients treated with PES had significantly lower prevalence of pneumonia (4 vs 21, p = 0.00046) and frequency of reintubation (0 vs 6, p = 0.046) when compared to controls. CONCLUSION Although limited by its small size and non-blinded design, this is the first study demonstrating the benefits of PES in ICU patients still orally intubated, thus offering a potential new method to reduce morbidity, mortality, and economic burden in a mixed ICU population. In order to further investigate and strengthen our findings, a statistically powered, randomized controlled study is recommended.
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Hara Y, Nakane A, Tohara H, Kubota K, Nakagawa K, Hara K, Yamaguchi K, Yoshimi K, Minakuchi S. Cervical Interferential Current Transcutaneous Electrical Sensory Stimulation for Patients with Dysphagia and Dementia in Nursing Homes. Clin Interv Aging 2021; 15:2431-2437. [PMID: 33456308 PMCID: PMC7804050 DOI: 10.2147/cia.s274968] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/26/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose We aimed to determine the efficacy of interferential current transcutaneous electrical sensory stimulation (IFC-TESS) in patients with dementia who were being treated for dysphagia in nursing homes under normal living conditions. Patients and Methods This study recruited 54 nursing home residents (13 males, 41 females; mean age, 84.5 ± 10.7 years) with dysphagia and dementia. IFC-TESS was performed with Gentle Stim® (Careido Co. Ltd., Kanagawa, Japan) for 15 minutes. Two sessions per day were administered 5 days per week, for 3 weeks. The outcomes included the improvement of the patients' cough reflexes and nutritional states across the 3 weeks of intervention; the former was evaluated with the cough test based on the changes in cough latency time and cough frequency, while the latter was assessed based on changes in the functional oral intake scale (FOIS) score and oral calorie intake. Results The cough latency times before and after the 3-week intervention were 15.8 (7.0-60.0) and 6.7 (3.6-30.7) s/min, respectively; the cough frequencies were 5.0 (0.0-5.0) and 5.0 (5.0-5.0) t/min, respectively; the FOIS scores were 5.0 (5.0-6.0) and 5.0 (5.0-6.0), respectively; and oral calorie intakes were 1300.0 (862.5-1420.0) and 1300.0 (1005.0-1462.5) kcal/day, respectively. All parameters significantly improved across the intervention (p < 0.05). When the results were adjusted for age, sex, body mass index, mini nutritional assessment results, Barthel index, and mini-mental state examination scores, IFC-TESS improved the cough reflex and oral calorie intake in older nursing home residents with dementia. Conclusion Cervical IFC-TESS can improve the cough reflexes and nutritional states of patients with dysphagia and dementia in nursing homes. As it has previously been difficult to perform active rehabilitation with dementia patients, IFC-TESS may be effective and practicable for the rehabilitation of this patient population.
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Affiliation(s)
- Yoshiko Hara
- Department of Gerodontology and Oral Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ayako Nakane
- Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Haruka Tohara
- Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazumasa Kubota
- Department of Gerodontology and Oral Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuharu Nakagawa
- Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koji Hara
- Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kohei Yamaguchi
- Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kanako Yoshimi
- Department of Dysphagia Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shunsuke Minakuchi
- Department of Gerodontology and Oral Rehabilitation, Division of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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17
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Muhle P, Labeit B, Wollbrink A, Claus I, Warnecke T, Wolters CH, Gross J, Dziewas R, Suntrup-Krueger S. Targeting the sensory feedback within the swallowing network-Reversing artificially induced pharyngolaryngeal hypesthesia by central and peripheral stimulation strategies. Hum Brain Mapp 2020; 42:427-438. [PMID: 33068056 PMCID: PMC7776007 DOI: 10.1002/hbm.25233] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/21/2020] [Accepted: 09/29/2020] [Indexed: 12/12/2022] Open
Abstract
Pharyngolaryngeal hypesthesia is a major reason for dysphagia in various neurological diseases. Emerging neuromodulation devices have shown potential to foster dysphagia rehabilitation, but the optimal treatment strategy is unknown. Because functional imaging studies are difficult to conduct in severely ill patients, we induced a virtual sensory lesion in healthy volunteers and evaluated the effects of central and peripheral neurostimulation techniques. In a sham-controlled intervention study with crossover design on 10 participants, we tested the potential of (peripheral) pharyngeal electrical stimulation (PES) and (central) transcranial direct current stimulation (tDCS) to revert the effects of lidocaine-induced pharyngolaryngeal hypesthesia on central sensorimotor processing. Changes were observed during pharyngeal air-pulse stimulation and voluntary swallowing applying magnetoencephalography before and after the interventions. PES induced a significant (p < .05) increase of activation during swallowing in the bihemispheric sensorimotor network in alpha and low gamma frequency ranges, peaking in the right premotor and left primary sensory area, respectively. With pneumatic stimulation, significant activation increase was found after PES in high gamma peaking in the left premotor area. Significant changes of brain activation after tDCS could neither be detected for pneumatic stimulation nor for swallowing. Due to the peripheral cause of dysphagia in this model, PES was able to revert the detrimental effects of reduced sensory input on central processing, whereas tDCS was not. Results may have implications for therapeutic decisions in the clinical context.
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Affiliation(s)
- Paul Muhle
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany.,Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Muenster, Germany
| | - Bendix Labeit
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany.,Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Muenster, Germany
| | - Andreas Wollbrink
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Muenster, Germany
| | - Inga Claus
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany
| | - Tobias Warnecke
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany
| | - Carsten H Wolters
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Muenster, Germany
| | - Joachim Gross
- Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Muenster, Germany
| | - Rainer Dziewas
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany
| | - Sonja Suntrup-Krueger
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany.,Institute for Biomagnetism and Biosignalanalysis, University Hospital Muenster, Muenster, Germany
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Cabib C, Nascimento W, Rofes L, Arreola V, Tomsen N, Mundet L, Palomeras E, Michou E, Clavé P, Ortega O. Short-term neurophysiological effects of sensory pathway neurorehabilitation strategies on chronic poststroke oropharyngeal dysphagia. Neurogastroenterol Motil 2020; 32:e13887. [PMID: 32449296 DOI: 10.1111/nmo.13887] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/20/2020] [Accepted: 04/29/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Neurorehabilitation strategies for chronic poststroke (PS) oropharyngeal dysphagia (OD) have been mainly focused on the neurostimulation of the pharyngeal motor cortex with only marginal effects. In contrast, treatments targeting the PS oropharyngeal sensory pathway dysfunction offer very promising results, but there is little knowledge on the underlying mechanisms. We aimed to explore the neurophysiological mechanisms behind the effect of three sensory neurostimulation strategies. METHODS We carried out a randomized two-blinded parallel group's crossover sham-controlled clinical trial in 36 patients with unilateral stroke and chronic unsafe swallow to investigate the effect of repetitive transcranial magnetic stimulation (rTMS) of the primary sensory cortex (A), oral capsaicin (B) and intra-pharyngeal electrical stimulation (IPES; C). The effect was evaluated immediately after the interventions with videofluoroscopy (VFS) and motor/sensory evoked potentials (MEP/SEP). KEY RESULTS Interventions induced no changes in the biomechanics of the swallow response during VFS. However, an enhancement of motor cortex excitability (latency shortening and increased size of thenar MEP) was found with active interventions (A + B + C, and B/C alone; P < .05 for all) but not with sham. Active but not sham interventions shortened pharyngeal SEP latency in the ipsilesional hemisphere (A + B + C: P2-peak, P = .039; A: N2-peak, P = .034) and antagonized the physiological habituation in pharyngeal MEP (A + B + C and A alone, P < .05 for both). CONCLUSIONS AND INFERENCES Sensory pathway neurostimulation strategies caused immediate enhancement of motor cortex excitability with peripheral strategies (capsaicin and IPES) and of pharyngeal sensory conduction with rTMS. These changes support the use of sensory neurorehabilitation strategies in promoting swallow recovery in chronic PS-OD.
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Affiliation(s)
- Christopher Cabib
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Weslania Nascimento
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain
| | - Laia Rofes
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Viridiana Arreola
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain
| | - Noemí Tomsen
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Lluis Mundet
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Ernest Palomeras
- Neurology Department, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain
| | - Emilia Michou
- Technological Educational Institute Western Greece, Patras, Greece
| | - Pere Clavé
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Omar Ortega
- Gastrointestinal Physiology Laboratory, Department of Surgery, Hospital de Mataró (Universitat Autónoma de Barcelona), Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
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Hossain MZ, Ando H, Unno S, Kitagawa J. Targeting Chemosensory Ion Channels in Peripheral Swallowing-Related Regions for the Management of Oropharyngeal Dysphagia. Int J Mol Sci 2020; 21:E6214. [PMID: 32867366 PMCID: PMC7503421 DOI: 10.3390/ijms21176214] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 12/22/2022] Open
Abstract
Oropharyngeal dysphagia, or difficulty in swallowing, is a major health problem that can lead to serious complications, such as pulmonary aspiration, malnutrition, dehydration, and pneumonia. The current clinical management of oropharyngeal dysphagia mainly focuses on compensatory strategies and swallowing exercises/maneuvers; however, studies have suggested their limited effectiveness for recovering swallowing physiology and for promoting neuroplasticity in swallowing-related neuronal networks. Several new and innovative strategies based on neurostimulation in peripheral and cortical swallowing-related regions have been investigated, and appear promising for the management of oropharyngeal dysphagia. The peripheral chemical neurostimulation strategy is one of the innovative strategies, and targets chemosensory ion channels expressed in peripheral swallowing-related regions. A considerable number of animal and human studies, including randomized clinical trials in patients with oropharyngeal dysphagia, have reported improvements in the efficacy, safety, and physiology of swallowing using this strategy. There is also evidence that neuroplasticity is promoted in swallowing-related neuronal networks with this strategy. The targeting of chemosensory ion channels in peripheral swallowing-related regions may therefore be a promising pharmacological treatment strategy for the management of oropharyngeal dysphagia. In this review, we focus on this strategy, including its possible neurophysiological and molecular mechanisms.
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Affiliation(s)
- Mohammad Zakir Hossain
- Department of Oral Physiology, School of Dentistry, Matsumoto Dental University, 1780 Gobara Hirooka, Shiojiri, Nagano 399-0781, Japan;
| | - Hiroshi Ando
- Department of Biology, School of Dentistry, Matsumoto Dental University, 1780 Gobara, Hirooka, Shiojiri, Nagano 399-0781, Japan;
| | - Shumpei Unno
- Department of Oral Physiology, School of Dentistry, Matsumoto Dental University, 1780 Gobara Hirooka, Shiojiri, Nagano 399-0781, Japan;
| | - Junichi Kitagawa
- Department of Oral Physiology, School of Dentistry, Matsumoto Dental University, 1780 Gobara Hirooka, Shiojiri, Nagano 399-0781, Japan;
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Sasegbon A, Cheng I, Zhang M, Hamdy S. Advances in the Use of Neuromodulation for Neurogenic Dysphagia: Mechanisms and Therapeutic Application of Pharyngeal Electrical Stimulation, Transcranial Magnetic Stimulation, and Transcranial Direct Current Stimulation. AMERICAN JOURNAL OF SPEECH-LANGUAGE PATHOLOGY 2020; 29:1044-1064. [PMID: 32650660 DOI: 10.1044/2020_ajslp-19-00073] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Purpose The swallowing motor system and, specifically, its cortical substrates appear to have certain unique properties that make it highly susceptible to brain plasticity, both driven and following injury. Furthermore, neurogenic dysphagia is a common complication of brain disease, associated with poor outcomes, and yet treatment options remain limited. Therefore, translating the physiology of neurostimulation into clinical populations becomes imperative. In this review, we describe therapeutic application of neuroplasticity in the human swallowing motor system by initially examining the role of pharyngeal electrical stimulation from a mechanistic perspective and then reporting on clinical studies using this approach. Thereafter, we explore the application of noninvasive brain stimulation, which has previously been used to treat nervous system disorders such as depression, pain modulation, and cognitive impairment. Transcranial brain stimulations, in particular, transcranial magnetic stimulation and transcranial direct current stimulation, have been utilized by a number of investigators for rehabilitation in early-stage clinical trials, including dysphagia after neurological disease. In this review, we assess its usefulness in neurogenic dysphagia. Conclusion Early studies indicate these emerging neurostimulatory techniques hold future therapeutic promise. However, both a greater number of and larger clinical trials are required to provide evidence delineating their efficacy and scope of application.
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Affiliation(s)
- Ayodele Sasegbon
- Faculty of Biology, Medicine, and Health, University of Manchester, Salford, United Kingdom
| | - Ivy Cheng
- Faculty of Biology, Medicine, and Health, University of Manchester, Salford, United Kingdom
| | - Mengqing Zhang
- Faculty of Biology, Medicine, and Health, University of Manchester, Salford, United Kingdom
| | - Shaheen Hamdy
- Faculty of Biology, Medicine, and Health, University of Manchester, Salford, United Kingdom
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21
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Schefold JC, Bäcklund M, Ala-Kokko T, Zuercher P, Mukherjee R, Mistry S, Mayer SA, Dziewas R, Bakker J, Jakob SM. The PhINEST study - Pharyngeal ICU Novel Electrical Stimulation Therapy: Study protocol of a prospective, multi-site, randomized, sham-controlled, single-blind (outcome assessor-blinded) study. Medicine (Baltimore) 2020; 99:e19503. [PMID: 32176093 PMCID: PMC7440171 DOI: 10.1097/md.0000000000019503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Post-extubation dysphagia is commonly observed in ICU patients and associated with increased aspiration rates, delayed resumption of oral intake/ malnutrition, prolonged ICU and hospital length of stay, decreased quality of life, and increased mortality. Conventional therapeutic approaches are limited. Pharyngeal electrical stimulation (PES) was previously shown to improve swallowing function and airway safety in severely dysphagic tracheostomised stroke patients. METHODS In a multi-center, single-blind, 1:1 randomized controlled study, up to 400 (360 evaluable) mixed emergency adult ICU patients with recent extubation following mechanical ventilation and confirmed oropharyngeal dysphagia will be enrolled at investigational academic ICUs. Primary objective is to evaluate the effectiveness of PES in reducing the severity of unsafe swallows. Patients will be randomized to receive PES (or sham) treatment on 3 consecutive days in addition to best supportive care. Primary endpoint is a composite of 2 endpoints with hierarchy based on clinical priorities: DISCUSSION:: This study will evaluate the effects of PES on swallowing safety in critically ill ICU patients post mechanical ventilation with oropharyngeal dysphagia.
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Affiliation(s)
- Joerg C. Schefold
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Minna Bäcklund
- Department of Intensive Care Medicine, Meilahti Tower Hospital, Helsinki University Hospital
| | - Tero Ala-Kokko
- Department of Intensive Care Medicine, Oulu University Hospital, Finland
| | - Patrick Zuercher
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | | | - Satish Mistry
- Department for Clinical Research, Phagenesis Limited, Manchester Science Park, Manchester, United Kingdom
| | | | - Rainer Dziewas
- Department of Neurology, University Hospital Münster, Münster, Germany
| | - Jan Bakker
- Department Pulmonology and Critical Care. NYU Langone and Columbia University Medical Center New York, USA and Department Intensive Care Adults, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Stephan M. Jakob
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
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Mousa M, Sommer JU, Maurer JT. Reflex swallowing elicited by electrical stimulation in obstructive sleep apnea patients: A preliminary study. Respir Physiol Neurobiol 2019; 274:103351. [PMID: 31751667 DOI: 10.1016/j.resp.2019.103351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/09/2019] [Accepted: 11/17/2019] [Indexed: 11/17/2022]
Abstract
This study tested whether electrical stimulation of the pharyngeal mucosa is able to induce reliably the swallowing reflex in awake and asleep obstructive sleep apnea (OSA) patients, and whether the induced reflexes affect the sleep variables. In addition, the latency, occurrence, and morphology of swallows were evaluated. Eight patients received an esophageal catheter that was used on three consecutive nights for electrical stimulation and manometric recordings. The electrical stimulation proved itself safe, but its efficiency in inducing swallows sank from 80.0 % in awake to 37.4 % in sleeping subjects and was lowest in the sleep stage N3. The swallowing reflex was triggered with a mean latency of 3.69 ± 0.70 s, was predominantly induced in the hyperventilation phase, and had no significant effect on the subject's sleep variables. These findings indicate that electrical stimulation can more effectively trigger the swallowing reflex while the subjects are awake than during sleep without showing remarkable clinical benefits in terms of apnea-hypopnea index (AHI) improvement.
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Affiliation(s)
- Mohammed Mousa
- Institute of Embedded Systems, Mannheim University of Applied Sciences, Mannheim, Germany.
| | - J Ulrich Sommer
- University Hospital Mannheim, Department of Otorhinolaryngology, Mannheim, Germany.
| | - Joachim T Maurer
- University Hospital Mannheim, Department of Otorhinolaryngology, Mannheim, Germany.
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23
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Tomsen N, Ortega O, Rofes L, Arreola V, Martin A, Mundet L, Clavé P. Acute and subacute effects of oropharyngeal sensory stimulation with TRPV1 agonists in older patients with oropharyngeal dysphagia: a biomechanical and neurophysiological randomized pilot study. Therap Adv Gastroenterol 2019; 12:1756284819842043. [PMID: 31068978 PMCID: PMC6492367 DOI: 10.1177/1756284819842043] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 03/12/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Older people with oropharyngeal dysphagia (OD) present a decline in pharyngeal sensory function. The aim of this proof-of-concept study was to assess the biomechanical and neurophysiological effects of acute and subacute oropharyngeal sensory stimulation with transient receptor potential vanilloid 1 (TRPV1) agonists (capsaicinoids) in older patients with OD. METHODS We studied the effect of a single dose versus multiple doses (2 weeks) of oral capsaicin treatment (10-5 M) or placebo in 28 older patients with OD (81.2 ± 4.6 years) using videofluoroscopy (penetration-aspiration scale [PAS], timing of swallow response) and electroencephalography (EEG) (latency and amplitude of pharyngeal event-related potential [ERP]). RESULTS Acute stimulation by capsaicinoids 10-5 M did not improve swallow function and did not produce significant changes in pharyngeal ERP. In contrast, after 10 days of treatment, patients presented a clinically relevant and statistically significant reduction in the laryngeal vestibule closure (LVC) time (22.5%, p = 0.042), and in the PAS (24.2%, p = 0.038), compared with the placebo group. EEG results showed a reduction in the latency of the N1 peak (28.6%, p = 0.007) and an increase of the amplitude of the P1-N2 (59.4%, p = 0.038) and the N2-P2 (43.6%, p = 0.050) peaks. We observed a strong and significant correlation between the reduction in the latency of the N1 peak and change in LVC time after subacute treatment (r = 0.750, p = 0.003). CONCLUSIONS After 2 weeks of treatment, oropharyngeal sensory stimulation with capsaicinoids induced cortical changes that were correlated with improvements in swallowing biomechanics in older patients with OD. These results further show that sensory stimulation by TRPV1 agonists can become a useful pharmacological treatment for older patients with OD.
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Affiliation(s)
- Noemí Tomsen
- Laboratori de Fisiologia Digestiva CIBERehd
CSdM-UAB, Hospital de Mataró, Barcelona, Spain
- Centro de Investigación Biomédica en Red de
enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos
III, Barcelona, Spain
| | - Omar Ortega
- Laboratori de Fisiologia Digestiva CIBERehd
CSdM-UAB, Hospital de Mataró, Barcelona, Spain
- Centro de Investigación Biomédica en Red de
enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos
III, Barcelona, Spain
| | - Laia Rofes
- Centro de Investigación Biomédica en Red de
enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos
III, Barcelona, Spain
| | - Viridiana Arreola
- Laboratori de Fisiologia Digestiva CIBERehd
CSdM-UAB, Hospital de Mataró, Barcelona, Spain
| | - Alberto Martin
- Laboratori de Fisiologia Digestiva CIBERehd
CSdM-UAB, Hospital de Mataró, Barcelona, Spain
| | - Lluís Mundet
- Laboratori de Fisiologia Digestiva CIBERehd
CSdM-UAB, Hospital de Mataró, Barcelona, Spain
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24
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Zuercher P, Moret CS, Dziewas R, Schefold JC. Dysphagia in the intensive care unit: epidemiology, mechanisms, and clinical management. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2019; 23:103. [PMID: 30922363 PMCID: PMC6438038 DOI: 10.1186/s13054-019-2400-2] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 03/18/2019] [Indexed: 12/14/2022]
Abstract
Dysphagia may present in all critically ill patients and large-scale clinical data show that e.g. post-extubation dysphagia (PED) is commonly observed in intensive care unit (ICU) patients. Recent data demonstrate that dysphagia is mostly persisting and that its presence is independently associated with adverse patient-centered clinical outcomes. Although several risk factors possibly contributing to dysphagia development were proposed, the underlying exact mechanisms in ICU patients remain incompletely understood and no current consensus exists on how to best approach ICU patients at risk.From a clinical perspective, dysphagia is well-known to be associated with an increased risk of aspiration and aspiration-induced pneumonia, delayed resumption of oral intake/malnutrition, decreased quality of life, prolonged ICU and hospital length of stay, and increased morbidity and mortality. Moreover, the economic burden on public health care systems is high.In light of high mortality rates associated with the presence of dysphagia and the observation that dysphagia is not systematically screened for on most ICUs, this review describes epidemiology, terminology, and potential mechanisms of dysphagia on the ICU. Furthermore, the impact of dysphagia on affected individuals, health care systems, and society is discussed in addition to current and future potential therapeutic approaches.
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Affiliation(s)
- Patrick Zuercher
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, CH, Switzerland.
| | - Céline S Moret
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, CH, Switzerland
| | - Rainer Dziewas
- Department of Neurology, University Hospital Münster, Münster, Germany
| | - Joerg C Schefold
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, CH, Switzerland
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Abstract
PURPOSE OF REVIEW The review summarizes current knowledge and recent findings about how to practically apply medication in patients with dysphagia and how swallowing function may be positively or negatively affected by drugs. RECENT FINDINGS Oropharyngeal dysphagia is a major health problem in older persons and was recently classified as a geriatric syndrome. Although the knowledge about an effective diagnostic approach increased during the last years, comparatively little is known about how to effectively manage and treat dysphagia and hardly anything is implemented in clinical routine. Studies have shown a considerable lack of knowledge about the adequate modification of medication and demonstrated an increased rate of practical medication errors in patients with dysphagia. With regard to dysphagia therapy, two systematic reviews have identified neuroleptics as potentially harmful for swallowing function. The role of other candidates is controversial. Contrary to this, some pharmacological approaches may be future options for the treatment of dysphagia, with capsaicin currently being the most evaluated and potential one. SUMMARY More professional training and advice about the adequate management of medication in dysphagic patients is necessary for all healthcare professionals. Large observational and interventional studies are needed to identify and confirm the influence of pharmacological substances on the swallowing function.
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Affiliation(s)
- Rainer Wirth
- Department for Geriatric Medicine, Marien Hospital Herne, University Hospital Bochum, Herne
| | - Rainer Dziewas
- Department of Neurology, University Hospital Münster, Münster, Germany
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26
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Neurophysiological Adaptation and Neuromodulatory Treatment Approaches in Patients Suffering from Post-stroke Dysphagia. CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2018. [DOI: 10.1007/s40141-018-0201-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Alvarez-Berdugo D, Rofes L, Casamitjana JF, Enrique A, Chamizo J, Viña C, Pollán CM, Clavé P. TRPM8, ASIC1, and ASIC3 localization and expression in the human oropharynx. Neurogastroenterol Motil 2018; 30:e13398. [PMID: 29971861 DOI: 10.1111/nmo.13398] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/24/2018] [Indexed: 12/06/2022]
Abstract
BACKGROUND Oropharyngeal dysphagia (OD) is a prevalent disease with poor prognosis among older people and has no pharmacological treatment. Polymodal sensory receptors like the TRP or ASIC family receptors are potential targets to treat OD. TRPM8 agonists and acidic solutions can improve the swallow response in patients with OD, but little is known about the expression of TRPM8, ASIC1, and ASIC3 in the human oropharynx. The aim of this study was to assess the expression and localization of TRPM8, ASIC1, and ASIC3 in human samples of the oropharynx to lay the basis for new pharmacological treatments for OD. METHODS Pathology-free samples from oropharyngeal regions innervated by cranial nerves V, IX, and X were obtained during major ENT surgery and processed to obtain mRNA (20 patients) or to be used in immunohistochemical assays (12 patients). TRPM8, ASIC1, and ASIC3 expression and localization were studied with RT-qPCR and fluorescent immunohistochemistry. KEY RESULTS ASIC3 was expressed in the 3 regions studied with similar levels and was localized on sensory fibers innervating the mucosa below the basal lamina of all studied regions. TRPM8 was also co-localized on the sensory fibers innervating the mucosa below the basal lamina of all studied regions. In contrast, ASIC1 was only found in the nerves innervating the tongue muscular fibers. CONCLUSIONS & INFERENCES TRPM8 and ASIC3 are found on submucosal sensory nerves in the human oropharynx. Our study lays the basis to use oropharyngeal TRPM8 and ASIC3 receptors as therapeutic targets to develop new active pharmacological treatments for OD patients.
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Affiliation(s)
- D Alvarez-Berdugo
- Gastrointestinal Motility Laboratory, Hospital de Mataró, Consorci Sanitari del Maresme, Mataró, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Instituto de Salud Carlos III, Barcelona, Spain
| | - L Rofes
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Instituto de Salud Carlos III, Barcelona, Spain
| | - J F Casamitjana
- ENT Department, Hospital de Mataró, Consorci Sanitari del Maresme, Mataró, Spain
| | - A Enrique
- ENT Department, Hospital de Mataró, Consorci Sanitari del Maresme, Mataró, Spain
| | - J Chamizo
- ENT Department, Hospital de Mataró, Consorci Sanitari del Maresme, Mataró, Spain
| | - C Viña
- ENT Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - C M Pollán
- ENT Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - P Clavé
- Gastrointestinal Motility Laboratory, Hospital de Mataró, Consorci Sanitari del Maresme, Mataró, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Instituto de Salud Carlos III, Barcelona, Spain.,Fundació Institut de Investigació Germans Trias i Pujol, Badalona, Spain
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28
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Miarons M, Tomsen N, Nascimento W, Espín À, López-Faixó D, Clavé P, Rofes L. Increased levels of substance P in patients taking beta-blockers are linked with a protective effect on oropharyngeal dysphagia. Neurogastroenterol Motil 2018; 30:e13397. [PMID: 30043538 DOI: 10.1111/nmo.13397] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 05/23/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND We have recently found a potential protective effect of beta-blockers on oropharyngeal dysphagia (OD). The action mechanism by which beta-blockers could wield this protective effect is unknown, but the neurotransmitter substance P (SP) could play a key role. The aim of this study was to analyze serum and saliva SP levels in patients taking beta-blockers (TBB), and to explore its relationship with OD. METHODS Adult (>50 year) patients TBB were randomly recruited from the primary care setting and 1:1 matched by age, sex, and Barthel Index (BI) with patients not taking beta-blockers (NTBB). Serum and saliva samples were taken and analyzed for their SP levels using an enzyme-linked immunosorbent assay (ELISA). Socio-demographic and clinical variables were collected. Dysphagia was evaluated in all patients using the clinical volume-viscosity swallow test (V-VST). KEY RESULTS We studied 28 patients TBB (64.96 ± 7.31 years, 57.1% women, BI 99.6 ± 1.31, carvedilol-equivalent dose 24.11 ± 18.12 mg) and 28 patients NTBB (65.61 ± 6.43 years, 57.1% women, BI 99.6 ± 1.31). SP serum levels were significantly higher in patients TBB (260.68 ± 144.27 vs 175.46 ± 108.36 pg/mL, P = .009) as were SP saliva levels (170.34 ± 146.48 vs 102.73 ± 52.28 pg/mL, P < .001) compared with patients NTBB. The prevalence of OD was 32.1% in patients TBB and 67.9% in patients NTBB (P = .015). Moreover, patients with OD had significantly lower SP saliva levels in comparison with patients without clinical signs of OD (98.39 ± 43.25 vs 174.69 ± 147.21 pg/mL) P < .001. CONCLUSIONS & INFERENCES We have found that serum and saliva SP levels are greater in patients TBB. This increase in SP levels could be the action mechanism by which beta-blockers protect patients from OD.
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Affiliation(s)
- M Miarons
- Department of Pharmacy, Hospital de Mataró, Mataró, Spain
| | - N Tomsen
- Unitat d'Exploracions Funcionals Digestives, Department of Surgery, Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Spain
| | - W Nascimento
- Unitat d'Exploracions Funcionals Digestives, Department of Surgery, Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Spain
| | - À Espín
- Unitat d'Exploracions Funcionals Digestives, Department of Surgery, Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Spain
| | - D López-Faixó
- Department of Pharmacy, Hospital de Mataró, Mataró, Spain
| | - P Clavé
- Unitat d'Exploracions Funcionals Digestives, Department of Surgery, Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Spain.,Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Barcelona, Spain
| | - L Rofes
- Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Instituto de Salud Carlos III, Barcelona, Spain
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Dziewas R, Stellato R, van der Tweel I, Walther E, Werner CJ, Braun T, Citerio G, Jandl M, Friedrichs M, Nötzel K, Vosko MR, Mistry S, Hamdy S, McGowan S, Warnecke T, Zwittag P, Bath PM. Pharyngeal electrical stimulation for early decannulation in tracheotomised patients with neurogenic dysphagia after stroke (PHAST-TRAC): a prospective, single-blinded, randomised trial. Lancet Neurol 2018; 17:849-859. [PMID: 30170898 DOI: 10.1016/s1474-4422(18)30255-2] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 06/18/2018] [Accepted: 06/28/2018] [Indexed: 01/27/2023]
Abstract
BACKGROUND Dysphagia after stroke is common, especially in severely affected patients who have had a tracheotomy. In a pilot trial, pharyngeal electrical stimulation (PES) improved swallowing function in this group of patients. We aimed to replicate and extend this single-centre experience. METHODS We did a prospective, single-blind, randomised controlled trial across nine sites (seven acute care hospitals, two rehabilitation facilities) in Germany, Austria, and Italy. Patients with recent stroke who required tracheotomy were randomly assigned to receive 3 days of either PES or sham treatment (1:1). All patients had the stimulation catheter inserted; sham treatment was applied by connecting the PES base station to a simulator box instead of the catheter. Randomisation was done via a computerised interactive system (stratified by site) in blocks of four patients per site. Patients and investigators applying PES were not masked. The primary endpoint was assessed by a separate investigator at each site who was masked to treatment assignment. The primary outcome was readiness for decannulation 24-72 h after treatment, assessed using fibreoptic endoscopic evaluation of swallowing and based on a standardised protocol, including absence of massive pooling of saliva, presence of one or more spontaneous swallows, and presence of at least minimum laryngeal sensation. We planned a sequential statistical analysis of superiority for the primary endpoint. Interim analyses were to be done after primary outcome data were available for 50 patients (futility), 70 patients, and every additional ten patients thereafter, up to 140 patients. Analysis was by intention to treat. This trial is registered with the ISRCTN registry, number ISRCTN18137204. FINDINGS From May 29, 2015, to July 5, 2017, of 81 patients assessed, 69 patients from nine sites were randomly assigned to receive PES (n=35) or sham (n=34) treatment. Median onset to randomisation time was 28 days (IQR 19-41; PES 28 [20-49]; sham 28 [18-40]). The Independent Data and Safety Monitoring Board recommended that the trial was stopped early for efficacy after 70 patients had been recruited and primary endpoint data for 69 patients were available. This decision was approved by the steering committee. More patients were ready for decannulation in the PES group (17 [49%] of 35 patients) than in the sham group (three [9%] of 34 patients; odds ratio [OR] 7·00 [95% CI 2·41-19·88]; p=0·0008). Adverse events were reported in 24 (69%) patients in the PES group and 24 (71%) patients in the sham group. The number of patients with at least one serious adverse event did not differ between the groups (ten [29%] patients in the PES group vs eight [23%] patients in the sham group; OR 1·30 [0·44-3·83]; p=0·7851). Seven (20%) patients in the PES group and three (9%) patients in the sham group died during the study period (OR 2·58 [0·61-10·97]; p=0·3059). None of the deaths or serious adverse events were judged to be related to PES. INTERPRETATION In patients with stroke and subsequent tracheotomy, PES increased the proportion of patients who were ready for decannulation in this study population, many of whom received PES within a month of their stroke. Future trials should confirm whether PES is beneficial in tracheotomised patients who receive stimulation similarly early after stroke and explore its effects in other cohorts. FUNDING Phagenesis Ltd.
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Affiliation(s)
- Rainer Dziewas
- Department of Neurology, University Hospital Münster, Münster, Germany.
| | - Rebecca Stellato
- Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Ingeborg van der Tweel
- Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Ernst Walther
- Zentrum für Neurologie und Neurorehabilitation, Schön Klinik Hamburg Eilbek, Hamburg, Germany
| | - Cornelius J Werner
- Section Interdisciplinary Geriatrics, Department of Neurology, University Hospital RWTH Aachen University, Aachen, Germany
| | - Tobias Braun
- Neurologische Klinik, University Hospital Giessen and Marburg GmbH, Giessen, Germany
| | - Giuseppe Citerio
- School of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy; Neurointensive Care, San Gerardo Hospital, ASST-Monza, Italy
| | - Mitja Jandl
- Isar-Amper-Klinikum, Klinikum München Ost, Haar, Germany
| | | | - Katja Nötzel
- Neurologie, Vivantes Klinikum Neukölln, Berlin, Germany
| | - Milan R Vosko
- Klinik für Neurologie 2, Kepler Universitäts Klinikum, Linz, Austria
| | - Satish Mistry
- Department for Clinical Research, Phagenesis Limited, Manchester, UK
| | - Shaheen Hamdy
- Centre for Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester and the Manchester Academic Health Sciences Centre, Manchester, UK
| | - Susan McGowan
- National Hospital for Neurology and Neurosurgery, Therapy and Rehabilitation Services London, London, UK
| | - Tobias Warnecke
- Department of Neurology, University Hospital Münster, Münster, Germany
| | - Paul Zwittag
- Klinik für Hals- Nasen- und Ohrenheilkunde, Kepler Universitäts Klinikum, Linz, Austria
| | - Philip M Bath
- Stroke Trials Unit, Division of Clinical Neuroscience, University of Nottingham, Nottingham, UK
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Direct and Indirect Therapy: Neurostimulation for the Treatment of Dysphagia After Stroke. Dysphagia 2018. [DOI: 10.1007/174_2017_147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Relationship Between Frequency of Spontaneous Swallowing and Salivary Substance P Level in Patients with Acute Stroke. Dysphagia 2017; 33:414-418. [PMID: 29185035 DOI: 10.1007/s00455-017-9867-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
Abstract
The frequency of spontaneous swallowing is useful for screening of dysphagia in acute stroke. Low levels of substance P (SP) in saliva attenuate the swallowing reflex. The aim of this study was to determine the relationship between the frequency of spontaneous swallowing and salivary SP levels. In 40 subjects, saliva was collected within 72 h after stroke onset and salivary SP levels were measured using ELISA kit at a later date. The frequency of spontaneous swallowing was measured over 1 h using a microphone placed on the neck. Pneumonia was diagnosed by the presence of pyrexia and at least two respiratory problems of four categories (sputum, cough or breathing pattern, breath sound, and gas change). The presence of detectable levels of SP in the saliva was confirmed in 17 patients (high SP group), whereas the level was below the detection limit of the ELISA kit in 23 patients (low SP group). The frequency of spontaneous swallowing was significantly lower in low SP group (16.1 ± 11.6 per hour) than in the high SP group (30.4 ± 20.4, p = 0.016). As the result of multiple regression analysis, salivary SP levels were correlated with frequency of spontaneous swallowing independently of age, NIHSS, and GCS. The incidence of pneumonia was significantly higher in the low than high SP group (p < 0.001). In conclusion, the frequency of spontaneous swallowing was decreased in acute stroke patients with low salivary SP levels. Salivary SP levels can be potentially a useful biomarker of risk of stroke-associated pneumonia in the acute stage.
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Marian T, Schröder JB, Muhle P, Claus I, Riecker A, Warnecke T, Suntrup-Krueger S, Dziewas R. Pharyngolaryngeal Sensory Deficits in Patients with Middle Cerebral Artery Infarction: Lateralization and Relation to Overall Dysphagia Severity. Cerebrovasc Dis Extra 2017; 7:130-139. [PMID: 28972945 PMCID: PMC5730110 DOI: 10.1159/000479483] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/06/2017] [Indexed: 12/16/2022] Open
Abstract
Background Dysphagia is a frequent and dangerous complication of acute stroke. Apart from a well-timed oropharyngeal muscular contraction pattern, sensory feedback is of utmost importance for safe and efficient swallowing. In the present study, we therefore analyzed the relation between pharyngolaryngeal sensory deficits and post-stroke dysphagia (PSD) severity in a cohort of acute stroke patients with middle cerebral artery (MCA) infarction. Methods Eighty-four first-ever MCA stroke patients (41 left, 43 right) were included in this trial. In all patients, fiberoptic endoscopic evaluation of swallowing (FEES) was performed according to a standardized protocol within 96 h after stroke onset. PSD was classified according to the 6-point fiberoptic endoscopic dysphagia severity scale. Pharyngolaryngeal sensation was semi-quantitatively evaluated by a FEES-based touch technique. Results PSD severity was closely related to the pharyngolaryngeal sensory deficit. With regards to lateralization of the sensory deficit, there was a slight but significant preponderance of sensory loss contralateral to the side of stroke. Apart from that, right hemispheric stroke patients were found to present with a more severe PSD. Conclusions This study provides evidence that an intact sensory feedback is of utmost importance to perform nonimpaired swallowing and highlights the key role of disturbed pharyngeal and laryngeal afferents in the pathophysiology of PSD.
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Affiliation(s)
- Thomas Marian
- Department of Neurology, University Hospital Münster, Münster, Germany
| | | | - Paul Muhle
- Department of Neurology, University Hospital Münster, Münster, Germany
| | - Inga Claus
- Department of Neurology, University Hospital Münster, Münster, Germany
| | - Axel Riecker
- Neurological/Neurosurgical Rehabilitation Clinic, RehaNova, Cologne, Germany
| | - Tobias Warnecke
- Department of Neurology, University Hospital Münster, Münster, Germany
| | | | - Rainer Dziewas
- Department of Neurology, University Hospital Münster, Münster, Germany
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Abstract
Changes to swallowing affect most people with Parkinson's disease (PD). Changes may not initially exercise a decisive impact, but can later pose significant threats to nutritional, hydration and respiratory health and psychosocial quality of life. This review, from a largely clinical viewpoint, outlines the nature of changes in PD and considers the issue of how many people are affected and in what ways. It outlines main approaches to assessment and management, with an emphasis on aspects relevant to PD. Dysphagia contributes to drooling in PD. The review therefore also touches on the nature and management of this condition that has its own set of health and psychosocial quality-of-life issues.
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Affiliation(s)
- Nick Miller
- Newcastle University Institute for Ageing, Speech & Language Sciences, George VI Building, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
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