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Kim SH, Hong CH, Shin MJ, Kim KU, Park TS, Park JY, Shin YB. Prevalence and clinical characteristics of Sarcopenia in older adult patients with stable chronic obstructive pulmonary disease: a cross-sectional and follow-up study. BMC Pulm Med 2024; 24:219. [PMID: 38698380 PMCID: PMC11067242 DOI: 10.1186/s12890-024-03034-5] [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: 11/14/2023] [Accepted: 04/23/2024] [Indexed: 05/05/2024] Open
Abstract
BACKGROUND The relationship between sarcopenia and chronic obstructive pulmonary disease (COPD) has been increasingly reported, and there is some overlap regarding their clinical features and pulmonary rehabilitation (PR) strategies. No Korean study has reported the actual prevalence of sarcopenia in patients with stable COPD who are recommended for pulmonary rehabilitation. This study evaluated the prevalence and clinical features of sarcopenia in older adult outpatients with stable COPD and the changes after 6 months. METHODS In this cross-sectional and 6-month follow-up study, we recruited 63 males aged ≥ 65 diagnosed with stable COPD. Sarcopenia was diagnosed using the AWGS 2019 criteria, which included hand grip strength testing, bioelectrical impedance analysis, Short Physical Performance Battery administration, and Strength, Assistance with walking, Rising from a chair, Climbing stairs, and Falling screening tool administration. A 6-minute walk test (6 MWT) was conducted, forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), maximal inspiratory and expiratory pressures (MIP and MEP, respectively) and peak expiratory flow (PEF) were assessed, and patient-reported questionnaires were administered. RESULTS At baseline, 14 (22%) patients were diagnosed with possible sarcopenia, and eight (12.6%) were diagnosed with sarcopenia. There were significant differences in the age; body mass index; Body mass index, airflow Obstruction, Dyspnea, and Exercise index; modified Medical Research Council dyspnea scores; and International Physical Activity Questionnaire scores between the normal and sarcopenia groups. Whole-body phase angle, MIP, MEP, PEF, and 6-minute walk distance (6 MWD) also showed significant differences. Over 6 months, the proportion of patients with a reduced FEV1 increased; however, the proportion of patients with sarcopenia did not increase. CONCLUSION A relatively low prevalence of sarcopenia was observed in older adult outpatients with stable COPD. No significant change in the prevalence of sarcopenia was found during the 6-month follow-up period. TRIAL REGISTRATION The study was registered with the Clinical Research Information Service (KCT0006720). Registration date: 30/07/2021.
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Affiliation(s)
- Sang Hun Kim
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Cho Hui Hong
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Physical Therapy, Graduate School, Kyungsung University, Busan, Republic of Korea
| | - Myung-Jun Shin
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Ki Uk Kim
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Tae Sung Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Jun Yong Park
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Yong Beom Shin
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea.
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Kim SH, Shin MJ, Lee JM, Huh S, Shin YB. Effects of a new respiratory muscle training device in community-dwelling elderly men: an open-label, randomized, non-inferiority trial. BMC Geriatr 2022; 22:155. [PMID: 35209851 PMCID: PMC8869348 DOI: 10.1186/s12877-022-02828-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background Respiratory muscle training (RMT) has various clinical benefits in older adults; however, the low adherence to training remains a challenging issue. The present study aimed to confirm the efficacy of a new device that combines inspiratory muscle training and a positive expiratory pressure (IMT/PEP) compared to that of a Threshold IMT device (Philips Respironics Inc), and to determine whether home-based training differed from rehabilitation center training. Methods This four-arm, multicenter, parallel, non-inferiority trial randomized 80 active community-dwelling older men (mean age = 72.93 ± 5.02 years) to center-based groups (new IMT/PEP device or Threshold IMT device; 16 supervised sessions) or home-based groups (new IMT/PEP device or Threshold IMT device; 2 supervised sessions and individual sessions). Participants in all groups performed RMT twice a day for 8 weeks. Assessments were performed at baseline and post-training. The primary outcomes were maximum inspiratory pressure and maximal expiratory pressure. The secondary outcomes included forced vital capacity and forced expiratory volume in the first second, peak cough flow, diaphragm thickness, VO2 peak, the International Physical Activity Questionnaire score, electromyographic activities of the sternocleidomastoid muscle, and skeletal muscle mass and phase angle as measured by bioimpedance analysis. In addition, rates of adherence to each protocol were also compared. Results Among all groups, the maximal inspiratory pressure was improved post-training, while the maximal expiratory pressure showed improvement only in the IMT/PEP groups. The overall non-inferiority of the IMT/PEP device was thus validated. A statistically significant improvement in diaphragm thickness was found. However, no consistent improvement was shown in other secondary outcomes. No significant difference in training adherence rate between protocols was observed (mean adherence rate of 91–99%). Conclusion Compared to the Threshold IMT, the new IMT/PEP device did not result in a significant difference in maximal inspiratory pressure but did improve maximal expiratory pressure in older men. The IMT/PEP device’s improved usability, which is associated with exercise adherence, provided distinct advantages in this cohort. If proper education is first provided, home-based RMT alone may provide sufficient effects in older individuals. Trial registration This trial was registered in the database cris.nih.go.kr (registration number KCT0003901) on 10/05/2019.
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Affiliation(s)
- Sang Hun Kim
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Myung-Jun Shin
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Jang Mi Lee
- Busan Center for infectious Disease Control and Prevention, Pusan National University Hospital, Busan, Republic of Korea
| | - Sungchul Huh
- Department of Rehabilitation Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Yong Beom Shin
- Department of Rehabilitation Medicine, Biomedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea.
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McGarvey L, Rubin BK, Ebihara S, Hegland K, Rivet A, Irwin RS, Bolser DC, Chang AB, Gibson PG, Mazzone SB. Global Physiology and Pathophysiology of Cough: Part 2. Demographic and Clinical Considerations: CHEST Expert Panel Report. Chest 2021; 160:1413-1423. [PMID: 33905678 PMCID: PMC8692102 DOI: 10.1016/j.chest.2021.04.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Cough characteristics vary between patients, and this can impact clinical diagnosis and care. The purpose of part two of this state-of-the-art review is to update the American College of Chest Physicians (CHEST) 2006 guideline on global physiology and pathophysiology of cough. STUDY DESIGN AND METHODS A review of the literature was conducted using PubMed and MEDLINE databases from 1951 to 2019 using prespecified search terms. RESULTS We describe the demographics of typical patients with cough in the clinical setting, including how cough characteristics change across age. We summarize the effect of common clinical conditions impacting cough mechanics and the physical properties of mucus on airway clearance. INTERPRETATION This is the second of a two-part update to the 2006 CHEST cough guideline; it complements part one on basic phenomenology of cough by providing an extended clinical picture of cough along with the factors that alter cough mechanics and efficiency in patients. A greater understanding of the physiology and pathophysiology of cough will improve clinical management.
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Affiliation(s)
- Lorcan McGarvey
- Wellcome-Wolfson Institute of Experimental Medicine, Queen's University Belfast, Belfast, Northern Ireland.
| | - Bruce K Rubin
- Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, VA
| | - Satoru Ebihara
- Department of Internal Medicine and Rehabilitation Science, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Rehabilitation Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Karen Hegland
- Department of Speech, Language and Hearing Sciences, University of Florida, Gainesville, FL
| | - Alycia Rivet
- Department of Speech, Language and Hearing Sciences, University of Florida, Gainesville, FL
| | - Richard S Irwin
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Massachusetts Medical School and UMass Memorial Medical Center, Worcester, MA
| | - Donald C Bolser
- Department of Physiological Sciences, University of Florida, Gainesville, FL
| | - Anne B Chang
- Division of Child Health, Menzies School of Health Research, Darwin, NT, Australia; Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Queensland's University of Technology, Brisbane, QLD, Australia
| | - Peter G Gibson
- Hunter Medical Research Institute, Newcastle, NSW, Australia; Department of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, NSW, Australia
| | - Stuart B Mazzone
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, VIC, Australia
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Wallace E, Macrae P, Huckabee ML. Objective measurement of acoustic intensity of coughing for clearance of penetration and aspiration on video-fluoroscopy. INTERNATIONAL JOURNAL OF SPEECH-LANGUAGE PATHOLOGY 2021; 23:313-320. [PMID: 32664756 DOI: 10.1080/17549507.2020.1784280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
PURPOSE This preliminary, exploratory study evaluated the acoustic intensity of effective and ineffective clearance of penetrated and aspirated material from the laryngeal vestibule in patients with dysphagia. METHOD A lapel microphone was attached anterior to participants' tragus and recorded coughing in decibels during their videofluoroscopic swallowing studies (VFSS). RESULT Eighty-eight patients were recruited. Thirteen patients, with visible airway invasion and coughing were included in the final analysis. No coughs were effective at expelling aspirated material from the airway (n = 10). Both effective (4/7) and ineffective (3/7) coughing to penetration were recorded. The mean acoustic intensity of effective coughing to penetration was -44.0 dBFS (decibel level relative to full scale) [SD = 7.3, 95% CI = -51.14, -36.86], and ineffective coughing to penetration was only marginally lower at -42.9 dBFS [SD = 2.0, 95% CI = -45.21, -40.59]. CONCLUSION No coughs were effective at expelling aspirated material from the airway. Some coughs effectively expelled penetrated material from the airway. However, the relationship between acoustic intensity and cough effectiveness is unclear due to the limited number of observations. Given that perceptual evaluation of coughing is widely used in dysphagia clinical practice to determine cough effectiveness, this is an important area for future research.
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Affiliation(s)
- Emma Wallace
- Department of Communication Disorders, Rose Centre for Stroke Recovery and Research, University of Canterbury, Christchurch, New Zealand
| | - Phoebe Macrae
- Department of Communication Disorders, Rose Centre for Stroke Recovery and Research, University of Canterbury, Christchurch, New Zealand
| | - Maggie-Lee Huckabee
- Department of Communication Disorders, Rose Centre for Stroke Recovery and Research, University of Canterbury, Christchurch, New Zealand
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McMahon L, Blake C, Lennon O. Nonpharmacological interventions for respiratory health in Parkinson's disease: A systematic review and meta-analysis. Eur J Neurol 2021; 28:1022-1040. [PMID: 33098349 DOI: 10.1111/ene.14605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/15/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Respiratory dysfunction in Parkinson's disease (PD) is often an underdiagnosed and untreated impairment associated with the disease. Clinically, a reactive approach to respiratory morbidity is taken, rather than preventative approaches that address underlying impairment/s. This systematic review identifies the current evidence to support nonpharmacological interventions to improve respiratory impairments in individuals with PD. METHODS The relevant literature was searched using a customised and systematic strategy. Randomised and nonrandomised control trials of nonpharmacological interventions targeting respiratory outcome measures in PD were included. Outcomes of interest were respiratory morbidity and mortality, respiratory muscle strength, spirometry measures, lung volumes, peak cough flow, and perception of dyspnoea. RESULTS Nonpharmacological interventions included: functional training, generalised strength training, respiratory muscle strength training, aerobic exercise, qigong, yoga, breath stacking, incentive spirometry and singing. Methodological quality of included studies varied. Meta-analyses of nonpharmacological interventions demonstrated significant effects for inspiratory muscle strength (mean difference [MD] 19.68; confidence interval [CI] 8.49, 30.87; z = 3.45; p = 0.0006; I2 = 2%), expiratory muscle strength (MD 18.97; CI 7.79, 30.14; z = 3.33; p = 0.0009; I2 = 23%) and peak expiratory flow (MD 72.21; CI 31.19, 113.24; z = 3.45; p = 0.0006; I2 = 0%). Best-evidence synthesis identified level 1 evidence supporting nonpharmacological interventions for improving peak cough flow and perceived dyspnoea. No studies were identified reporting outcomes of respiratory rate, inspiration:expiration ratio or respiratory morbidity or mortality in PD. CONCLUSIONS Nonpharmacological interventions improved respiratory muscle strength and peak expiratory flow in PD. Additional trials targeting respiratory dysfunction and longitudinal studies examining the relationship between respiratory dysfunction and morbidity and mortality rates in PD are required.
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Affiliation(s)
- L McMahon
- UCD School of Public Health, Physiotherapy and Population Science, Health Sciences Centre, University College Dublin, Dublin, Ireland
| | - C Blake
- UCD School of Public Health, Physiotherapy and Population Science, Health Sciences Centre, University College Dublin, Dublin, Ireland
| | - O Lennon
- UCD School of Public Health, Physiotherapy and Population Science, Health Sciences Centre, University College Dublin, Dublin, Ireland
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Wallace E, Guiu Hernandez E, Ang A, Hiew S, Macrae P. A systematic review of methods of citric acid cough reflex testing. Pulm Pharmacol Ther 2019; 58:101827. [PMID: 31326628 DOI: 10.1016/j.pupt.2019.101827] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/16/2019] [Accepted: 07/17/2019] [Indexed: 12/12/2022]
Abstract
INTRODUCTION This systematic review summarises and appraises methods of citric acid cough reflex testing (CRT) documented in published literature. METHODS Electronic databases, MEDLINE, EMBASE, CINAHL, PsychINFO, Scopus were searched up to and including 11th February 2018. Studies reporting a method of citric acid CRT, published in peer-reviewed journals in English or Spanish, were assessed for the inclusion criteria. Of the selected studies, information on the instrumentation and CRT protocol was extracted. RESULTS A total of 129 studies were included. Instrumentation and protocols differed widely across studies. Reporting of methods of citric acid CRT was sub-standard, with many crucial methodological components omitted from published manuscripts, preventing their full replication. CONCLUSIONS Considerable methodological variability exists for citric acid CRT in published literature. The findings suggest that caution is warranted in comparing citric acid cough thresholds across studies. Full replication of previously published methods of citric acid CRT is limited due to crucial elements of the citric acid CRT protocol being omitted from published manuscripts. These findings have implications on the use of citric acid CRT in clinical and pharmaceutical studies to evaluate the effects of antitussive medications and cough therapies.
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Affiliation(s)
- Emma Wallace
- University of Canterbury, Rose Centre for Stroke Recovery and Research, Dept of Communication Disorders, Christchurch, New Zealand.
| | - Esther Guiu Hernandez
- University of Canterbury, Rose Centre for Stroke Recovery and Research, Dept of Communication Disorders, Christchurch, New Zealand
| | - Alicia Ang
- University of Canterbury, Rose Centre for Stroke Recovery and Research, Dept of Communication Disorders, Christchurch, New Zealand
| | - Sarah Hiew
- University of Canterbury, Rose Centre for Stroke Recovery and Research, Dept of Communication Disorders, Christchurch, New Zealand
| | - Phoebe Macrae
- University of Canterbury, Rose Centre for Stroke Recovery and Research, Dept of Communication Disorders, Christchurch, New Zealand
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Yu KJ, Park D. Clinical characteristics of dysphagic stroke patients with salivary aspiration: A STROBE-compliant retrospective study. Medicine (Baltimore) 2019; 98:e14977. [PMID: 30896670 PMCID: PMC6708889 DOI: 10.1097/md.0000000000014977] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The aim of this study was to evaluate the correlation between radionuclide salivagram findings and clinical characteristics in stroke patient with swallowing difficulty.In this study, dysphagic stroke patients who had undergone both a radionuclide salivagram and videofluoroscopic swallowing study (VFSS) were included retrospectively. To evaluate the correlations between clinical parameters and salivary aspiration, clinical parameters, such as stroke lesion, the degree of paralysis, sex, age, onset duration of stroke, the score of the Mini-Mental State Examination (MMSE), the score of the Global Deterioration Scale (GDS), the total score of the Modified Barthel Index (MBI), and each sub-score of the MBI were collected and analyzed.In the results of this study, the MMSE score was the only significant parameter for predicting positive findings in a salivagram in a multivariate logistic regression analysis in patients with supratentorial stroke. In patients with infratentorial stroke, however, the transfer sub-score of MBI was the only significant parameter for predicting positive findings in a salivagram in a multivariate logistic regression analysis.In conclusion, care should be taken to prevent salivary aspiration when the MMSE score is less than eight in patients with supratentorial stroke, and the transfer sub-score of MBI score is less than three in patients with infratentorial stroke.
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Determining Peak Cough Flow Cutoff Values to Predict Aspiration Pneumonia Among Patients With Dysphagia Using the Citric Acid Reflexive Cough Test. Arch Phys Med Rehabil 2018; 99:2532-2539.e1. [DOI: 10.1016/j.apmr.2018.06.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/04/2018] [Accepted: 06/11/2018] [Indexed: 11/20/2022]
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Preliminary Evidence of Reduced Urge to Cough and Cough Response in Four Individuals following Remote Traumatic Brain Injury with Tracheostomy. Can Respir J 2016; 2016:6875210. [PMID: 27774033 PMCID: PMC5059551 DOI: 10.1155/2016/6875210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 08/24/2016] [Accepted: 08/30/2016] [Indexed: 12/14/2022] Open
Abstract
Cough and swallow protect the lungs and are frequently impaired following traumatic brain injury (TBI). This project examined cough response to inhaled capsaicin solution challenge in a cohort of four young adults with a history of TBI within the preceding five years. All participants had a history of tracheostomy with subsequent decannulation and dysphagia after their injuries (resolved for all but one participant). Urge to cough (UTC) and cough response were measured and compared to an existing database of normative cough response data obtained from 32 healthy controls (HCs). Participants displayed decreased UTC and cough responses compared to HCs. It is unknown if these preliminary results manifest as a consequence of disrupted sensory (afferent) projections, an inability to perceive or discriminate cough stimuli, disrupted motor (efferent) response, peripheral weakness, or any combination of these factors. Future work should attempt to clarify if the observed phenomena are borne out in a larger sample of individuals with TBI, determine the relative contributions of central versus peripheral nervous system structures to cough sensory perceptual changes following TBI (should they exist), and formulate recommendations for systematic screening and assessment of cough sensory perception in order to facilitate rehabilitative efforts. This project is identified with the National Clinical Trials NCT02240329.
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Comparison of Two Methods for Inducing Reflex Cough in Patients With Parkinson’s Disease, With and Without Dysphagia. Dysphagia 2015; 31:66-73. [DOI: 10.1007/s00455-015-9659-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 10/10/2015] [Indexed: 11/27/2022]
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Lee SJ, Lee KW, Kim SB, Lee JH, Park MK. Voluntary Cough and Swallowing Function Characteristics of Acute Stroke Patients Based on Lesion Type. Arch Phys Med Rehabil 2015; 96:1866-72. [DOI: 10.1016/j.apmr.2015.06.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 06/29/2015] [Accepted: 06/30/2015] [Indexed: 02/09/2023]
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Kulnik ST, MacBean V, Birring SS, Moxham J, Rafferty GF, Kalra L. Accuracy of portable devices in measuring peak cough flow. Physiol Meas 2015; 36:243-57. [DOI: 10.1088/0967-3334/36/2/243] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Wheeler Hegland K, Troche MS, Brandimore AE, Davenport PW, Okun MS. Comparison of voluntary and reflex cough effectiveness in Parkinson's disease. Parkinsonism Relat Disord 2014; 20:1226-30. [PMID: 25246315 PMCID: PMC5450039 DOI: 10.1016/j.parkreldis.2014.09.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 09/02/2014] [Accepted: 09/04/2014] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Multiple airway protective mechanisms are impacted with Parkinson's disease (PD), including swallowing and cough. Cough serves to eject material from the lower airways, and can be produced voluntarily (on command) and reflexively in response to aspirate material or other airway irritants. Voluntary cough effectiveness is reduced in PD however it is not known whether reflex cough is affected as well. The goal of this study was to compare the effectiveness between voluntary and reflex cough in patients with idiopathic PD. METHODS Twenty patients with idiopathic PD participated. Cough airflow data were recorded via facemask in line with a pneumotachograph. A side delivery port connected the nebulizer for delivery of capsaicin, which was used to induce cough. Three voluntary coughs and three reflex coughs were analyzed from each participant. A two-way repeated measures analysis of variance was used to compare voluntary versus reflex cough airflow parameters. RESULTS Significant differences were found for peak expiratory flow rate (PEFR) and cough expired volume (CEV) between voluntary and reflex cough. Specifically, both PEFR and CEV were reduced for reflex as compared to voluntary cough. CONCLUSION Cough PEFR and CEV are indicative of cough effectiveness in terms of the ability to remove material from the lower airways. Differences between these two cough types likely reflect differences in the coordination of the respiratory and laryngeal subsystems. Clinicians should be aware that evaluation of cough function using voluntary cough tasks overestimates the PEFR and CEV that would be achieved during reflex cough in patients with PD.
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Affiliation(s)
- Karen Wheeler Hegland
- Department of Speech Language and Hearing Sciences, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA; Center for Movement Disorders and Neurorestoration, College of Medicine, University of Florida, Gainesville, FL, USA.
| | - Michelle S Troche
- Department of Speech Language and Hearing Sciences, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA; Center for Movement Disorders and Neurorestoration, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Alexandra E Brandimore
- Department of Speech Language and Hearing Sciences, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA; Center for Movement Disorders and Neurorestoration, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Paul W Davenport
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Michael S Okun
- Center for Movement Disorders and Neurorestoration, College of Medicine, University of Florida, Gainesville, FL, USA; Department of Neurology, College of Medicine, University of Florida, Gainesville, FL, USA
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Hegland KW, Okun MS, Troche MS. Sequential voluntary cough and aspiration or aspiration risk in Parkinson's disease. Lung 2014; 192:601-8. [PMID: 24792231 DOI: 10.1007/s00408-014-9584-7] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 04/07/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Disordered swallowing, or dysphagia, is almost always present to some degree in people with Parkinson's disease (PD), either causing aspiration or greatly increasing the risk for aspiration during swallowing. This likely contributes to aspiration pneumonia, a leading cause of death in this patient population. Effective airway protection is dependent upon multiple behaviors, including cough and swallowing. Single voluntary cough function is disordered in people with PD and dysphagia. However, the appropriate response to aspirate material is more than one cough, or sequential cough. The goal of this study was to examine voluntary sequential coughing in people with PD, with and without dysphagia. METHODS Forty adults diagnosed with idiopathic PD produced two trials of sequential voluntary cough. The cough airflows were obtained using pneumotachograph and facemask and subsequently digitized and recorded. All participants received a modified barium swallow study as part of their clinical care, and the worst penetration-aspiration score observed was used to determine whether the patient had dysphagia. RESULTS There were significant differences in the compression phase duration, peak expiratory flow rates, and amount of air expired of the sequential cough produced by participants with and without dysphagia. CONCLUSIONS The presence of dysphagia in people with PD is associated with disordered cough function. Sequential cough, which is important in removing aspirate material from large- and smaller-diameter airways, is also impaired in people with PD and dysphagia compared with those without dysphagia. There may be common neuroanatomical substrates for cough and swallowing impairment in PD leading to the co-occurrence of these dysfunctions.
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Affiliation(s)
- Karen Wheeler Hegland
- Department of Speech, Language and Hearing Sciences, University of Florida, 336 Dauer Hall, Gainesville, FL, 32611, USA,
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