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Measurement of the Maximum Frequency of Electroglottographic Fluctuations in the Expiration Phase of Volitional Cough as a Functional Test for Cough Efficiency

AbstractThe hypotheses of the present study were that the maximum frequency of fluctuation of electroglottographic (EGG) signals in the expiration phase of volitional cough (VC) reflects the cough efficiency and that this EGG parameter is affected by impaired laryngeal closure, expiratory effort strength, and gender. For 20 normal healthy adults and 20 patients diagnosed with unilateral vocal fold paralysis (UVFP), each participant was fitted with EGG electrodes on the neck, had a transnasal laryngo-fiberscope inserted, and was asked to perform weak/strong VC tasks while EGG signals and a high-speed digital image of the larynx were recorded. The maximum frequency was calculated in the EGG fluctuation region coinciding with vigorous vocal fold vibration in the laryngeal HSDIs. In addition, each participant underwent spirometry for measurement of three aerodynamic parameters, including peak expiratory air flow (PEAF), during weak/strong VC tasks. Significant differences were found for both maximum EGG frequency and PEAF between the healthy and UVFP groups and between the weak and strong VC tasks. Among the three cough aerodynamic parameters, PEAF showed the highest positive correlation with the maximum EGG frequency. The correlation coefficients between the maximum EGG frequency and PEAF recorded simultaneously were 0.574 for the whole group, and 0.782/0.717/0.823/0.688 for the male/female/male-healthy/male-UVFP subgroups, respectively. Consequently, the maximum EGG frequency m...
Source: Dysphagia - Category: Speech-Language Pathology Source Type: research

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Conclusions Thoracic complications were more common in OVS and GVS than in OV band ligation.
Source: Egyptian Journal of Chest Diseases and Tuberculosis - Category: Respiratory Medicine Source Type: research
Conclusions: Among children with asthma and chronic exposure to woodsmoke, an air-filter intervention that improved indoor air quality did not affect quality-of-life measures. Intent-to-treat analysis did show an improvement in the secondary measure of dPFV. Trial registration: ClincialTrials.gov NCT00807183. https://doi.org/10.1289/EHP849 Received: 21 July 2016 Revised: 13 June 2017 Accepted: 16 June 2017 Published: 13 September 2017 Address correspondence to C.W. Noonan, School of Public and Community Health Sciences, 32 Campus Dr., University of Montana, Missoula, MT 59812 USA. Telephone: (406) 243-4957; Fax: (406...
Source: EHP Research - Category: Environmental Health Authors: Tags: Research Source Type: research
CONCLUSION: Airflow obstruction assessed from post-bronchodilator spirometry was not associated with use of solid fuels for cooking or heating. PMID: 28895752 [PubMed - as supplied by publisher]
Source: American Journal of Respiratory and Critical Care Medicine - Category: Respiratory Medicine Authors: Tags: Am J Respir Crit Care Med Source Type: research
Conclusion: Ethyl-paraben, bisphenol A, 2,5-dichlorophenol, and DIDP tended to be associated with altered respiratory health, with ethyl-paraben and bisphenol A exhibiting some consistency across respiratory outcomes. The trends between bisphenol A pregnancy level and increased asthma and bronchiolitis/bronchitis rates in childhood were consistent with a previous cohort study. https://doi.org/10.1289/EHP1015 Received: 25 August 2016 Revised: 12 January 2017 Accepted: 26 January 2017 Published: 08 September 2017 Address correspondence to C. Vernet, Institute for Advanced Biosciences (IAB), Centre de Recherche INSERM&n...
Source: EHP Research - Category: Environmental Health Authors: Tags: Research Source Type: research
Abstract BackgroundPeople with severe mental illness (SMI) have a lower life expectancy in part due to a higher prevalence of cardiac and metabolic disease. Less is known of the prevalence of respiratory disease in this group. AimsThis cross sectional, observational study aimed to assess the prevalence of symptoms associated with respiratory disease in patients admitted to an inpatient mental health unit. MethodsA convenience sample of eighty‐two inpatients had a structured interview and questionnaire completed. The questionnaire included self‐reported diagnoses of common diseases and screening questions designed to de...
Source: Internal Medicine Journal - Category: Internal Medicine Authors: Tags: Original Article Source Type: research
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Source: Indian Heart Journal - Category: Cardiology Source Type: research
Conclusions: This study suggests that elemental sulfur use, allowed in both organic and conventional farming, in close proximity to residential areas, may adversely affect children’s respiratory health. https://doi.org/10.1289/EHP528 Received: 19 May 2016 Revised: 05 May 2017 Accepted: 09 May 2017 Published: 14 August 2017 Address correspondence to R. Raanan, Center for Environmental Research and Children’s Health (CERCH), University of California, Berkeley, School of Public Health, 1995 University Ave., Suite 265, Berkeley, CA 94704 USA. Telephone: (510) 642-9431. Email: rachelraananrr@gmail.com Supplem...
Source: EHP Research - Category: Environmental Health Authors: Tags: Research Source Type: research
Conclusions: The study provides evidence that airway inflammation and the frequency of respiratory symptoms increase, whereas lung function decreases with increased ozone exposure in schoolchildren. https://doi.org/10.1289/EHP635 Received: 09 June 2016 Revised: 08 March 2017 Accepted: 13 March 2017 Published: 21 July 2017 Please address correspondence to A. Karakatsani, 2nd Pulmonary Department, ATTIKON University Hospital, School of Medicine, National and Kapodistrian University of Athens, 1, Rimini St., 124 62 Haidari, Greece. Telephone: 30-210-5831184. Email: annakara@otenet.gr, akarakats@med.uoa.gr The authors de...
Source: EHP Research - Category: Environmental Health Authors: Tags: Research Source Type: research
Authors: Hara J, Fujimura M, Ohkura N, Sakai T, Yamamura K, Abo M, Koba H, Watanabe S, Yoneda T, Nishikawa S, Sone T, Kimura H, Ishiura Y, Kasahara K Abstract BACKGROUND: We demonstrated that heightened cough response to bronchoconstriction is a fundamental feature of cough variant asthma (CVA). To evaluate this physiological feature of CVA in daily clinical practice, it is necessary to clarify the cough response to bronchoconstriction in healthy subjects. We evaluated cough response to methacholine (MCh)-induced bronchoconstriction in healthy subjects. A forced oscillometry technique was used to measure airway res...
Source: Experimental Lung Research - Category: Respiratory Medicine Tags: Exp Lung Res Source Type: research
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Source: Environmental Research - Category: Environmental Health Authors: Tags: Environ Res Source Type: research
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