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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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Conclusion Chronic respiratory disease in patients with stable IHD is frequent but often missed due to overlap of symptoms. Spirometry is a simple tool to recognize the underlying pulmonary condition and patients respond favorably with appropriate treatment
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
CONCLUSIONS: This study provides preliminary evidence that BMI may increase the risk for arsenic-related non-malignant respiratory disease. PMID: 28738299 [PubMed - as supplied by publisher]
Source: Environmental Research - Category: Environmental Health Authors: Tags: Environ Res Source Type: research
AbstractPurposeCough is a common symptom of pulmonary sarcoidosis. We analyzed the severity of cough and factors associated with cough in a university sarcoidosis clinic cohort.MethodsConsecutive patients completed the Leicester Cough Questionnaire (LCQ) and a cough visual analog scale (VAS). Clinical and demographic data were collected. Means of the LCQ were analyzed in patients who had multiple visits in terms of constant variables (e.g., race, sex).Results355 patients completed the LCQ and VAS at 874 visits. Cough was significantly worse in blacks than whites as determined by the LCQ-mean (16.5  ± 2.6 v...
Source: Lung - Category: Respiratory Medicine Source Type: research
Correlation of induced sputum eosinophil levels with clinical parameters in mild and moderate persistent asthma in children aged 7-18 years. J Asthma. 2017 Jul 11;:1-6 Authors: Kansal P, Nandan D, Agarwal S, Patharia N, Arya N Abstract BACKGROUND: Treatment decisions in asthma are currently based on clinical assessment and spirometry. Sputum eosinophil, being a marker of airway inflammation, can serve as a tool for assessing severity and response to treatment in asthma patients. OBJECTIVES: To measure eosinophil percentage in induced sputum in children with asthma and correlate it with clinica...
Source: Journal of Asthma - Category: Respiratory Medicine Tags: J Asthma Source Type: research
Publication date: Available online 5 July 2017 Source:Pulmonary Pharmacology & Therapeutics Author(s): Kefang Lai, Ruchong Chen, Wen Peng, Wenzhi Zhan Non-asthmatic eosinophilic bronchitis (NAEB) is an important cause of chronic cough. The patients with NAEB present irritable cough as a sole or major symptom. They share similar features with asthmatic patients: sputum eosinophilia and responds well to glucocorticosteroids. However, compared with asthma, NAEB subjects have a normal spirometry and absence of airway hyperresponsiveness. The inflammatory cells and airway remodeling might result in the difference of mechan...
Source: Pulmonary Pharmacology and Therapeutics - Category: Respiratory Medicine Source Type: research
Cough is an airway-protective mechanism that serves to detect and forcefully eject aspirate material. Existing research has identified the ability of healthy young adults to suppress or modify cough motor output based on external cueing. However, no study has evaluated the ability of people with Parkinson’s disease (PD) and healthy older adults (HOAs) to upregulate cough motor output. The goal of this study was to evaluate the ability of people with PD and healthy age-matched controls (HOAs) to upregulate reflex and voluntary cough function volitionally with verbal instruction and visual biofeedback of airflow target...
Source: Journal of Applied Physiology - Category: Physiology Authors: Tags: RESEARCH ARTICLE Source Type: research
Authors: Paneroni M, D' Abrosca F, Fokom G, Comini L, Vitacca M Abstract A high variability in functional tests and activities used during the pulmonary rehabilitation has been observed in post-intensive care unit (ICU) patients, and the best battery of tests to adopt has not been described yet. We tested in patients admitted in a post-ICU Step Down Unit the ability to perform the more frequent functional volitional tests. The relations of each single volitional test with general disability and dyspnea at discharge were also evaluated. Ten volitional tests including: bedside spirometry test (ST: FEV1%, FVC%), maxim...
Source: Monaldi Archives for Chest Disease - Category: Respiratory Medicine Tags: Monaldi Arch Chest Dis Source Type: research
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