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Peak cough flow

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https://www.readbyqxmd.com/read/29202684/voluntary-cough-intensity-and-its-influencing-factors-differ-by-sex-in-community-dwelling-adults
#1
Akiko Yawata, Atsuhiro Tsubaki, Haruka Yawata, Haruna Takai, Kayomi Matsumoto, Nana Takehara, Ryosaku Kobayashi
BACKGROUND: Cough peak flow (CPF) is widely used for measuring voluntary cough intensity. However, the respective factors that affect CPF are not known. The aim of this study was to determine the factors affecting CPF by sex in community-dwelling adults. METHOD: We recruited participants using posters exhibited at a public gymnasium. Participation was voluntary, and all participants provided informed consent. Nonsmoking community residents (102 males, 49.6 ± 20...
December 2017: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/29200637/combined-respiratory-muscle-training-facilitates-expiratory-muscle-activity-in-stroke-patients
#2
Myeong-Rae Jo, Nan-Soo Kim
[Purpose] The aim of this study was to investigate the effect of combined respiratory muscle training on expiratory muscle activity in stroke patients. [Subjects and Methods] Twenty-five stroke patients were assigned to either the intervention group (n=12) or the control group (n=13). Both groups participated in a conventional stroke rehabilitation program, while the intervention group also received respiratory muscle training for 20 to 30 minutes a day, 3 times a week, for 8 weeks. Surface electromyographic data were collected from the rectus abdominis, internal oblique, and external oblique on the paretic side...
November 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29162060/long-term-prognosis-of-chronic-cough-a-prospective-observational-cohort-study
#3
Heikki O Koskela, Anne M Lätti, Minna K Purokivi
BACKGROUND: The long-term prognosis of chronic cough and its determinants need to be clarified. METHODS: This is a prospective, observational cohort study. Eighty-nine unselected subjects with chronic (> 8 weeks' duration) cough were carefully investigated: Clinical examination, symptom questionnaire, Leicester Cough Questionnaire (LCQ), skin prick tests, ambulatory peak expiratory flow monitoring, spirometry before and after 0.4 mgs of salbutamol, exhaled nitric oxide concentration measurement, hypertonic saline cough provocation test, and histamine bronchial provocation test...
November 21, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29114887/cough-strength-and-expiratory-force-in-aspirating-and-nonaspirating-postradiation-head-and-neck-cancer-survivors
#4
Katherine A Hutcheson, Martha P Barrow, Carla L Warneke, Yiqun Wang, George Eapen, Stephen Y Lai, Denise A Barringer, Emily K Plowman, Jan S Lewin
OBJECTIVE: Expiratory functions that clear aspiration from the airway are compromised in patients with neurogenic dysphagia for whom cough and expiratory force may be impaired by the primary disease process. The relationship between expiratory function, cough, and aspiration is less clear in head and neck cancer (HNC) survivors for whom the disease process does not directly impact the lower respiratory system. Our objective was to compare mechanisms of airway clearance (expiratory force and cough) with aspiration status in postradiated HNC survivors...
November 8, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29104754/poor-cough-flow-in-acute-stroke-patients-is-associated-with-reduced-functional-residual-capacity-and-low-cough-inspired-volume
#5
Katie Ward, Prashant Rao, Charles C Reilly, Gerrard Francis Rafferty, Michael I Polkey, Lalit Kalra, John Moxham
Introduction: Each year 7 million people die of stroke worldwide; most deaths are caused by chest infections. Patients with acute stroke have impaired voluntary cough flow, associated with increased risk of chest infections. Reduced functional residual capacity (FRC) could lead to impaired cough flow. We therefore compared FRC in acute hemiparetic stroke patients and controls and explored its relationship with volume inspired before cough and voluntary cough peak flow. Methods: 21 patients within 2 weeks of first-ever middle cerebral artery territory (MCA) infarct (mean (SD) age 68 (11) years, 10 females) and 30 controls (58 (11) years, 15 females) underwent FRC and voluntary cough testing (cough inspired volume and peak flow) while semirecumbent...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/29060142/classification-of-voluntary-coughs-applied-to-the-screening-of-respiratory-disease
#6
Christian Infante, Daniel B Chamberlain, Rahul Kodgule, Richard Ribon Fletcher
Pulmonary and respiratory diseases (e.g. asthma, COPD, allergies, pneumonia, tuberculosis, etc.) represent a large proportion of the global disease burden, mortality, and disability. In this context of creating automated diagnostic tools, we explore how the analysis of voluntary cough sounds may be used to screen for pulmonary disease. As a clinical study, voluntary coughs were recorded using a custom mobile phone stethoscope from 54 patients, of which 7 had COPD, 15 had asthma, 11 had allergic rhinitis, 17 had both asthma and allergic rhinitis, and four had both COPD and allergic rhinitis...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29034296/diagnosis-of-asthma-in-symptomatic-children-based-on-measures-of-lung-function-an-analysis-of-data-from-a-population-based-birth-cohort-study
#7
Clare Murray, Philip Foden, Lesley Lowe, Hannah Durrington, Adnan Custovic, Angela Simpson
BACKGROUND: Concerns have been expressed about asthma overdiagnosis. The UK National Institute of Health and Care Excellence (NICE) proposed a new diagnostic algorithm applying four lung function measures sequentially (ratio of forced expiratory volume in 1 s [FEV1] to forced vital capacity [FVC] <70%, bronchodilator reversibility ≥12%, fractional exhaled nitric oxide [FeNO] ≥35 parts per billion, and peak expiratory flow variability >20%). We aimed to assess the diagnostic value of three of the tests individually, and then test the proposed algorithm in symptomatic children...
October 2017: Lancet Child & Adolescent Health
https://www.readbyqxmd.com/read/28935013/-can-preoperative-peak-expiratory-flow-predict-postoperative-pulmonary-complications-in-lung-cancer-patients-undergoing-lobectomy
#8
Kun Zhou, Yanming Wu, Jianhua Su, Yutian Lai, Cheng Shen, Pengfei Li, Guowei Che
BACKGROUND: Postoperative pulmonary complications (PPCs), especially postoperative pneumonia (POP), directly affect the rapid recovery of lung cancer patients after surgery. Peak expiratory flow (PEF) can reflect airway patency and cough efficiency. Moreover, cough impairment may lead to accumulation of pulmonary secretions which can increase the risk of PPCs. The aim of this study is to investigate the effect of preoperative PEF on PPCs in patients with lung cancer. METHODS: Retrospective research was conducted on 433 lung cancer patients who underwent lobectomy at the West China Hospital of Sichuan University from January 2014 to December 2015...
September 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28900041/predicting-extubation-outcome-by-cough-peak-flow-measured-using-a-built-in-ventilator-flow-meter
#9
Florent Gobert, Hodane Yonis, Romain Tapponnier, Raul Fernandez, Marie-Aude Labaune, Jean-François Burle, Jack Barbier, Bernard Vincent, Maria Cleyet, Jean-Christophe Richard, Claude Guérin
BACKGROUND: Successful weaning from mechanical ventilation depends on the patient's ability to cough efficiently. Cough peak flow (CPF) could predict extubation success using a dedicated flow meter but required patient disconnection. We aimed to predict extubation outcome using an overall model, including cough performance assessed by a ventilator flow meter. METHODS: This was a prospective observational study conducted from November 2014 to October 2015. Before and after a spontaneous breathing trial, subjects were encouraged to cough as strongly as possible before freezing the ventilator screen to assess CPF and tidal volume (VT) in the preceding inspiration...
September 12, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28900040/reduced-diaphragm-excursion-during-reflexive-citric-acid-cough-test-in-subjects-with-subacute-stroke
#10
Yong-Min Choi, Geun-Young Park, Yeonji Yoo, Donggyun Sohn, YongJun Jang, Sun Im
BACKGROUND: Diaphragm excursion is limited during respiratory maneuvers after a stroke. How the diaphragm is limited during reflexive coughs and affects the effectiveness of cough in stroke patients is unclear. This study aimed to measure reflexive cough strength by cough peak flow (CPF) induced by citric acid nebulization (2.8 mol/L), record diaphragm excursions during reflexive coughs in stroke subjects at risk of silent aspiration, and compare these values with those of stroke subjects without risk of aspiration or dysphagia...
September 12, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28894819/computational-modelling-of-cough-function-and-airway-penetrant-behavior-in-patients-with-disorders-of-laryngeal-function
#11
Bari Hoffman Ruddy, Don Nadun Kuruppumullage, Giselle Carnaby, Michael Crary, Jeffery Lehman, Olusegun J Ilegbusi
OBJECTIVE/HYPOTHESIS: Patients with laryngeal disorders often exhibit changes to cough function contributing to aspiration episodes. Two primary cough variables (peak cough flow: PCF and compression phase duration: CPD) were examined within a biomechanical model to determine their impact on characteristics that impact airway compromise. STUDY DESIGN: Computational study. METHODS: A Computational Fluid Dynamics (CFD) technique was used to simulate fluid flow within an upper airway model reconstructed from patient CT images...
February 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/28829884/effect-of-oral-prednisolone-on-symptom-duration-and-severity-in-nonasthmatic-adults-with-acute-lower-respiratory-tract-infection-a-randomized-clinical-trial
#12
RANDOMIZED CONTROLLED TRIAL
Alastair D Hay, Paul Little, Anthony Harnden, Matthew Thompson, Kay Wang, Denise Kendrick, Elizabeth Orton, Sara T Brookes, Grace J Young, Margaret May, Sandra Hollinghurst, Fran E Carroll, Harriet Downing, David Timmins, Natasher Lafond, Magdy El-Gohary, Michael Moore
Importance: Acute lower respiratory tract infection is common and often treated inappropriately in primary care with antibiotics. Corticosteroids are increasingly used but without sufficient evidence. Objective: To assess the effects of oral corticosteroids for acute lower respiratory tract infection in adults without asthma. Design, Setting, and Participants: Multicenter, placebo-controlled, randomized trial (July 2013 to final follow-up October 2014) conducted in 54 family practices in England among 401 adults with acute cough and at least 1 lower respiratory tract symptom not requiring immediate antibiotic treatment and with no history of chronic pulmonary disease or use of asthma medication in the past 5 years...
August 22, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28743265/the-predictive-value-of-respiratory-function-tests-for-non-invasive-ventilation-in-amyotrophic-lateral-sclerosis
#13
T B M Tilanus, J T Groothuis, J M C TenBroek-Pastoor, T B Feuth, Y F Heijdra, J P L Slenders, J Doorduin, B G Van Engelen, M J Kampelmacher, J Raaphorst
BACKGROUND: Non-invasive ventilation (NIV) improves survival and quality of life in amyotrophic lateral sclerosis (ALS) patients. The timing of referral to a home ventilation service (HVS), which is in part based on respiratory function tests, has shown room for improvement. It is currently unknown which respiratory function test predicts an appropriate timing of the initiation of NIV. METHODS: We analysed, retrospectively, serial data of five respiratory function tests: forced vital capacity (FVC), peak cough flow (PCF), maximum inspiratory and expiratory pressure (MIP and MEP) and sniff nasal inspiratory pressure (SNIP) in patients with ALS...
July 25, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28732433/the-effect-of-salt-space-on-clinical-findings-and-peak-expiratory-flow-in-children-with-mild-to-moderate-asthma-a-randomized-crossover-trial
#14
Saeideh Mazloomzadeh, Niousha Bakhshi, Akefeh Ahmadiafshar, Mehdi Gholami
The asthma treatment and control might be associated with significant burden on family and community' thus exploring other therapeutic plans could be desirable. The aim of this study was to investigate the effect of salt space on clinical findings and peak expiratory flow rate among children with asthma. In this randomized crossover trial, 34 patients aged 6-14 years old with mild to moderate asthma were selected and randomly divided into two groups. The first group went through a period of salt therapy by staying in the salt room for one hour, three times a week for 3 consecutive weeks and then was under observation for three weeks...
June 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28728441/ability-of-pulmonary-function-decline-to-predict-death-in-amyotrophic-lateral-sclerosis-patients
#15
Irina Enache, Cristina Pistea, Marie Fleury, Mickael Schaeffer, Monique Oswald-Mammosser, Andoni Echaniz-Laguna, Christine Tranchant, Nicolas Meyer, Anne Charloux
OBJECTIVES: Objectives were to evaluate the relative risk of death associated with lung function decline in patients with amyotrophic lateral sclerosis (ALS), and to examine the ability of ALS patients to perform volitional pulmonary function tests (PFTs). METHODS: The PFTs of 256 consecutive patients referred to the Strasbourg University Hospital ALS Centre over an eight-year period were reviewed. Slow vital capacity (VC), maximal inspiratory and expiratory pressures (MIP, MEP), sniff nasal inspiratory pressure (SNIP), and peak cough flow (PCF) were performed at diagnosis and then every four months...
July 20, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/28725446/sound-a-non-invasive-measure-of-cough-intensity
#16
Kai K Lee, Sergio Matos, Katie Ward, Gerrard F Rafferty, John Moxham, David H Evans, Surinder S Birring
INTRODUCTION: Cough intensity is an important determinant of cough severity reported by patients. Cough sound analysis has been widely validated for the measurement of cough frequency but few studies have validated its use in the assessment of cough strength. We investigated the relationship between cough sound and physiological measures of cough strength. METHODS: 32 patients with chronic cough and controls underwent contemporaneous measurements of voluntary cough sound, flow and oesophageal pressure...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/28715529/changes-in-peak-airflow-measurement-during-maximal-cough-after-vocal-fold-augmentation-in-patients-with-glottic-insufficiency
#17
Gregory R Dion, Efstratios Achlatis, Stephanie Teng, Yixin Fang, Michael Persky, Ryan C Branski, Milan R Amin
Importance: Compromised cough effectiveness is correlated with dysphagia and aspiration. Glottic insufficiency likely yields decreased cough strength and effectiveness. Although vocal fold augmentation favorably affects voice and likely improves cough strength, few data exist to support this hypothesis. Objective: To assess whether vocal fold augmentation improves peak airflow measurements during maximal-effort cough following augmentation. Design, Setting, and Participants: This case series study was conducted in a tertiary, academic laryngology clinic...
November 1, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28698267/clinical-criteria-for-tracheostomy-decannulation-in-subjects-with-acquired-brain-injury
#18
Claudia Enrichi, Irene Battel, Cristiano Zanetti, Isabella Koch, Laura Ventura, Katie Palmer, Francesca Meneghello, Francesco Piccione, Simonetta Rossi, Marta Lazzeri, Maurizio Sommariva, Andrea Turolla
BACKGROUND: Patients with acquired brain injury (ABI) often require long periods of having a tracheostomy tube for airway protection and prolonged mechanical ventilation. It has been recognized that fast and safe decannulation improves outcomes and facilitates the recovery process. Nevertheless, few studies have provided evidence for decannulation criteria, despite the high prevalence of ABI subjects with tracheostomies. The aim of our study was to assess which clinical parameters are the best predictors for decannulation in subjects with ABI...
October 2017: Respiratory Care
https://www.readbyqxmd.com/read/28635194/volitional-rehabilitative-assessments-in-patients-admitted-in-a-post-intensive-care-step-down-unit-a-feasibility-study
#19
Mara Paneroni, Francesco D' Abrosca, Georges Fokom, Laura Comini, Michele Vitacca
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%), maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), Peak Expiratory Flow during Cough (PCEF), Quadriceps Muscle Strength (QMS), latissimus Dorsi and teres Major Strength (DMS), Brachial biceps Muscle Strength (BMS), effort tolerance measured by sit-to-stand test, Takahashi test and 6-Min Walking Test (6MWT), were evaluated in post-ICU patients at entry and discharge from in-hospital rehabilitation...
May 18, 2017: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/28614985/stimulation-of-abdominal-and-upper-thoracic-muscles-with-surface-electrodes-for-respiration-and-cough-acute-studies-in-adult-canines
#20
James S Walter, Joseph Posluszny, Raymond Dieter, Robert S Dieter, Scott Sayers, Kiratipath Iamsakul, Christine Staunton, Donald Thomas, Mark Rabbat, Sanjay Singh
OBJECTIVE: To optimize maximal respiratory responses with surface stimulation over abdominal and upper thorax muscles and using a 12-Channel Neuroprosthetic Platform. METHODS: Following instrumentation, six anesthetized adult canines were hyperventilated sufficiently to produce respiratory apnea. Six abdominal tests optimized electrode arrangements and stimulation parameters using bipolar sets of 4.5 cm square electrodes. Tests in the upper thorax optimized electrode locations, and forelimb moment was limited to slight-to-moderate...
June 14, 2017: Journal of Spinal Cord Medicine
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