keyword
MENU ▼
Read by QxMD icon Read
search

Hyperinflation

keyword
https://www.readbyqxmd.com/read/28214133/dynamic-hyperinflation-in-patients-with-asthma-and-exercise-induced-bronchoconstriction
#1
Olga Mediano, Raquel Casitas, Carlos Villasante, Elisabet Martínez-Cerón, Raúl Galera, Ester Zamarrón, Francisco García-Río
BACKGROUND: Little is known about the behavior of operative lung volumes during exercise in patients with asthma and exercise-induced bronchoconstriction (EIB). OBJECTIVES: To compare the presence of dynamic hyperinflation (DH) in patients with mild asthma with and without EIB and in healthy individuals and to relate the changes in end-expiratory lung volume (EELV) with postexercise airflow reduction. METHODS: A total of 122 consecutive stable patients (>12 years of age) with mild asthma and 38 controls were studied...
February 14, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28203436/chest-physiotherapy-in-mechanically-ventilated-patients-without-pneumonia-a-narrative-review
#2
REVIEW
Herbert D Spapen, Jouke De Regt, Patrick M Honoré
A beneficial adjuvant role of chest physiotherapy (CPT) to promote airway clearance, alveolar recruitment, and ventilation/perfusion matching in mechanically ventilated (MV) patients with pneumonia or relapsing lung atelectasis is commonly accepted. However, doubt prevails regarding the usefulness of applying routine CPT in MV subjects with no such lung diseases. In-depth narrative review based on a literature search for prospective randomized trials comparing CPT with a non-CPT strategy in adult patients ventilated for at least 48 h...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28199243/intraabdominal-surgery-and-anesthesia-management
#3
John Hedley-Whyte
: Inspired Oxygenation in Surgical Patients During General Anesthesia With Controlled Ventilation: A Concept of Atelectasis. By Bendixen HH, Hedley-Whyte J, and Laver MB. New Engl J Med 1963; 269:991-996. Reprinted with permission. ABSTRACT: The purpose of this study was to determine if the pattern of ventilation, by itself, influences oxygenation during anesthesia and surgery and examine the hypothesis that progressive pulmonary atelectasis may occur during constant ventilation whenever periodic hyperventilation is lacking, but is reversible by passive hyperinflation of the lungs...
March 2017: Anesthesiology
https://www.readbyqxmd.com/read/28194830/parasternal-intercostal-muscle-activity-during-methacholine-induced-bronchoconstriction
#4
Victoria MacBean, Claire L Pringle, Alan C Lunt, Keith D Sharp, Ashraf Ali, Anne Greenough, John Moxham, Gerrard F Rafferty
Neural respiratory drive, measured via the parasternal intercostal electromyogram (EMGpara), provides a non-invasive index of the load-capacity balance of the respiratory muscle pump. Previous studies in patients with obstructive lung disease have shown strong relationships between EMGpara and the extent of both airflow obstruction and hyperinflation. The relative influence of the two factors has not, however, been described. Airflow obstruction was induced via methacholine challenge testing in twenty-five adult humans...
February 14, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28185721/approaches-and-adjuncts-used-by-physiotherapists-when-suctioning-adult-patients-who-are-intubated-and-ventilated-in-intensive-care-units-in-australia-and-new-zealand-a-cross-sectional-survey
#5
Charissa S L Tan, Meg Harrold, Kylie Hill
BACKGROUND: Suctioning is an integral component of care for patients who are intubated and ventilated in an intensive care unit (ICU). There appears to be no published data of physiotherapy suctioning practices in Australia or New Zealand. OBJECTIVE: To describe suctioning practices and the factors which have shaped these practices, of experienced physiotherapists working with adults who are intubated and ventilated in an ICU across Australia and New Zealand. Areas of investigation focused on: (i) suctioning approach (i...
February 6, 2017: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/28182686/predicting-structure-function-relations-and-survival-following-surgical-and-bronchoscopic-lung-volume-reduction-treatment-of-emphysema
#6
Jarred R Mondoñedo, Béla Suki
Lung volume reduction surgery (LVRS) and bronchoscopic lung volume reduction (bLVR) are palliative treatments aimed at reducing hyperinflation in advanced emphysema. Previous work has evaluated functional improvements and survival advantage for these techniques, although their effects on the micromechanical environment in the lung have yet to be determined. Here, we introduce a computational model to simulate a force-based destruction of elastic networks representing emphysema progression, which we use to track the response to lung volume reduction via LVRS and bLVR...
February 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28142136/feasibility-and-safety-of-a-transthoracic-pneumostoma-airway-bypass-in-severe-emphysema-patients
#7
Gregory I Snell, Lynda Holsworth, Sadie Khorramnia, Glen P Westall, Trevor J Williams, Silvana Marasco, Julian H Gooi
BACKGROUND: Emphysema is characterised by airflow obstruction, hyperinflation, and resultant dyspnoea. It is worth investigating whether decompression improves lung mechanics and enhances quality of life (QoL). OBJECTIVES: The purpose of this study was to describe the feasibility and safety of creating a transthoracic pneumostoma to enable lung reduction. METHODS: A transthoracic 10-mm diameter Portaero Access Tube (Portaero™, Cupertino, CA, USA) was implanted via a third intercostal space incision in 15 severe emphysema patients [mean age 63 years, forced expiratory volume in 1 s 54% predicted, diffusing capacity for carbon monoxide 31% predicted, residual volume 246% predicted, Six-Minute Walk Test 296 m]...
February 1, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28132419/detection-of-smoothly-distributed-spatial-outliers-with-applications-to-identifying-the-distribution-of-parenchymal-hyperinflation-following-an-airway-challenge-in-asthmatics
#8
Andrew L Thurman, Jiwoong Choi, Sanghun Choi, Ching-Long Lin, Eric A Hoffman, Chang Hyun Lee, Kung-Sik Chan
Methacholine challenge tests are used to measure changes in pulmonary function that indicate symptoms of asthma. In addition to pulmonary function tests, which measure global changes in pulmonary function, computed tomography images taken at full inspiration before and after administration of methacholine provide local air volume changes (hyper-inflation post methacholine) at individual acinar units, indicating local airway hyperresponsiveness. Some of the acini may have extreme air volume changes relative to the global average, indicating hyperresponsiveness, and those extreme values may occur in clusters...
January 29, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28124966/-a-case-of-bronchiolitis-obliterans-secondary-to-human-metapneumovirus-bronchiolitis
#9
Osman Yeşilbaş, Esra Şevketoğlu, Hasan Serdar Kıhtır, Mey Talip Petmezci, Elif Bato, Seda Balkaya, Nevin Hatipoğlu, Mert Ahmet Kuşkucu, Figen Palabıyık, Erkan Çakır
Human metapneumovirus (hMPV), formerly classified in Paramyxoviridae family is now moved into Pneumoviridae, which was described as a novel family. It causes upper and lower respiratory tract infections (LRTIs) usually in children younger than five years old. The recent epidemiological studies indicated that hMPV is the second most frequently detected virus in LRTIs of young children, following the respiratory syncytial virus (RSV). Bronchiolitis obliterans (BO) is a chronic obstructive lung disease characterized by fibrosis of the distal respiratory airways...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28119488/altered-lung-structure-and-function-in-mid-childhood-survivors-of-very-preterm-birth
#10
Shannon J Simpson, Karla M Logie, Christopher A O'Dea, Georgia L Banton, Conor Murray, Andrew C Wilson, J Jane Pillow, Graham L Hall
RATIONALE: Survivors of preterm birth are at risk of chronic and lifelong pulmonary disease. Follow-up data describing lung structure and function are scarce in children born preterm during the surfactant era. OBJECTIVES: To obtain comprehensive data on lung structure and function in mid-childhood from survivors of preterm birth. We aimed to explore relationships between lung structure, lung function and respiratory morbidity as well as early life contributors to poorer childhood respiratory outcomes...
January 24, 2017: Thorax
https://www.readbyqxmd.com/read/28109942/effect-of-pulmonary-rehabilitation-on-tidal-expiratory-flow-limitation-at-rest-and-during-exercise-in-copd-patients
#11
Elpida P Theodorakopoulou, Sofia-Antiopi Gennimata, Maria Harikiopoulou, Georgios Kaltsakas, Anastasios Palamidas, Antonia Koutsoukou, Charis Roussos, Epameinondas N Kosmas, Petros Bakakos, Nickolaos G Koulouris
We hypothesized that severe COPD patients who present with the disadvantageous phenomenon of Expiratory Flow Limitation (EFL) may benefit as COPD patients without EFL do after implementation of a Pulmonary Rehabilitation (PR) program. Forty-two stable COPD patients were studied at rest and during exercise. EFL and dynamic hyperinflation (DH) were documented using the negative expiratory pressure (NEP) technique and inspiratory capacity (IC) maneuvers, respectively. Patient centered outcomes were evaluated by the Saint-George's Respiratory Questionnaire (SGRQ) and the mMRC dyspnea scale...
January 18, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28093429/paediatric-ed-bipap-continuous-quality-improvement-programme-with-patient-analysis-2005-2013
#12
Thomas Abramo, Abby Williams, Samaiya Mushtaq, Mark Meredith, Rawle Sepaule, Kristen Crossman, Cheryl Burney Jones, Suzanne Godbold, Zhuopei Hu, Todd Nick
OBJECTIVE: In paediatric moderate-to-severe asthmatics, there is significant bronchospasm, airway obstruction, air trapping causing severe hyperinflation with more positive intraplural pressure preventing passive air movement. These effects cause an increased respiratory rate (RR), less airflow and shortened inspiratory breath time. In certain asthmatics, aerosols are ineffective due to their inadequate ventilation. Bilevel positive airway pressure (BiPAP) in acute paediatric asthmatics can be an effective treatment...
January 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/28079615/neuromuscular-weakness-in-chronic-obstructive-pulmonary-disease-chest-wall-diaphragm-and-peripheral-muscle-contributions
#13
Adam Alter, Loutfi S Aboussouan, Eduardo Mireles-Cabodevila
PURPOSE OF REVIEW: Chronic obstructive lung disease affects the lung parenchyma and airways leading to well described effects in respiratory function. This review describes the current knowledge and advances regarding neuromuscular function and chest wall mechanics, which are affected in chronic obstructive pulmonary disease (COPD). RECENT FINDINGS: In COPD, progressive lung hyperinflation becomes constrained by a chest wall with decreasing capacity to expand, resulting in respiratory muscle inefficiency...
March 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28066619/clinical-management-of-chronic-obstructive-pulmonary-disease-patients-with-muscle-dysfunction
#14
REVIEW
Joaquim Gea, Carme Casadevall, Sergi Pascual, Mauricio Orozco-Levi, Esther Barreiro
Muscle dysfunction is frequently observed in chronic obstructive pulmonary disease (COPD) patients, contributing to their exercise limitation and a worsening prognosis. The main factor leading to limb muscle dysfunction is deconditioning, whereas respiratory muscle dysfunction is mostly the result of pulmonary hyperinflation. However, both limb and respiratory muscles are also influenced by other negative factors, including smoking, systemic inflammation, nutritional abnormalities, exacerbations and some drugs...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28040521/bronchodilator-response-in-fvc-is-larger-and-more-relevant-than-in-fev1-in-severe-airflow-obstruction
#15
Philip H Quanjer, Gregg L Ruppel, Arnulf Langhammer, Abhishek Krishna, Frans Mertens, Ane Johannessen, Ana M B Menezes, Fernando C Wehrmeister, Rogelio Perez-Padilla, Maureen P Swanney, Wan C Tan, Jean Bourbeau
BACKGROUND: Recommendations on interpreting tests of bronchodilator responsiveness (BDR) are conflicting. We investigated the dependence of BDR criteria on sex, age, height, ethnicity and severity of respiratory impairment. METHODS: BDR tests were available from clinical patients in the Netherlands, New Zealand and the USA (N=15,278, 51.7% females) and surveys in Canada, Norway and five Latin-American countries (N=16,250, 54.7% females). BDR in FEV1, FVC and FEV1/ FVC was expressed as absolute change, % baseline, % predicted and z-score...
December 28, 2016: Chest
https://www.readbyqxmd.com/read/28008243/efficacy-of-tiotropium-olodaterol-fixed-dose-combination-in-copd
#16
REVIEW
Eric Derom, Guy G Brusselle, Guy F Joos
Tiotropium-olodaterol, formulated in the Respimat soft-mist inhaler, is an inhaled fixed-dose combination (FDC) of a long-acting muscarinic antagonist (LAMA) and a long-acting β2-agonist (LABA), commercialized under the name of Spiolto or Stiolto. The efficacy of tiotropium-olodaterol 5-5 μg once daily in adult patients with COPD was documented in eleven large, multicenter trials of up to 52 weeks duration. Tiotropium-olodaterol 5-5 μg not only improved spirometric values to a significantly greater extent than placebo but also resulted in statistically significant beneficial effects on dyspnea, markers of hyperinflation, use of rescue medication, health-related quality of life, and exercise endurance...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27998300/is-increased-positive-end-expiratory-pressure-the-culprit-autoresuscitation-in-a-44-year-old-man-after-prolonged-cardiopulmonary-resuscitation-a-case-report
#17
Henning Hagmann, Katrin Oelmann, Robert Stangl, Guido Michels
BACKGROUND: The phenomenon of autoresuscitation is rare, yet it is known to most emergency physicians. However, the pathophysiology of the delayed return of spontaneous circulation remains enigmatic. Among other causes hyperinflation of the lungs and excessively high positive end-expiratory pressure have been suggested, but reports including cardiopulmonary monitoring during cardiopulmonary resuscitation are scarce to support this hypothesis. CASE PRESENTATION: We report a case of autoresuscitation in a 44-year-old white man after 80 minutes of advanced cardiac life support accompanied by continuous capnometry and repeated evaluation by ultrasound and echocardiography...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27992862/endobronchial-valves-for-endoscopic-lung-volume-reduction-best-practice-recommendations-from-expert-panel-on-endoscopic-lung-volume-reduction
#18
Dirk-Jan Slebos, Pallav L Shah, Felix J F Herth, Arschang Valipour
Endoscopic lung volume reduction (ELVR) is being adopted as a treatment option for carefully selected patients suffering from severe emphysema. ELVR with the one-way endobronchial Zephyr valves (EBV) has been demonstrated to improve pulmonary function, exercise capacity, and quality of life in patients with both heterogeneous and homogenous emphysema without collateral ventilation. In this "expert best practices" review, we will highlight the practical aspects of this therapy. Key selection criteria for ELVR are hyperinflation with a residual volume >175% of predicted, forced expiratory volume <50% of predicted, and a 6-min walking distance >100 m...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/27983888/eosinophilic-and-neutrophilic-airway-inflammation-in-the-phenotyping-of-mild-to-moderate-asthma-and-chronic-obstructive-pulmonary-disease
#19
Katarzyna Górska, Magdalena Paplińska-Goryca, Patrycja Nejman-Gryz, Krzysztof Goryca, Rafał Krenke
Asthma and chronic obstructive pulmonary disease (COPD) are heterogeneous diseases with different inflammatory phenotypes. Various inflammatory mediators play a role in these diseases. The aim of this study was to analyze the neutrophilic and eosinophilic airway and systemic inflammation as the phenotypic characterization of patients with asthma and COPD. Twenty-four patients with asthma and 33 patients with COPD were enrolled in the study. All the patients were in mild-to-moderate stage of disease, and none of them were treated with inhaled corticosteroids...
December 16, 2016: COPD
https://www.readbyqxmd.com/read/27922741/how-do-dual-long-acting-bronchodilators-prevent-exacerbations-of-chronic-obstructive-pulmonary-disease
#20
Kai M Beeh, Pierre-Regis Burgel, Frits M E Franssen, Jose Luis Lopez-Campos, Stelios Loukides, John R Hurst, Matjaž Fležar, Charlotte Suppli Ulrik, Fabiano Di Marco, Daiana Stolz, Arschang Valipour, Brian Casserly, Björn Ställberg, Konstantinos Kostikas, Jadwiga A Wedzicha
Decreasing the frequency and severity of exacerbations is one of the main goals of treatment for patients with chronic obstructive pulmonary disease (COPD). Several studies have documented that long-acting bronchodilators (LABDs) can reduce exacerbation rate and/or severity, and others have shown that combinations of long-acting β2-adrenergic agonists (LABAs) and long-acting muscarinic antagonists (LAMAs) provide greater reductions in exacerbation frequency than either their monocomponents or LABA/inhaled corticosteroids (LABA/ICS) combinations in patients at low and high risk for these events...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
keyword
keyword
39451
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"