Flextube reflectometry for localization of upper airway narrowing--a preliminary study in models and awake subjects.

Abstract:

:The aim of this study was to examine an acoustic reflection method using a flexible tube for identifying the obstructive site of the upper airway in snorers and patients with obstructive sleep apnoea (OSA). As a preliminary study it was performed n models and subjects in the awake state. Flextube narrowing was produced in a model of the nose and pharynx and three blinded observers assessed the obstructive level. The correlation between pharyngeal narrowing assessed by endoscopy and by acoustic measurement during Müller manoeuvres was also examined in 10 OSA patients and 11 healthy non-snoring, adults. Three blinded observers dentified the level of 176 of 180 random cases of flextube narrowing in a polycarbonate model correctly The level of narrowing was always correctly evaluated within 1.9 mm. Pharyngeal area decrease was measured by the flextube method during the Müller manoeuvre but it was not closely related to the findings by endoscopy. In conclusion the flextube reflectometry method was able to demonstrate narrowng in a model of the nose and pharynx in a precise way. Narrowing was also observed during Müller manoeuvres. Flextube reflectometry may be a promising method to detect upper airway narrowing but further evaluation during sleep is required.

journal_name

Respir Med

journal_title

Respiratory medicine

authors

Faber CE,Grymer L,Norregaard O,Hilberg O

doi

10.1053/rmed.2001.1116

subject

Has Abstract

pub_date

2001-08-01 00:00:00

pages

631-8

issue

8

eissn

0954-6111

issn

1532-3064

pii

S0954-6111(01)91116-3

journal_volume

95

pub_type

杂志文章
  • A novel approach of using educational pharmaceutical pictogram for improving inhaler techniques in patients with asthma.

    abstract:BACKGROUND:Proper inhaler technique is essential to maximize the benefit of medications and improve asthma outcomes. OBJECTIVE:To evaluate newly developed pictogram-incorporated medals and their utility on improving the inhaler techniques in asthmatic patients. METHODS:A prospective, an open label, randomized control...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.rmed.2018.09.004

    authors: Almomani BA,Mokhemer E,Al-Sawalha NA,Momany SM

    更新日期:2018-10-01 00:00:00

  • RANTES in exhaled breath condensate of stable and unstable asthma patients.

    abstract::RANTES has been implicated in the allergic inflammation of asthma by promoting the migration and activation of the inflammatory cells, including eosinophils. The study was undertaken to evaluate RANTES levels in the exhaled breath condensate (EBC) of asthmatics with different degrees of asthma severity. EBC was collec...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2008.03.010

    authors: Zietkowski Z,Tomasiak MM,Skiepko R,Bodzenta-Lukaszyk A

    更新日期:2008-08-01 00:00:00

  • Health status perception and airflow obstruction in five Latin American cities: the PLATINO study.

    abstract:BACKGROUND:COPD is a highly prevalent disease but underdiagnosed, undertreated and possibly under-recognized by patients. Limited information exists regarding patients' perception of COPD severity. We compared patients' general health status perception, degree of breathlessness and physical activity limitation with the...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,多中心研究

    doi:10.1016/j.rmed.2009.03.005

    authors: Montes de Oca M,Tálamo C,Halbert RJ,Perez-Padilla R,Lopez MV,Muiño A,Jardim JR,Valdivia G,Pertuzé J,Moreno D,Menezes AM,PLATINO Team.

    更新日期:2009-09-01 00:00:00

  • Challenges in managing Pseudomonas aeruginosa in non-cystic fibrosis bronchiectasis.

    abstract:BACKGROUND:An Expert Forum was held at the 2014 European Respiratory Society International Congress to address issues involved in the management of Pseudomonas aeruginosa infection in patients with non-cystic fibrosis bronchiectasis (NCFB). Multiple studies have found that chronic P. aeruginosa infection is associated ...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,评审

    doi:10.1016/j.rmed.2016.06.007

    authors: Wilson R,Aksamit T,Aliberti S,De Soyza A,Elborn JS,Goeminne P,Hill AT,Menendez R,Polverino E

    更新日期:2016-08-01 00:00:00

  • The cost of COPD exacerbations: a university hospital--based study in Greece.

    abstract:BACKGROUND:Hospitalization attributed to severe exacerbations is the major cost driver of Chronic Obstructive Pulmonary Disease (COPD). Given that in Greece no previous studies have addressed the economic burden of COPD, the aim of the study was to examine the hospitalization cost of COPD patients with severe exacerbat...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2010.09.020

    authors: Geitona M,Hatzikou M,Steiropoulos P,Alexopoulos EC,Bouros D

    更新日期:2011-03-01 00:00:00

  • Comparison between two methods for estimating pneumothorax size from chest X-rays.

    abstract:AIM:To compare the estimated size of spontaneous pneumothoraces using the established Rhea inter-pleural distances method with the CT-derived Collins method. METHOD:Adult patients with spontaneous pneumothorax treated conservatively were identified from the ED databases. X-rays were reviewed independently by two resea...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,多中心研究

    doi:10.1016/j.rmed.2005.11.022

    authors: Kelly AM,Weldon D,Tsang AY,Graham CA

    更新日期:2006-08-01 00:00:00

  • Sputum biomarkers during aspirin desensitization in nonsteroidal anti-inflammatory drugs exacerbated respiratory disease.

    abstract:BACKGROUND:Aspirin desensitization (AD) is an effective and safe therapeutic option for patients with nonsteroidal anti-inflammatory drugs (NSAIDs)-exacerbated respiratory disease (N-ERD). The mechanisms driving its beneficial effects remain poorly understood. OBJECTIVE:To investigate the effect of long-term AD on cli...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2019.04.021

    authors: Tyrak KE,Kupryś-Lipińska I,Czarnobilska E,Jakieła B,Pajdzik K,Ćmiel A,Plutecka H,Koziej M,Gawrońska A,Konduracka E,Kuna P,Sanak M,Mastalerz L

    更新日期:2019-06-01 00:00:00

  • Changes in airway hyperresponsiveness following smoking cessation: comparisons between Mch and AMP.

    abstract:BACKGROUND:Given the observed association between smoking, inflammation and airway hyperresponsiveness (AHR) one may predict that smoking cessation may improve AHR. However, only a few studies have investigated the effect of smoking on AHR and their results appear to be conflicting depending on the stimulus used in the...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2007.09.004

    authors: Piccillo G,Caponnetto P,Barton S,Russo C,Origlio A,Bonaccorsi A,Di Maria A,Oliveri C,Polosa R

    更新日期:2008-02-01 00:00:00

  • A randomized, double-blind dose-ranging study of the novel LAMA GSK573719 in patients with COPD.

    abstract:BACKGROUND:This study evaluated the dose-response and dosing interval of the novel long-acting muscarinic receptor antagonist (LAMA) GSK573719 in patients with COPD. METHODS:This randomized, double-blind, placebo-controlled, 3-way cross-over, incomplete block study evaluated 5 once-daily doses of GSK573719 (62.5-1000 ...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1016/j.rmed.2012.03.012

    authors: Donohue JF,Anzueto A,Brooks J,Mehta R,Kalberg C,Crater G

    更新日期:2012-07-01 00:00:00

  • Expression of integrins in human cultured mesothelial cells: the roles in cell-to-extracellular matrix adhesion and inhibition by RGD-containing peptide.

    abstract::Integrins play key roles in cell-to-cell and cell-to-extracellular matrix (ECM) adhesion. We investigated integrin expression on pleural mesothelial cells (PMCs) and the inhibitory effect of arginine-glycine-asparate (RGD)-containing peptide on the adhesion of PMCs to fibronectin and collagen. Using flow cytometry and...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1053/rmed.2000.1026

    authors: Liaw YS,Yu CJ,Shun CT,Lee YC,Kuo SH,Luh KT,Yang PC

    更新日期:2001-03-01 00:00:00

  • Tracheal collapsibility in adults is dynamic over time.

    abstract:BACKGROUND:Tracheal collapse is a weakness of the tracheal wall leading to expiratory central airway collapse of more than 50% compared to inspiration. It has previously been discussed whether the collapsibility of the greater airways is a stable or a dynamic condition. Indeed, other well-known lung diseases such as as...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2018.11.018

    authors: Nygaard M,Hilberg O,Rasmussen F,Bendstrup E

    更新日期:2019-01-01 00:00:00

  • Exercise-induced bronchospasm in children and adolescents with allergic rhinitis by treadmill and hyperventilation challenges.

    abstract:BACKGROUND:Respiratory complaints after exercise are common in patients with rhinitis. Exercise-induced bronchospasm (EIB) may be one of the causes. OBJECTIVES:To evaluate EIB prevalence in a group of children and adolescents with allergic rhinitis, to compare the treadmill running (TR) and eucapnic voluntary hyperven...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2018.04.001

    authors: Albuquerque Rodrigues Filho E,Rizzo JÂ,Gonçalves AV,Correia Junior MAV,Sarinho ESC,Medeiros D

    更新日期:2018-05-01 00:00:00

  • Multiplex PCR for the simultaneous detection of Chlamydia pneumoniae, Mycoplasma pneumoniae and Legionella pneumophila in community-acquired pneumonia.

    abstract::A multiplex polymerase chain reaction (PCR) was developed for the simultaneous detection of Chlamydia pneumoniae, Mycoplasma pneumoniae and Legionella pneumophila. Oligonucleotide primers for the amplification of the DNA of these three organisms were optimized for use in combination in the same reaction. PCR products ...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2003.11.012

    authors: Miyashita N,Saito A,Kohno S,Yamaguchi K,Watanabe A,Oda H,Kazuyama Y,Matsushima T,CAP Study Group.

    更新日期:2004-06-01 00:00:00

  • Release of inflammatory mediators from eosinophils following a hyperosmolar stimulus.

    abstract::Airway dehydration and subsequent hyperosmolarity of periciliary fluid are considered critical events in exercise-induced bronchoconstriction (EIB). It has been shown that an in vitro hyperosmolar stimulation of basophils and mast cells with mannitol can induce the release of histamine and leukotrienes. The aim of thi...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/s0954-6111(03)00119-7

    authors: Moloney ED,Griffin S,Burke CM,Poulter LW,O'Sullivan S

    更新日期:2003-08-01 00:00:00

  • Population-based estimates of transbronchial lung biopsy utilization and complications.

    abstract:BACKGROUND:Little is known about trends in the utilization or complication rates of transbronchial lung biopsy, particularly in community hospitals. METHODS:We used the Healthcare Cost and Utilization Project Florida State Inpatient and State Ambulatory Surgical Databases to assess trends in transbronchial lung biopsy...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2012.08.008

    authors: Tukey MH,Wiener RS

    更新日期:2012-11-01 00:00:00

  • Exhaled nitric oxide and exercise tolerance in severe COPD patients.

    abstract::To answer the question as to whether pulmonary rehabilitation programs (PRP) induced increase in exercise tolerance (ET) is associated with increased levels of exhaled nitric oxide (eNO) in COPD patients of different degrees of severity, we designed a prospective and controlled study. Forty-seven stable COPD patients ...

    journal_title:Respiratory medicine

    pub_type: 临床试验,杂志文章

    doi:10.1053/rmed.2001.1286

    authors: Clini E,Bianchi L,Foglio K,Vitacca M,Ambrosino N

    更新日期:2002-05-01 00:00:00

  • Clinical features of primary ciliary dyskinesia in Cyprus with emphasis on lobectomized patients.

    abstract:BACKGROUND:Despite the manifestations of primary ciliary dyskinesia (PCD) in early life, the diagnosis is often much delayed. Since 1998 in Cyprus, we have established the only national diagnostic and clinical referral center for PCD. OBJECTIVE:To review the phenotypic features at presentation of PCD patients in Cypru...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2015.01.015

    authors: Yiallouros PK,Kouis P,Middleton N,Nearchou M,Adamidi T,Georgiou A,Eleftheriou A,Ioannou P,Hadjisavvas A,Kyriacou K

    更新日期:2015-03-01 00:00:00

  • Increased content of thiobarbituric acid-reactive substances and hydrogen peroxide in the expired breath condensate of patients with stable chronic obstructive pulmonary disease: no significant effect of cigarette smoking.

    abstract::The imbalance between oxidants and antioxidants is known to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Cigarette smoking is the most frequent factor responsible for development of COPD by leading to oxidant overload in the lower airways, due to presence of its own oxida...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1053/rmed.1999.0574

    authors: Nowak D,Kasielski M,Antczak A,Pietras T,Bialasiewicz P

    更新日期:1999-06-01 00:00:00

  • Helicobacter pylori seroprevalence in patients with chronic bronchitis.

    abstract:AIM:A high rate of seropositivity for antibodies against Helicobacter pylori has been found in many extra-gastrointestinal diseases. In addition, it has been reported that the risk of chronic bronchitis may be increased in subjects infected with H. pylori. This study was designed to determine the H. pylori seroprevalen...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.rmed.2005.02.036

    authors: Kanbay M,Gur G,Akcay S,Yilmaz U

    更新日期:2005-10-01 00:00:00

  • Long-term macrolide maintenance therapy in non-CF bronchiectasis: evidence and questions.

    abstract::Macrolide antibiotics have anti-inflammatory and immunomodulatory properties in addition to antibacterial activity. Until recently, only a small number of studies evaluating macrolides in patients with non-cystic fibrosis (CF) bronchiectasis had been published. These were open-label, uncontrolled, short-duration studi...

    journal_title:Respiratory medicine

    pub_type: 杂志文章,评审

    doi:10.1016/j.rmed.2014.09.005

    authors: Haworth CS,Bilton D,Elborn JS

    更新日期:2014-10-01 00:00:00

  • T-cell activation by organic dust in vitro.

    abstract::Inhalation of swine dust causes intense airway inflammation with a multifold increase of inflammatory cells and lymphocyte activation as assessed by bronchoalveolar lavage. To further investigate the mechanism for lymphocyte activation the present in vitro study focuses on the lymphocyte response to swine dust in whol...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1053/rmed.2000.0828

    authors: Müller-Suur C,Larsson PH,Larsson K

    更新日期:2000-08-01 00:00:00

  • Inhibitory effects of Montelukast on mediator release by nasal epithelial cells from asthmatic subjects with or without allergic rhinitis.

    abstract:AIMS:This study tested inhibitory effects of in vitro Montelukast treatment on nasal airway epithelial cells (AEC) cultured from asthmatic patients treated with Montelukast with and without concomitant allergic rhinitis. We further examined the effect of Montelukast withdrawal in these patients on cytokine release from...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2013.09.006

    authors: Scaife A,Miller D,Spiteri-Cornish D,Turner SW,Devereux GS,Walsh GM

    更新日期:2013-12-01 00:00:00

  • Effects of allergen exposure on methacholine and AMP-induced air trapping in pollen-sensitive subjects.

    abstract:BACKGROUND:The effect of pro-inflammatory stimuli on bronchoconstrictor-induced air trapping has not been studied. OBJECTIVE:To determine the effect of natural allergen exposure, a pro-inflammatory stimulus, on methacholine- and adenosine 5'-monophospate (AMP)-induced air trapping. METHODS:Airway responsiveness to me...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2010.11.023

    authors: Lopez V,Prieto L,Perez C,Barato D,Marin J

    更新日期:2011-06-01 00:00:00

  • Comparison of titrable thermoplastic versus custom-made mandibular advancement device for the treatment of obstructive sleep apnoea.

    abstract:BACKGOUND AND OBJECTIVES:The disadvantages of custom-made mandibular advancement devices (MAD) for obstructive sleep apnoea (OSA) therapy are the cost and delay required to manufacture the device. This study aimed to evaluate the efficacy of a titrable, thermoplastic MAD compared to a custom-made MAD for OSA therapy. ...

    journal_title:Respiratory medicine

    pub_type: 临床试验,杂志文章

    doi:10.1016/j.rmed.2017.08.004

    authors: Gagnadoux F,Nguyen XL,Le Vaillant M,Priou P,Meslier N,Eberlein A,Kun-Darbois JD,Chaufton C,Villiers B,Levy M,Trzépizur W,Launois S

    更新日期:2017-10-01 00:00:00

  • Nocturnal oxygen and hypercapnic ventilatory response in patients with congestive heart failure.

    abstract::Patients with congestive heart failure and Cheyne-Stokes respiration have a low arterial oxygen saturation, especially during sleep, which can be increased by breathing oxygen. Chronic alterations in blood gases are known to modulate the hypercapnic ventilatory response (HCVR). We therefore evaluated whether the HCVR ...

    journal_title:Respiratory medicine

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1016/s0954-6111(98)90286-4

    authors: Andreas S,von zur Mühlen F,Stevens J,Kreuzer H

    更新日期:1998-03-01 00:00:00

  • Defective efferocytosis by alveolar macrophages in IPF patients.

    abstract:RATIONALE:Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive fibrosing interstitial pneumonia. The pathogenicity of IPF has been widely investigated but still remains to be clarified. Efferocytosis, the specialized recognition and ingestion of apoptotic cells by phagocytes, is essential for the resolution of...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2012.08.020

    authors: Morimoto K,Janssen WJ,Terada M

    更新日期:2012-12-01 00:00:00

  • Does dipyrone have any effect on respiratory function in COPD patients?

    abstract:OBJECTIVE:Dipyrone (Novalgin) is an effective analgesic, antipyretic agent also with spasmolytic effects on various types of smooth muscles. It has recently been reported that dipyrone relaxes tracheal smooth muscle of guinea pig. In this present study, we aimed to investigate whether this and previously reported in vi...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2005.09.002

    authors: Gulmez SE,Tulunay FC,Beder S,Kayacan O,Karnak D

    更新日期:2006-05-01 00:00:00

  • Bronchoalveolar lavage quality influences the T4/T8 ratio in sarcoidosis.

    abstract:BACKGROUND:Sarcoidosis is characterised by a T-lymphocytic alveolitis with a typically increased T4/T8 ratio. The diagnostic value of this ratio is under debate. AIM OF THE WORK:We prospectively evaluated the influence of BAL pre-lavage and the impact of bronchial contamination on BAL differential cell count in 108 BA...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2006.11.027

    authors: Reichenberger F,Kleiber B,Baschiera B,Bubendorf L,Brutsche M,Dalquen P,Tamm M

    更新日期:2007-09-01 00:00:00

  • The 24 h duration of bronchodilator action of the salmeterol/fluticasone combination inhaler.

    abstract:INTRODUCTION:The duration of bronchodilator action of the long-acting beta agonist salmeterol when administered in the evening has not been investigated. In this study we have investigated whether a single evening dose of salmeterol, administered from the combination salmeterol/fluticasone (SFC) Accuhaler significantly...

    journal_title:Respiratory medicine

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1016/j.rmed.2004.10.001

    authors: Masoli M,Weatherall M,Ayling J,Williams M,Beasley R

    更新日期:2005-05-01 00:00:00

  • Factors related to tobacco use among teenagers.

    abstract:AIM:To examine tobacco use among teenagers, identify factors related to tobacco use, as well as evaluate the outcome of a smoking prevention program. METHODS:From age 7/8 to 14/15, annual questionnaires about asthma and allergy have been completed in the OLIN paediatric study in Northern Sweden. From 12/13 years, ques...

    journal_title:Respiratory medicine

    pub_type: 杂志文章

    doi:10.1016/j.rmed.2006.07.001

    authors: Hedman L,Bjerg A,Perzanowski M,Sundberg S,Rönmark E

    更新日期:2007-03-01 00:00:00