Abstract：
BACKGROUND:Although FEV1/FVC ratio has been shown to be negatively associated with longer duration of asthma; an association between RV/TLC ratio and longer duration of asthma has not been explored. MATERIAL AND METHODS:Patients with established asthma for more than a year and met inclusion and exclusion criteria were recruited. Data obtained by questionnaire after informed consent was obtained, Pulmonary function tests and laboratory results were collected through chart review. Correlation and multiple linear regressions were used to analyze the data. RESULTS:Among the 93 subjects, 61 were women. The mean age of patients was 58 ± 15 years, and the mean duration of asthma was 21 ± 18 years. The ethnic composition included: Caucasians 64%, Hispanics 28% and other groups 8%. The FEV1/FVC ratio was not significantly associated with duration of asthma (R2 = 0.15, p = 0.05). However, the RV/TLC ratio was significantly associated with duration of asthma (R2 = 0.46, p < 0.001). CONCLUSION:RV/TLC ratio may be a better indicator than FEV1/FVC ratio to detect airway obstruction related to longer duration of asthma. Lung volume measurements should be done in addition to spirometry to detect changes related to airway obstruction in patients with longer duration of asthma.
journal_name
Respir Medjournal_title
Respiratory medicineauthors
Tiwari A,Rahman K,Abejie B,Jain VV,Vempilly JJdoi
10.1016/j.rmed.2017.01.011subject
Has Abstractpub_date
2017-03-01 00:00:00pages
44-48eissn
0954-6111issn
1532-3064pii
S0954-6111(17)30019-7journal_volume
124pub_type
杂志文章abstract：:The fine particle dose delivered via dry powder inhalers (DPIs) is often affected by the inspiratory flow rate generated during inhalation. This has clinical implications, since the fine particle dose determines the amount of drug reaching the lungs. With Easyhaler DPI the fine particle dose remains relatively constan...
journal_title：Respiratory medicine
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1053/rmed.2000.0959
更新日期：2000-12-01 00:00:00
abstract：BACKGROUND:Exhaled breath condensate (EBC) is simple to collect and as such a non-invasive method that has attracted substantial interest in the last few years. However, several methodological concerns have been raised and it has been difficult to reproduce results between different centres. Because of low concentratio...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2005.04.007
更新日期：2006-01-01 00:00:00
abstract：:The 72 kDa matrix metalloproteinase (MMP-2) and the 92 kDa matrix metalloproteinase (MMP-9), are type IV collagenases that have been implicated as important factors in cancer invasion and metastasis formation. We have used quantitative zymography and computer-assisted image analysis to measure the levels of MMP-9 and ...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1053/rmed.2000.0923
更新日期：2001-01-01 00:00:00
abstract：:Synovial sarcoma most commonly occurs in the peri-articular regions of the extremities. The present report describes a rare case of primary biphasic synovial sarcoma of the pleura in an 18-year-old female. The diagnosis was made on the basis of light microscopy, immunohistochemistry, electron microscopy and the charac...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/s0954-6111(97)90093-7
更新日期：1997-10-01 00:00:00
abstract：OBJECTIVE:To examine medication adherence and persistence among COPD patients during their last year of life. DATA SOURCE:National VA databases were used to identify patients who had COPD and died between 1999 and 2003. STUDY DESIGN:We examined use of inhaled corticosteroids (ICS), long acting beta(2) agonists (LABA)...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2008.11.004
更新日期：2009-04-01 00:00:00
abstract：BACKGROUND:Reduction in 30-day readmission rate after chronic obstructive pulmonary disease (COPD)-related hospitalization is a national objective. However, little is known about trends in readmission rates in recent years, particularly in priority populations defined by the Agency for Healthcare Research and Quality (...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2017.07.058
更新日期：2017-09-01 00:00:00
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
更新日期：2011-06-01 00:00:00
abstract：BACKGROUND:Intrapleural recombinant tissue plasminogen activator (r-TPA) has been successfully evaluated in pediatric patients with complicated parapneumonic pleural effusion (CPE) and pleural empyema (PE). Yet, there is no data concerning r-TPA in adults with CPE/PE. The aim of our study was to investigate the efficac...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2008.08.012
更新日期：2008-12-01 00:00:00
abstract：:Aminophylline administration was compared in 43 patients who died from asthma and 43 matched controls who were admitted, suffering from acute asthma, to hospitals in the North East Thames Region. A computer program, which used information about individual characteristics, medical history and drug intake, was employed ...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/s0954-6111(89)80035-6
更新日期：1989-05-01 00:00:00
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journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2005.03.028
更新日期：2005-12-01 00:00:00
abstract：:Inhalation of on-demand salbutamol (ODS) several times daily is sometimes the only beta2-agonist prescribed in moderate persistent asthma, whereas a long-acting beta2-agonist should be added. This trial aimed to compare the efficacy of formoterol dry-powder capsule 12 microg b.i.d. (Foradil) and ODS in patients with m...
journal_title：Respiratory medicine
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1053/rmed.2000.0972
更新日期：2001-01-01 00:00:00
abstract：UNLABELLED:Obesity is a major risk factor for poorly controlled asthma, but the reasons for poor asthma control in this patient population are unclear. Symptoms of depression have been associated with poor asthma control, and increase with higher body mass index (BMI). The purpose of this study was to assess whether de...
journal_title：Respiratory medicine
pub_type： 临床试验,杂志文章
doi：10.1016/j.rmed.2014.05.012
更新日期：2014-08-01 00:00:00
abstract：:A survey was conducted in a metropolitan suburb to examine family clusters of pulmonary tuberculosis patients and related factors. Firstly, a descriptive study was done based on the review of tuberculosis registration cards over a 11-yr period. Of 1106 cases, 109 (9.9%) were found to occur in households which had alre...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/0954-6111(93)90093-f
更新日期：1993-04-01 00:00:00
abstract：:Asthma and wheezing illnesses carry a significant burden of disease during childhood. Prevalence studies have the capacity to provide invaluable insights into the nature of these common conditions. As part of the Isle of Wight Whole Population Birth Cohort Study (n=1456) we have examined wheezing and asthma developmen...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1053/rmed.2001.1236
更新日期：2002-03-01 00:00:00
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journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2012.03.002
更新日期：2012-08-01 00:00:00
abstract：OBJECTIVE:The possible effect of the various meteorological variables on the incidence of upper and lower respiratory tract infections (RTIs) has intrigued the scientific community for decades. METHODS:We performed a retrospective analysis regarding the association between meteorological variables and clinical data fo...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2007.12.010
更新日期：2008-05-01 00:00:00
abstract：PURPOSE:We investigated the adverse events (AEs) and treatment completion rates of a 3 month course of once-weekly isoniazid and rifapentine (3H1P1) in South Korean health care workers (HCWs) with latent tuberculosis infection (LTBI). METHODS:HCWs who were candidates for LTBI treatment were enrolled from two tertiary ...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2019.10.005
更新日期：2019-01-01 00:00:00
abstract：:Active smoking is an increasing problem amongst U.K. teenagers. The smoking habits of a cohort of 14-16-year-olds were determined and the association between regular active smoking and domestic and social factors investigated. Current smoking habits of a cohort of 2289 14-16-year-olds were assessed using a simple post...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1053/rmed.1999.0746
更新日期：2000-04-01 00:00:00
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
更新日期：2003-08-01 00:00:00
abstract：:The aim of this study was to compare the efficacy and safety of salmeterol/fluticasone propionate combination product (SFC) with fluticasone propionate (FP) plus oral montelukast (M) over 12 weeks in symptomatic asthma patients. The study was a multinational, randomised, double-blind, double-dummy, parallel-group desi...
journal_title：Respiratory medicine
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1053/rmed.2003.1436
更新日期：2003-03-01 00:00:00
abstract：BACKGROUND:It is essential to recognize and treat findings that can simulate or worsen symptoms to improve asthma control and thereby to reduce costs. Guidelines highlight a paranasal (PS) and chest computed tomography (CT) scan as a tool for disease evaluation and, although they suggest its indication in patients whom...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2020.106013
更新日期：2020-08-01 00:00:00
abstract：:Recent developments in intrabronchial administration of insulin raise lung function in patients with type I diabetes as important issue. Several studies in adults report abnormalities of lung function of these patients. The aim of this study was to investigate lung function in children with type I diabetes. Twenty-sev...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1053/rmed.2002.1402
更新日期：2002-12-01 00:00:00
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
更新日期：2007-03-01 00:00:00
abstract：:Snoring and obstructive sleep apnoea/hypopnoea syndrome (OSAHS) are often treated with mandibular repositioning splints (MRS), but the efficacy and satisfaction of them has not been comprehensively addressed. A survey on the use of and satisfaction with MRS was posted to 177 patients referred by a hospital orthodontic...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2004.07.007
更新日期：2005-03-01 00:00:00
abstract：:We have analysed the clinical manifestations of nine patients with brief upper airway dysfunction (BUAD) who attended the thoracic department of a major teaching hospital between 1987 and 1991. Episodes of BUAD developed within 1-4 months of presentation in three patients but were undiagnosed for 2.5-12.5 years in six...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/0954-6111(94)90024-8
更新日期：1994-02-01 00:00:00
abstract：INTRODUCTION:The aim was to investigate temporal variation in Health-Related Quality of Life (HRQL) and factors influencing low HRQL, in patients with asthma. MATERIAL AND METHODS:Questionnaire data on patient characteristics and the mini-Asthma Quality of Life Questionnaire (mini-AQLQ) scores from two separate cohort...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2017.10.010
更新日期：2017-11-01 00:00:00
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journal_title：Respiratory medicine
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.rmed.2006.12.002
更新日期：2007-07-01 00:00:00
abstract：BACKGROUND:Nitrite in exhaled breath condensate (EBC) has been shown to be elevated in cystic fibrosis (CF), while exhaled nitric oxide (FENO) is paradoxically low. This has been argued to reflect increased metabolism of NO while its diffusion is obstructed by mucus. However, we wanted to study the possible influence o...
journal_title：Respiratory medicine
pub_type： 杂志文章
doi：10.1016/j.rmed.2008.09.009
更新日期：2009-02-01 00:00:00
abstract：:Although the principles of asthma management are well established in Europe, the available data indicate that asthma in patients is not well controlled. Many patients derive incomplete benefit from their inhaled medication because they do not use inhaler devices correctly and this may compromise asthma control. The Ae...
journal_title：Respiratory medicine
pub_type： 杂志文章,评审
doi：10.1016/j.rmed.2006.01.008
更新日期：2006-09-01 00:00:00
abstract：INTRODUCTION:Older patients are the most prevalent age cohort requiring bronchoscopy. Prior sedation should be offered to improve patient comfort and operator technical ease. Older patients have increased sensitivity to centrally acting drugs increasing the procedural risk. This perceived risk may limit access to bronc...
journal_title：Respiratory medicine
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1016/j.rmed.2004.06.002
更新日期：2005-02-01 00:00:00
