Search results for "ORC"
showing 10 items of 4623 documents
Effect of Salmeterol on Seasonal Changes in Airway Responsiveness and Exhaled Nitric Oxide in Pollen-Sensitive Asthmatic Subjects
2002
Objective Using a model of natural allergen exposure, we examined the effect of regular treatment with salmeterol on allergen-induced changes in airway responsiveness and exhaled nitric oxide (ENO). Design Double-blind, randomized, parallel-group study. Setting Specialist allergy unit in a university hospital. Patients Asthmatic patients sensitized to pollen allergens were randomly allocated to monotherapy with salmeterol (n = 14) or placebo (n = 13). Interventions Salmeterol, 25 μg, and placebo inhalers, two puffs bid, for 6 weeks. Measurements Spirometry, the level of a provocative concentration of a substance (methacholine) causing a 20% fall in FEV 1 (PC 20 ), the PC 20 level for adenos…
The Effect of Spirometry on Bronchial and Alveolar Nitric Oxide in Subjects with Asthma
2013
The effect of spirometric maneuvers on exhaled nitric oxide (NO) at the constant flow rate of 50 ml/s (FE(NO)) has been studied with equivocal results. Furthermore, the effects of spirometry on bronchial NO flux (J'aw(NO)) and alveolar NO (CA(NO)), two measurements increasingly being used in clinical and research protocols, are unknown. The aim of this study was to evaluate the effect of spirometry on FE(NO), J'aw(NO), and CA(NO) in adults with asthma.Forty-four adults with asthma were studied. To assess the impact of exhaled NO measurement itself on exhaled NO values, FE(NO), J'aw(NO), and CA(NO) were obtained twice, at baseline and after a resting period of 10 min. Then spirometry (with o…
Airway Responsiveness to Histamine in Patients Refractory to Repeated Exercise
1988
To investigate the mechanisms contributing to refractoriness in exercise-induced asthma (EIA), airway responsiveness to histamine was studied in eight asthmatic patients. Patients were included in the study on the basis of their refractory response to multiple exercise challenges. Incremental challenges with inhaled histamine were performed at rest and 40 minutes after single and paired exercise tests. The geometric mean histamine concentration required to produce a 20 percent fall in FEV1 (PC20) for the challenge after paired exercise test (4.34 mg/ml) was significantly higher (p greater than 0.001) than those for the challenges after a single exercise (1.05 mg/ml) and for the challenge at…
Effects of Inhaled Fenoterol on the Circadian Rhythm of Expiratory Flow in Allergic Bronchial Asthma
1983
Metered-dose aerosol treatment with fenoterol for three consecutive days, in eight patients suffering from allergic asthma, caused the disappearance of FEV1 and MEF50 circadian rhythm. We attribute such behavior to the suppression of the bronchomotor tone induced by fenoterol. The administration on different days of a single dose of fenoterol aerosol in another group of eight patients pointed out the variability of the effects of the drug at different hours of the day. We believe the results obtained are important for a better dosage and time distribution of the therapy with beta2 agonists.
Characteristics and Prognostic Value of Morning Dipping of Peak Expiratory Flow Rate in Stable Asthmatic Subjects
1985
Characteristics and prognostic relevance of morning dip of peak expiratory flow rate (PEFR) were evaluated in stable asthmatic subjects. Among 246 outpatients monitored four times daily for two weeks, 38 (group A) showed a significant difference between morning reading of PEFR and each of the others; they were compared to 38 randomly selected patients (group B) not showing morning dip in PEFR. Less frequent seasonal course, extrinsic pathogenesis, and sensitization to mites characterized group A; starting airflow limitation was more severe in those with morning dip, but no significant difference between mean PEFR measured throughout two weeks was found. At 6 to 12 weeks, morning dip was not…
Effect of QVA149 on lung volumes and exercise tolerance in COPD patients: The BRIGHT study
2014
Summary Introduction QVA149 is a novel, inhaled, once-daily dual bronchodilator containing a fixed-dose combination of the long-acting β 2 -agonist indacaterol and the long-acting muscarinic antagonist glycopyrronium (NVA237), for the treatment of chronic obstructive pulmonary disease (COPD). This study evaluated the effects of QVA149 on exercise tolerance, hyperinflation, lung function and lung volumes versus placebo and tiotropium. Methods Patients with moderate-to-severe COPD were randomized to QVA149 110/50 μg, placebo or tiotropium 18 μg once daily in a blinded, 3-period crossover study for 3 weeks. The primary endpoint was exercise endurance time at Day 21 for QVA149 versus placebo. R…
Omalizumab in patients with severe persistent allergic asthma in a real-life setting in Germany
2009
Omalizumab is a humanized monoclonal anti-immunoglobulin E (IgE) antibody indicated in Europe for the treatment of uncontrolled severe persistent allergic (IgE-mediated) asthma despite optimal therapy with inhaled corticosteroids and long-acting beta(2) agonists. Between 2005 and 2007 280 patients (58% female, mean age 44+/-16 yrs., 46% on oral corticosteroids, median serum IgE level 235IU/ml) who met the EU criteria for add-on therapy with anti-IgE were treated prospectively with omalizumab by 134 physicians as part of a post-marketing surveillance trial and were followed-up for 6 months. The median follow-up time was 195 days, the patients were treated with a median dose of 450mg omalizum…
Cigarette Smoking, But Not Sensitization toAlternaria, Is Associated with Severe Asthma in Urban Patients
2001
Hereditary susceptibility and allergen exposure have been identified as general risk factors for asthma. However, risk factors for severe asthma still remain to be identified. To further assess and quantify risk factors associated with severe asthma in adult patients apart from clinical exacerbations, 306 randomly selected subjects (mean age 40+/-17 years, 46% males) presenting to an inner city pulmonary practice between 1995 and 1996 were retrospectively investigated. Of these, 117 patients were atopic, 112 had current asthma, and 22 asthmatics had severe asthma. Risk factors associated with atopy were family history of atopy and any domestic pet ownership (OR: 3.1, 95% CI: 1.64-6.1). Asth…
Prospective evaluation of current asthma control using ACQ and ACT compared with GINA criteria
2011
Background The goal of asthma treatment is to achieve and maintain current best control and reduce future risk of exacerbations and long-term morbidity. Objective To prospectively compare current asthma control as defined by ACQ (asthma control questionnaire) and ACT (asthma control test) criteria with the GINA (Global Initiative for Asthma) classification in treated patients in a real-life setting. Methods In 150 adult patients (48% male, age 46.3 ± 14.4 years., forced expiratory volume in 1 second [FEV 1 ], 2.3 ± 0.9 L or 78.5 ± 21.8% pred.), asthma control was evaluated using the GINA classification as the "true" and ACQ-7, ACQ-5, and ACT as "predictor" criteria. The relationship between…
Measurement of Fractional Exhaled Nitric Oxide: Comparison of Three Different Analysers
2019
<b><i>Background:</i></b> Fractional exhaled nitric oxide (FeNO) is a surrogate marker for airway inflammation, supporting the diagnostic pathway and treatment decisions for asthma patients. <b><i>Objectives:</i></b> Aim of this study was to compare the new analyser Vivatmo pro (Bosch, BV) with NIOX VERO (Circassia, CN) and CLD (Ecomedics, EC). <b><i>Methods:</i></b> In 100 asthmatics (median 53 years [range 20–87], 62% female, 86% on inhaled corticosteroids [mean 1,300 μg beclomethasone dipropionate or equivalent], 35% treated with biologics) 2 FeNO measurements per device were performed. Additionally, the success rate…