Combined inhaled beta-agonist and anticholinergic agents for emergency management in adults with asthma

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Abstract

Inhaled short-acting anticholinergics (SAAC) and short-acting beta₂-agonists (SABA) are effective therapies for adult patients with acute asthma who present to the emergency department (ED). It is unclear, however, whether the combination of SAAC and SABA treatment is more effective in reducing hospitalisations compared to treatment with SABA alone.

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Most cited references 57

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Clinical management of asthma in 1999: the Asthma Insights and Reality in Europe (AIRE) study.

K. F. Rabe, P Vermeire, J. Soriano … (2000)

Asthma management guidelines provide recommendations for the optimum control of asthma. This survey assessed the current levels of asthma control as reported by patients, which partly reflect the extent to which guideline recommendations are implemented. Current asthma patients were identified by telephone by screening 73,880 households in seven European countries. Designated respondents were interviewed on healthcare utilization, symptom severity, activity limitations and asthma control. Current asthma patients were identified in 3,488 households, and 2,803 patients (80.4%) completed the survey. Forty-six per cent of patients reported daytime symptoms and 30% reported asthma-related sleep disturbances, at least once a week. In the past 12 months, 25% of patients reported an unscheduled urgent care visit, 10% reported one or more emergency room visits and 7% reported overnight hospitalization due to asthma. In the past 4 weeks, more patients had used prescription quick-relief medication (63%) than inhaled corticosteroids (23%). Patient perception of asthma control did not match their symptom severity; approximately 50% of patients reporting severe persistent symptoms also considered their asthma to be completely or well controlled. The current level of asthma control in Europe falls far short of the goals for long-term asthma management. Patients' perception of asthma control is different from their actual asthma control.

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Asthma control in the Asia-Pacific region: the Asthma Insights and Reality in Asia-Pacific Study.

Pham Long Trung, Amartya Mukhopadhyay, Joan B Soriano … (2003)

Few data on asthma management are available for the Asia-Pacific region. This study examined asthma symptoms, health care use, and management in the Asia-Pacific region. We performed a cross-sectional survey, followed by administration of a questionnaire in a face-to-face setting in the respondents' homes in their language of choice. Urban centers in 8 areas were surveyed: China, Hong Kong, Korea, Malaysia, The Philippines, Singapore, Taiwan, and Vietnam. A population sample of 3207 respondents with physician-diagnosed asthma was identified by screening 108,360 households. Daytime asthma symptoms were reported by 51.4% of respondents, and 44.3% reported sleep disturbance caused by asthma in the preceding 4 weeks. At least 2 in every 5 respondents (43.6%) had been hospitalized, attended a hospital emergency department, or made unscheduled emergency visits to other health care facilities for treatment of asthma during the previous 12 months. Overall, 15.3% of respondents reported that they had required admission to the hospital for asthma treatment. Asthma severity correlated with the frequencies of hospitalizations and emergency visits for asthma in the past year. Even in those patients with severe persistent asthma, 34.3% regarded their disease as being well or completely controlled. Current use of an inhaled corticosteroid was reported by only 13.6% of respondents, and 56.3% used quick-relief bronchodilators. Absence from school and work in the past year was reported by 36.5% of children and 26.5% of adults. As reported for other regions, current levels of asthma control in the Asia-Pacific region fall markedly short of goals specified in international guidelines for asthma management.

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Tiotropium improves lung function in patients with severe uncontrolled asthma: a randomized controlled trial.

Martina Gahlemann, Ralf Sigmund, Bernd Disse … (2011)

Some patients with severe asthma remain symptomatic and obstructed despite maximal recommended treatment. Tiotropium, a long-acting inhaled anticholinergic agent, might be an effective bronchodilator in such patients. We sought to compare the efficacy and safety of 2 doses of tiotropium (5 and 10 μg daily) administered through the Respimat inhaler with placebo as add-on therapy in patients with uncontrolled severe asthma (Asthma Control Questionnaire score, ≥ 1.5; postbronchodilator FEV₁, ≤ 80% of predicted value) despite maintenance treatment with at least a high-dose inhaled corticosteroid plus a long-acting β₂-agonist. This was a randomized, double-blind, crossover study with three 8-week treatment periods. The primary end point was peak FEV₁ at the end of each treatment period. Of 107 randomized patients (54% female patients; mean, 55 years of age; postbronchodilator FEV₁, 65% of predicted value), 100 completed all periods. Peak FEV₁ was significantly higher with 5 μg (difference, 139 mL; 95% CI, 96-181 mL) and 10 μg (difference, 170 mL; 95% CI, 128-213 mL) of tiotropium than with placebo (both P < .0001). There was no significant difference between the active doses. Trough FEV₁ at the end of the dosing interval was higher with tiotropium (5 μg: 86 mL [95% CI, 41-132 mL]; 10 μg: 113 mL [95% CI, 67-159 mL]; both P < .0004). Daily home peak expiratory flow measurements were higher with both tiotropium doses. There were no significant differences in asthma-related health status or symptoms. Adverse events were balanced across groups except for dry mouth, which was more common on 10 μg of tiotropium. The addition of once-daily tiotropium to asthma treatment, including a high-dose inhaled corticosteroid plus a long-acting β₂-agonist, significantly improves lung function over 24 hours in patients with inadequately controlled, severe, persistent asthma. Copyright © 2011 American Academy of Allergy, Asthma & Immunology. Published by Mosby, Inc. All rights reserved.