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PubMed1999

Two subphenotypes of childhood asthma that differ in maternal and paternal influences on asthma risk.

Asthma is a phenotypically heterogeneous disease. Two subgroups are defined here based initially on skin test reactivity to the allergen Alternaria at age 6 from among a large population of children born and raised in the Southwestern desert environment of Tucson, Arizona. When compared with asthma among Alternaria-positive subjects, asthma among Alternaria-negative subjects was associated with lower levels of total serum IgE, no relation to local aeroallergen skin tests, a younger age at diagnosis, greater remittance by age 11, and more frequent wheezing lower respiratory illnesses (LRIs) in the first year of life. Despite the difference in total serum IgE, however, IgE concentrations were significantly higher in each asthma group compared with its respective control group. Asthma in each parent contributed approximately equivalent risk for Alternaria-positive asthma in the child. However, neither parental skin test sensitization nor total serum IgE levels provided risk for asthma in the child. Inheritance patterns for Alternaria-negative asthma revealed a contribution from maternal but not paternal asthma. Thus, dividing asthma in children at age 6 into Alternaria-positive and Alternaria-negative groups identifies subphenotypes that are further distinguished by differences in phenotypic markers and parental influences.

Alternaria↗
PubMed2001

Body mass index and asthma in adults in families of subjects with asthma in Anqing, China.

We conducted a cross-sectional study of 7,109 adults from families of subjects with asthma in the province of Anhui, China. Asthma was defined either as a combination of physician-diagnosed asthma, airway responsiveness to methacholine at < or = 25 mg/ml and two or more respiratory symptoms or asthma attacks ("asthma"); or as a combination of airway responsiveness to methacholine at < or = 8 mg/ml and two or more respiratory symptoms or asthma attacks ("symptomatic airway hyperresponsiveness [AHR]"). After adjusting for intensity of cigarette smoking and other variables, both extremes of the body mass index (BMI) distribution were associated with symptomatic AHR in men and women (p < 0.01). In the multivariate analysis, both under- and overweight were associated with asthma in women, and underweight was associated with asthma in men. Among men, those with BMIs of 16 and 30 kg/m(2) had 2.5 and 2.3 times higher odds of symptomatic AHR, respectively, than those whose BMI was 21 kg/m(2) (95% CI for OR(16 vs. 21 kg/m)(2) = 1.4 to 3.8; 95% CI for OR(30) (vs.) (21) (kg/m)(2) = 1.2 to 5.0). Among women, those with BMIs of 16 and 30 kg/m(2) had 2.0 and 2.3 times higher odds of symptomatic AHR than those whose BMI was 21 kg/m(2) (95% CI for OR(16) (vs.) (21) (kg/m)(2) = 1.3 to 3.1; 95% CI(30) (vs.) (21) (kg/m)(2) = 1.2 to 4.5). Among adults in families of subjects with asthma living in rural China, both underweight and overweight are associated with an increased risk of asthma.

Adult↗
PubMed1994

Community-based asthma care: trial of a "credit card" asthma self-management plan.

Although asthma self-management plans are widely recommended as essential in the long-term treatment of adult asthma, there have been few studies examining their use. Our objective was to assess the effect of a "credit card" adult asthma self-management plan in a community experiencing major health problems from asthma, by means of a before and after intervention trial of the efficacy of the "credit card" plan, when introduced through community-based asthma clinics. The participants were 69 Maori people with asthma. The "credit card" plan consisted of written guidelines for the self-management of asthma, based on self-assessment of asthma severity, printed on a plastic card. On one side, management guidelines were based on the interpretation of peak expiratory flow rate (PEFR) recordings, whilst the reverse side was based on symptoms. The outcome measures used were before and after comparison of markers of asthma morbidity and requirement for acute medical treatment; and a structured questionnaire assessing the acceptability and use of the credit card plan. Following the introduction of the plan, the mean PEFR increased from 347 to 389 l.min-1, the percentage of nights woken fell from 30.4 to 16.9%, and the number of days "out of action" fell from 3.8 to 1.7%. The requirements for acute medical treatment also fell during the intervention period. Most participants commented favourably on the content and usefulness of the plan. In the situation of worsening asthma, 28% of subjects found the peak flow side of the card most helpful, 7% the symptoms side, and 48% found both sides equally helpful.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1997

Asthma self-management programmes in a population of Italian children: a multicentric study. Italian Study Group on Asthma Self-Management Programmes.

This study was designed to answer three main questions: 1) Does asthma self-management education reduce asthma morbidity? 2) Are the two programmes "Living With Asthma" and "Open Airways" equally effective in doing so? 3) Is a shortened version of these programmes (4 weeks) as effective as the longer original programme (8 weeks)? Twelve Italian centres of paediatric bronchopneumology selected 312 children with asthma, who were stratified by disease severity, gender and age, and then randomly assigned to an Experimental group which received an educational programme or to a Comparison group, which did not. Of the 312 children selected, 209 (114 Experimental and 95 Comparison) completed the educational protocol and a 1 year follow-up. Data recorded during the last 2 months of follow-up, 10 months after the educational intervention, showed that the Experimental group required significantly fewer emergency treatments: this reduction was more evident in the more severe asthma cases. In the Experimental, but not in the Comparison group, patients with more severe asthma consumed more medications than patients with milder asthma "Open Airways" yielded, in some cases, better results than "Living with Asthma": but a type 2 error is possible. The standard and the shortened programmes proved equally effective. In conclusion, following education, regardless of receiving a short or long educational programme, asthma patients use emergency care services less and use medications more appropriately in comparison with standard care without education. This suggests that short educational programmes can be highly cost-effective in children with asthma.

Asthma↗
PubMed2006

A brief targeted review of susceptibility factors, environmental exposures, asthma incidence, and recommendations for future asthma incidence research.

Relative to research on effects of environmental exposures on exacerbation of existing asthma, little research on incident asthma and environmental exposures has been conducted. However, this research is needed to better devise strategies for the prevention of asthma. The U.S. Environmental Protection Agency (EPA) and National Institute of Environmental Health Sciences held a conference in October 2004 to collaboratively discuss a future research agenda in this area. The first three articles in this mini-monograph summarize the discussion on potential putative environmental exposure; they include an overview of asthma and conclusions of the workshop participants with respect to public health actions that could currently be applied to the problem and research needs to better understand and control the induction and incidence of asthma, the potential role of indoor/outdoor air pollutants in the induction of asthma), and biologics in the induction of asthma. Susceptibility is a key concept in the U.S. EPA "Asthma Research Strategy" document and is associated with the U.S. EPA framework of protecting vulnerable populations from potentially harmful environmental exposures. Genetics, age, and lifestyle (obesity, diet) are major susceptibility factors in the induction of asthma and can interact with environmental exposures either synergistically or antagonistically. Therefore, in this fourth and last article we consider a number of "susceptibility factors" that potentially influence the asthmatic response to environmental exposures and propose a framework for developing research hypotheses regarding the effects of environmental exposures on asthma incidence and induction.

Asthma↗
PubMed1995

Mortality and markers of risk of asthma death among 1,075 outpatients with asthma.

BACKGROUND: According to national health statistics, mortality rates for asthma have been increasing steadily over the past decades. Mortality and markers of risk of death from asthma were studied among asthmatics attending a chest clinic in Copenhagen between 1974 and 1990. METHODS: The study group consisted of 1,075 asthmatics in whom the diagnosis of asthma had been verified by objective/paraclinical criteria; they were compared with a sex- and age-matched group of nonasthmatic patients. Both groups of subjects comprised 425 men (mean age, 37.3 years [SD 15.2]) and 650 women (mean age, 38.5 years [SD 16.0]), and the mean follow-up period was 8.6 years (SD 4.2) in both asthmatics and controls. RESULTS: Mortality from all causes was significantly increased in the asthmatic subjects (93 deaths) compared with the control group (41 deaths); relative risk [RR], 2.4; 95% confidence interval [CI], 1.6 to 3.4). The predominant cause of excess mortality was obstructive pulmonary disease, that is, status asthmaticus (14 vs 0 deaths, RR 8.2) and COPD not classified as status asthmaticus (19 vs 0 deaths, RR 8.3). Overall, 91% of the asthmatic cohort survived the mean follow-up period of almost 9 years compared with 96% of the controls. Mortality analysis employing the multiple regression model of Cox revealed that age, pack-years of smoking, eosinophilia, level of FEV1 percent predicted, and degree of reversibility in FEV1 were significant predictors of death from asthma, whereas no association was found between previous hospital admissions for asthma and subsequent death from asthma. In subjects with eosinophil (> 0.45 mia [10(9)/L]), the risk of dying from asthma was 7.4 (CI 2.8 to 19.7) greater than in those without eosinophilia. Compared with subjects with 15 to 24% reversibility in FEV1, the subjects with 25 to 49% and > 50% reversibility had a 2.7 and 7.0 higher risk of death from asthma, respectively. CONCLUSION: Mortality was significantly increased in asthmatics compared with matched controls, primarily because of death from acute and chronic asthma. Furthermore, the present findings suggest that eosinophilia and pronounced increase in FEV1 after bronchodilator are strong markers of subsequent risk of death from asthma.

Adult↗
PubMed2004

Evaluation of a program aimed at increasing referrals for asthma education of patients consulting at the emergency department for acute asthma.

BACKGROUND: Emergency department (ED) visits for asthma may reflect poor asthma control, often due to insufficient asthma education and medical follow-up. However, few patients consulting an ED for asthma are referred for education. AIMS: To describe a model for automatic referral to educational interventions targeting patients consulting at the ED for acute asthma, to demonstrate how this model can be integrated into current care, and to increase referrals for asthma education. METHODS: The program combines a short ED-based educational intervention with the goal of motivating patients and their families to pursue an educational program with an automatic referral to an asthma education center (AEC) after agreement with ED physicians. The program was implemented in nine acute care centers with a high number of ED visits for asthma. The main study parameter was the number of patients referred to an AEC after 4 months of program implementation, as compared with 4 months before. In addition, we assessed potential barriers to successfully establishing the program. RESULTS: In the first 4 months of the program, 1,104 patients were referred to an AEC, compared with 110 for the same period the year before; 106 patients (15%) patients could not be contacted, 114 patients (16.1%) refused the intervention, 488 patients (68.9%) made appointments, and 346 patients (48.9%, or 72.8% of scheduled patients) honored their appointments. CONCLUSION: We describe a model of educational intervention for asthmatic patients consulting at the ED. We found that ED professionals can motivate patients to attend an asthma education program and that an automatic referral process is well accepted by ED staff. Such intervention can help to reduce asthma-related morbidity, but local barriers to implementation of such program should be addressed.

Acute Disease↗
PubMed2005

Montelukast, compared with fluticasone, for control of asthma among 6- to 14-year-old patients with mild asthma: the MOSAIC study.

BACKGROUND: Guidelines recommend daily controller therapy for mild persistent asthma. Montelukast has demonstrated consistent benefit in controlling symptoms of asthma and may be an alternative, orally administered, nonsteroidal agent for treating mild asthma. METHODS: The Montelukast Study of Asthma in Children (MOSAIC study) was a 12-month, multicenter, randomized, double-blind, noninferiority trial to determine the effect of once-daily, orally administered montelukast (5 mg) (n = 495), compared with twice-daily, inhaled fluticasone (100 microg) (n = 499), on the percentage of asthma rescue-free days (RFDs) (any day without asthma rescue medication and with no asthma-related resource use). Patients 6 to 14 years of age had mild persistent asthma (average percentage of predicted forced expiratory volume in 1 second: 87.2%; RFDs at baseline: 64%). Montelukast would be considered not inferior to fluticasone if the upper limit of the 95% confidence interval for the difference in mean percentages of RFDs (fluticasone minus montelukast) was above -7% (a difference of approximately 2 days/month). RESULTS: The mean percentage of RFDs was 84.0% in the montelukast group and 86.7% in the fluticasone group. The least-squares mean difference was -2.8% (95% confidence interval: -4.7% to -0.9%), within the noninferiority limit of -7%. The proportion of patients requiring systemic corticosteroids and the number of patients with an asthma attack were greater in the montelukast group. Both montelukast and fluticasone were well tolerated. CONCLUSIONS: Montelukast was demonstrated to be not inferior to fluticasone in increasing the percentage of RFDs among 6- to 14-year-old patients with mild asthma. Secondary end points, including percentage of predicted forced expiratory volume in 1 second value, days with beta-receptor agonist use, and quality of life, improved in both groups but were significantly better in the fluticasone treatment group.

Acetates↗
PubMed2005

Keeping children with asthma out of hospitals: parents' and physicians' perspectives on how pediatric asthma hospitalizations can be prevented.

BACKGROUND: A total of 196,000 hospitalizations occur each year among the 9 million US children who have been diagnosed with asthma. Not enough is known about how to prevent pediatric asthma hospitalizations. OBJECTIVES: To identify the proportion of preventable pediatric asthma hospitalizations and how such hospitalizations might be prevented, according to parents and physicians of hospitalized children with asthma. METHODS: A cross-sectional survey was conducted of parents, primary care physicians (PCPs), and inpatient attending physicians (IAPs) of a consecutive series of all children who were admitted for asthma to an urban hospital in a 14-month period. RESULTS: The 230 hospitalized children had a median age of 5 years; most were poor (median annual family income: 13,356 dollars), were nonwhite (93%), and had public (74%) or no (14%) health insurance. Compared with children who were hospitalized for other ambulatory care-sensitive conditions, hospitalized children with asthma were significantly more likely to be African American (70% vs 57%), to be older, and not to have made a physician visit or telephone contact before admission (52% vs 41%). Only 26% of parents said that their child's admission was preventable, compared with 38% of PCPs and 43% of IAPs. The proportion of asthma hospitalizations that were assessed as preventable varied according to the source or combination of sources, from 15% for agreement among all 3 sources to 54% as identified by any 1 of the 3 sources. PCPs (83%) and IAPs (67%) significantly more often than parents (44%) cited parent/patient-related reasons for how hospitalizations could have been prevented, including adhering to and refilling medications, better outpatient follow-up, and avoiding known disease triggers. Parents (27%) and IAPs (26%) significantly more often than PCPs (11%) cited physician-related reasons for how hospitalizations could have been avoided, including better education by physicians about the child's condition, and better quality of care. Multivariate analyses revealed that an age > or =11 years and no physician contact before the hospitalization were associated with approximately 2 times the odds of a preventable asthma hospitalization. CONCLUSIONS: The proportion of asthma hospitalizations assessed as preventable varies from 15% to 54%, depending on the source. Adolescents and families who fail to contact physicians before hospitalization are at greatest risk for preventable hospitalizations. Many pediatric asthma hospitalizations might be prevented if parents and children were better educated about the child's condition, medications, the need for follow-up care, and the importance of avoiding known disease triggers.

Allergens↗
PubMed2006

Change in approach and delivery of medical care in children with asthma: results from a multicenter emergency department educational asthma management program.

OBJECTIVES: The Hawaii Child Asthma Research to Elevate Standards (CARES) Program implemented an emergency department (ED)-based education and management program to facilitate National Asthma Education and Prevention Program (NAEPP) guideline understanding among asthmatic children and their families, ED staff, and health care providers. METHODS: The multipronged approach used: (1) 2-phased prospective tracking system of ED asthma patients; (2) ED-based educational intervention for patients/families; and (3) asthma education for ED staff and community-based health care providers. Data were collected across 4 EDs during phase I (October 8, 2002, to October 1, 2003) and phase II (October 1, 2003, to July 8, 2004). Follow-up data were collected by telephone 3 weeks (phase I), and 3 weeks and 3 months (phase II) after the ED encounter. The patient/family intervention was delivered throughout phase II. During phase I, ED and community-based health care professionals developed strategies for building an integrated asthma care system. ED staff training was delivered before phase II. Continuing medical education for health care providers was delivered before and during the first month of phase II. RESULTS: Tracking data on 706 phase I and 353 phase II patient encounters revealed that the majority of patients with persistent asthma did not use long-term controller medications and did not possess a written asthma action plan. From preintervention to postintervention, the number of patients possessing a written asthma action plan increased from 48 to 322. Of 186 persistent asthmatics, 34 were using controller medications daily, 34 as needed, and 118 not at all. Daily use increased to 80 3 weeks postintervention and to 68 3 months postintervention. CONCLUSION: An ED-based childhood asthma tracking system can serve as a basis for designing and implementing an ED-based educational intervention. ED staff, primary care providers, and others can work together to promote asthma care.

Adolescent↗
PubMed2006

Asthma guideline use by pediatricians in private practices and asthma morbidity.

OBJECTIVE: We sought to examine whether pediatric clinicians in private, non-health maintenance organization practices could implement the national asthma guidelines and whether, when implemented, these guidelines would decrease medical services utilization and improve asthma care for children. METHODS: A trial of a disease management program (Easy Breathing II) involving 20 private pediatric practices in the greater Hartford, Connecticut area was conducted between January 1, 2001, and December 31, 2003. Demographic data on participating practitioners and patients were obtained from questionnaires. Medical services utilization data from claims were obtained from ConnectiCare, a regional managed care organization. RESULTS: Of the 16750 children enrolled in Easy Breathing II, 2458 were enrolled in ConnectiCare and 490 had asthma. Inhaled corticosteroid use increased in the community overall during the study period. After enrollment in Easy Breathing II, with adjustment for age, gender, ethnicity, asthma severity, season, and calendar year, children with persistent asthma experienced an additional 47% increase in inhaled corticosteroid use, a 56% reduction in outpatient visits, and a 91% decrease in emergency department visits for treatment of asthma. Adherence to national asthma guidelines for prescribing inhaled corticosteroids was 95%. Seventeen of the 20 practices are still using Easy Breathing, 5 years after program implementation. CONCLUSIONS: Pediatric primary care clinicians in private practice settings can implement an asthma management program patterned after the national asthma guidelines. When implemented, this program is successful in reducing medical services utilization for children with asthma. Just as differences in patterns of medical services utilization exist in private practices, compared with urban clinics, the impact of disease management on medical services utilization differs in private practices, compared with urban clinics.

Adolescent↗
PubMed1999

Prevalence of asthma and related symptoms in school-age children in São Paulo, Brazil--International Study of Asthma and Allergies in Children (ISAAC).

We studied the prevalence of asthma and related symptoms using a standard written questionnaire designed for the International Study of Asthma and Allergies in Children (ISAAC). The written questionnaire (questions 1-8 related to asthma) was applied to 3005 children aged 6-7 years and to 3008 children aged 13-14 years. The parents of the 6-7-year-old children answered the questionnaire, whereas the 13-14-year-old children answered the questionnaire themselves. Response rates were 72% in the 6-7-year-old group and 94% in the 13-14-year-old group. There was a slight predominance of females in the population studied (male:female ratio 0.94). In the group of the 6-7-year-old children, the prevalence of diagnosed asthma was 7.3% for boys and 4.9% for girls, and in the group of the 13-14-year-old children, the prevalence was 9.8% and 10.2% for boys and girls, respectively. Asthma severity was similar for both age groups, and wheezing following exercise was more frequent among the adolescents. In keeping with studies in other parts of the world, comparison between reported symptoms and diagnosed asthma revealed significantly lower frequency of diagnosed asthma, suggesting that in the population we have studied, asthma is underdiagnosed. Using a global cut-off score to define asthma, we found a significantly higher prevalence of asthma among 6-7-year-old boys, as compared to girls (23.8% vs. 20.4%), and no significant differences among adolescent boys and girls (22.5% and 21.9%, respectively).

Adolescent↗
PubMed1993

A prospective audit of asthma management following emergency asthma treatment at a teaching hospital.

OBJECTIVE: To audit the assessment and treatment of acute asthma and the subsequent application of the Australian Asthma Management Plan. DESIGN: Prospective audit of case notes with follow-up telephone questionnaire and clinical assessment at 8-12 weeks after discharge. SETTING: Tertiary-level teaching hospital. MAIN OUTCOME MEASURES: Comparison with published guidelines for acute and ongoing asthma management. RESULTS: Asthma severity was objectively assessed in the Primary and Emergency Care Department, with lung function performed in 95% of acute presentations. Clinical history and examination were documented completely in 28% of presentations. Corticosteroids were underused and there was inappropriate use of ipratropium bromide. At 8-12 weeks follow-up most patients were symptomatic with limited activity due to asthma (46%) and impaired lung function (66%). One-third of patients were undertreated. Asthma management skills were seriously inadequate: only 20% of patients were performing peak flow monitoring, and only 21% recalled receiving specific instructions for the management of future exacerbations. Inhaler technique was inadequate in one-third of patients and asthma knowledge was poor. These deficits were more frequent in patients not admitted to hospital. CONCLUSION: This audit identified suboptimal assessment and treatment of acute asthma, and deficits in the implementation of the Australian Asthma Management Plan following discharge. Patients in this audit were undertreated and not provided with the skills to manage future attacks of asthma.

Adolescent↗
PubMed1989

Asthma and chronic airflow limitation in the highlands of Papua New Guinea: low prevalence of asthma in the Asaro Valley.

The prevalence of asthma in the South Fore region of Papua New Guinea was found to be 7.3%, which is thought exceptionally high for highland areas in this country. To investigate the prevalence of asthma and of chronic airflow limitation in a different highland region with similar living conditions, adults and children from 7 villages in the Asaro Valley were interviewed. Questions were asked about smoking history and about past and present symptoms of cough, of shortness of breath, of chest tightness and of asthma. Of 743 adults interviewed, 206 underwent a clinical study with measurements of lung function, bronchial responsiveness and skin prick tests. Dust was collected from the floors and blankets of 36 houses for counts of house dust mites. We did not find any children with symptoms of asthma. Only 2 adults (0.3%) had symptoms consistent with asthma, and a further 6.2% had symptoms and/or lung function consistent with chronic airflow limitation. Most bronchial hyperresponsiveness was associated with asthma or with chronic airflow limitation. The prevalence of atopy was similar in the Asaro and South Fore populations, but the South Fore had higher house dust mite counts in blanket dust. The low prevalence of asthma in the Asaro Valley is unexplained in terms of factors normally associated with asthma. Because asthma in this area does not appear in childhood and only develops in a small proportion of adults, it may be of different aetiology to asthma in Caucasian populations.

Adult↗
PubMedDate not supplied

[The response to a specific bronchial provocation test and the evolution of occupational asthma. A longitudinal study in subjects with toluene diisocyanate-induced asthma].

The aim of this study was to investigate the progression and long-term consequences of occupational asthma and to evaluate the effect of the pattern of response to specific bronchoprovocation test (SBPT) in the prognosis of occupational asthma among 40 subjects with asthma due to toluene diisocyanate (TDI). Nine subjects had immediate asthma, 25 subjects had late asthma and 6 subjects had dual asthma. Respiratory symptoms, persistence of exposure to TDI and lung function have been investigated both at diagnosis and at follow-up examination. At follow-up examination, 70.0% of the subjects were not exposed to TDI, and only 14.3% of "non-exposed" subjects were completely asymptomatic. At follow-up examination, 71.4% of "exposed" subjects and 55.6% of "non-exposed" subjects were regularly treated with medications because of their asthma (no statistical difference). No significant differences have been found in symptoms prevalence or lung function between "exposed" and "non-exposed" subjects. After comparing the results obtained at diagnosis and at follow-up examination, a significant decrease in FVC both in "exposed" and "non-exposed" groups (p < 0.005 and p < 0.0005, respectively) and a significant decrement in FEV1 (p < 0.05) and FVC (p < 0.0005) among the subjects with late asthma, was found. We can conclude that, despite the removal from TDI exposure, occupational asthma can lead to permanent disability with important socio-economic consequences, and late response to SBPT may be a negative prognostic factor in TDI asthma.

Adult↗
PubMed1995

[Aspirin-induced asthma as an important type of bronchial asthma].

Aspirin-induced asthma (AIA) should be recognized as an important types of bronchial asthma for the following reasons. 1) The pathogenesis of AIA is specific. Inhibition of cyclooxygenase a (key enzyme for the production of prostanoids from arachidonic acid) by non-steroidal antiinflammatory drugs (NSAID) is an important trigger of asthma attacks. 2) The frequency of AIA is not low. It is estimated to be 9.8% in adults with chronic asthma. 3) Some clinical features of AIA are characteristic. Naso-sinus complications, such as rhinitis, chronic sinusitis, nasal polyposis, and anosmia, are commonly found in patients with AIA. 4) Glucocorticoids with succinate ester, which are commonly used to treat asthma attacks, induce asthma symptoms or provoke severe asthma attacks in 70% to 80% of patients with AIA. 5) Some patients with AIA are hypersensitive to some agents in addition to NSAID, e.g., tartrazine (15.1%), sodium benzoate (14.3%), and parabens (12.0%). 6) Patients with latent AIA are in danger of having fatal or near-fatal asthma attacks if they take NSAID. We should educate patients to eliminate the risk posed by NSAID and other agents that may induce asthma attacks, and should enlighten doctors and pharmacists, who are not specialists in allergy or respiratory disease, about AIA. 7) Asthma in these patients will be less severe if their condition is correctly diagnosed and they receive appropriate medical treatment.

Adult↗
PubMed1998

Diagnosis and management of asthma: a summary of the National Asthma Education and Prevention Program guidelines. National Institutes of Health.

Asthma is a common disease that affects persons of all ages. It is responsible for more than 5,000 deaths annually in the United States and countless days absent from school and work. For these reasons, the National Institutes of Health established the National Asthma Education Program whose expert panels have published two reports: Guidelines for the Diagnosis and Management of Asthma in 1991 and a revised report in 1997. A summary of the Expert Panel Report 2 published in 1997 is presented with emphasis on the outpatient diagnosis, prevention, and treatment of asthma. Education of the clinician and the patient is essential for effective management of asthma, and effective communication between clinician and patient is essential for implementing asthma education. The goal of this summary is to communicate and disperse the asthma education provided by the Guidelines for the Diagnosis and Management of Asthma: Expert Panel Report 2 in hopes of improving asthma care and decreasing morbidity and mortality-attributed asthma.

Anti-Asthmatic Agents↗
PubMed2001

Addition of anti-leukotriene agents to inhaled corticosteroids for chronic asthma.

BACKGROUND: Anti-leukotriene (AL) agents are being considered as "add-on" therapy to inhaled corticosteroids (ICS), in chronic asthma. OBJECTIVES: To examine the safety and efficacy of daily AL plus ICS compared to ICS alone, and determine the corticosteroid-sparing effect of AL when added to ICS in chronic asthma. SEARCH STRATEGY: We searched Medline, Embase, Cinahl (all up to 2001), reference lists of review articles and trials, contacted international headquarters of AL manufacturers and ATS meeting abstracts (1998-2000). SELECTION CRITERIA: Randomised placebo-controlled trials of asthmatics aged 2 years and older lasting at least one month. DATA COLLECTION AND ANALYSIS: Two reviewers assessed quality and extracted data independently. Trials were grouped by asthma control at baseline (symptomatic or well-controlled) and dose of ICS in the control group (same or double). MAIN RESULTS: Of 336 citations, 11 trials (only adults) met inclusion criteria. Six were published in full-text, eight were high quality. Daily dose of ICS was 300-2000 mcg beclomethasone-equivalent. In symptomatic adults, AL (at 2-4 times licensed dose) combined with ICS reduced the number of patients with exacerbations that required systemic corticosteroids, compared to ICS alone [Relative Risk (RR) = 0.34; 95% Confidence Interval (CI) 0.13, 0.88]. This equates to 20 patients (95% CI 1,100 patients) treated to prevent one needing systemic corticosteroids. There was no difference in side effects. No trials tested the efficacy of licensed doses of ALs as add-on to ICS. In symptomatic adults, addition of zafirlukast to ICS did not reduce the number of exacerbations requiring systemic corticosteroids, compared to doubled dose ICS [RR= 1.39; 95% CI: 0.63, 3.08)]. There were no differences in any other measure of outcome. Higher doses of zafirlukast than currently licensed were associated with increased risk of liver enzyme elevation. In ICS-sparing trials of AL agents there was no difference in ICS dose after 12-16 weeks [Weighted Mean Difference (WMD) 1.9% change; 95% CI -3.5, 7.3], and no difference in lowest tolerated dose of ICS [WMD= 44 mcg/d; 95% CI -59, 148)]. REVIEWER'S CONCLUSIONS: Used as add-on therapy to inhaled corticosteroids, high dose anti-leukotrienes reduced exacerbations, but there is no evidence to support their use at currently licensed doses. There is insufficient evidence to indicate whether they confer benefit over doubling the dose of corticosteroids. There is no evidence that they have any significant inhaled corticosteroid-sparing effect.

Administration, Inhalation↗