Detection of undiagnosed and poorly controlled asthma in a hospital-based outpatient pediatric primary care clinic using a health risk assessment system

Children with under-diagnosed asthma presenting to a pediatric emergency department

BACKGROUND

Undiagnosed asthma in children presenting to the emergency department (ED) for respiratory illnesses might be associated with subsequent asthma morbidity and repeat ED visits.

OBJECTIVE

To examine the prevalence of undiagnosed asthma among children presenting for ED care, and explore associations with sociodemographic and clinical characteristics.

METHODS

We surveyed parents of children ages 2-17 years seeking ED care for respiratory symptoms (including asthma) regarding sociodemographic characteristics, asthma symptoms, prior asthma care and morbidity, and prior asthma diagnosis. Undiagnosed asthma was defined as a positive screening for asthma and no prior diagnosis. We compared sociodemographic and clinical factors of those with diagnosed versus undiagnosed asthma using chi-square, t-tests and multivariable logistic regression model.

RESULTS

Of 362 children, 36% had undiagnosed asthma. Undiagnosed children were younger, had younger parents, and had parents less likely to speak English versus diagnosed children (all p < 0.05). Among undiagnosed children, 42% had moderate or severe asthma and 66% reported ≥1 exacerbation in the prior 12 months. Parent-reported controller medication use was higher among diagnosed versus undiagnosed children (60% vs. 21%, p=.001). In a multivariable logistic regression (adjusting for insurance, education, income and preferred language), no controller usage (aOR 4.26), no asthma exacerbations in the prior year (aOR 2.41) and younger age (aOR 0.76) were significantly associated with undiagnosed asthma.

CONCLUSION

Children presenting to the ED with undiagnosed asthma commonly experience significant prior asthma morbidity. Strategies to improve asthma diagnosis and messaging to their parents may reduce future morbidity.

Individual and Neighborhood Factors Associated with Undiagnosed Asthma in a Large Cohort of Urban Adolescents

Undiagnosed asthma adds to the burden of asthma and is an especially significant public health concern among urban adolescents. While much is known about individual-level demographic and neighborhood-level factors that characterize those with diagnosed asthma, limited data exist regarding these factors and undiagnosed asthma. This observational study evaluated associations between undiagnosed asthma and individual and neighborhood factors among a large cohort of urban adolescents. We analyzed data from 10,295 New York City adolescents who reported on asthma symptoms and diagnosis; a subset (n = 6220) provided addresses that we were able to geocode into US Census tracts. Multivariable regression models estimated associations between undiagnosed asthma status and individual-level variables. Hierarchical linear modeling estimated associations between undiagnosed asthma status and neighborhood-level variables. Undiagnosed asthma prevalence was 20.2%. Females had higher odds of being undiagnosed (adjusted odds ratio (AOR) = 1.25; 95% confidence interval (CI) = 1.13-1.37). Compared to White, non-Hispanic adolescents, Asian-Americans had higher risk of being undiagnosed (AOR = 1.41; 95% CI = 1.01-1.95); Latinos (AOR = 0.67; 95% CI = 0.45-0.83); and African-Americans/Blacks (AOR = 0.66; 95% CI = 0.52-0.87) had lower risk; Latinos and African-Americans/Blacks did not differ significantly. Living in a neighborhood with a lower concentration of Latinos relative to White non-Latinos was associated with lower risk of being undiagnosed (AOR = 0.66; CI = 0.43-0.95). Living in a neighborhood with health care provider shortages was associated with lower risk of being undiagnosed (AOR = 0.80; 95% CI =0.69-0.93). Public health campaigns to educate adolescents and their caregivers about undiagnosed asthma, as well as education for health care providers to screen adolescent patients for asthma, are warranted.

Psychological Factors Influencing the Decision of Urban Adolescents With Undiagnosed Asthma to Obtain Medical Care

PURPOSE

Adolescents are low users of medical care. Psychological factors and perceived reasons to not seek routine medical care may increase risk of nonuse by adolescents with undiagnosed asthma. This study tests if psychological factors were associated with seeing a medical provider for asthma-like symptoms; identifies adolescents' perceived reasons for not obtaining care; explores if psychological factors are associated with these perceptions; and explores if asthma severity moderates the relationships with psychological factors.

METHODS

We analyzed cross-sectional data from a baseline assessment of 349 urban, primarily ethnic minority adolescents with moderate to severe asthma-like symptoms but no asthma diagnosis who were enrolled in a controlled trial.

RESULTS

The odds of seeing a provider for their asthma-like symptoms were significantly higher for those with asthma-related anxiety (odds ratio [OR]: 1.644; 95% confidence interval [CI]: 1.242-2.176) and depressive symptoms (OR: 1.031; 95% CI: 1.004-1.059). The most commonly endorsed reason for noncare included a characterization of symptoms as not serious, past medical visits not diagnosed as asthma, fear of diagnosis, busy lifestyles, and not wanting medication. Psychological factors were not related to the number of reasons or to most of the commonly endorsed reasons. Adolescents with more asthma-related anxiety were less likely to characterize their breathing problems as serious (OR = .0583; 95% CI: .424-.802) and were more likely to report busy lifestyles (OR = 1.593; 95% CI: 1.122-2.261).

CONCLUSIONS

Adolescent-perceived reasons for noncare were not pragmatic, but instead highlighted denial. Asthma-related anxiety was the most robust psychological factor associated with the decision to seek medical care.

Asthma control in the United States, 2008-2010: indicators of poor asthma control

BACKGROUND

An estimated 23 million Americans have asthma, of whom at least 12 million experience an asthma exacerbation every year. Clinical practice guidelines focus on asthma control, with an emphasis on reducing both impairment and risk.

OBJECTIVE

We sought to explore broad patterns of asthma prevalence, self-reported medication use, and indicators of control in a nationally representative sample.

METHODS

The 2008, 2009, and 2010 Medical Expenditure Panel Surveys were used to examine the national prevalence of self-reported asthma, trends in medication use, and demographic characteristics of asthmatic patients. History of lifetime asthma and current diagnosis were ascertained based on self-report. Asthma management and control were examined by using patient-reported medication use.

RESULTS

Of the 102,544 subjects asked about an asthma diagnosis, 9,782 reported lifetime asthma, and 8,837 reported current asthma. Five thousand five subjects (4.8% of the population) reported experiencing an asthma exacerbation in the previous year. Four thousand five hundred twenty-one subjects used a quick-relief inhaler for asthma symptoms, and 14.6% used more than 3 canisters of this type of medication in the past 3 months. Of this group, 60% were using daily long-term control medication but still required significant use of quick-relief inhalers, whereas 28% had never used long-term control medication. Of those who had a recent exacerbation, 29% were using daily preventive medication, whereas 54% had never used long-term control medication.

CONCLUSIONS

Improvement of asthma control continues to be a US public health concern. Results suggest suboptimal asthma control with underuse of long-term control medications, overuse of quick-relief inhalers, and a significant number of self-reported asthma exacerbations.

Long-term maintenance of pediatric asthma: focus on budesonide/formoterol inhalation aerosol

Current national and international asthma guidelines recommend treatment of children with asthma towards achieving and maintaining asthma control. These guidelines provide more stringent recommendations to increase therapy for patients with uncontrolled asthma in order to reduce asthma-related morbidity and mortality. Newer combination agents such as budesonide and formoterol have been shown to be safe and effective in treatment of asthma in children. Use of long-term controller agents like this in combination with improved compliance and treatment of co-morbid conditions have been successful in this endeavor. This review discusses control of pediatric asthma with focus on the use of budesonide in combination with formoterol.