Feasibility of spirometry testing in preschool children.

RATIONALE: The primary purpose of this study was to evaluate the feasibility of obtaining acceptable and reproducible spirometry data in preschool aged children (3-5 years) by technicians without prior experience with spirometry. METHODS: Two technicians were trained to perform spirometry testing (ndd Easy on-PC) and to administer standardized questionnaires. Preschool aged children were enrolled from two Head Start centers and a local primary care clinic. Subjects were trained in proper spirometry technique and tested until at least two acceptable efforts were obtained or the subject no longer produced acceptable efforts. RESULTS: 200 subjects were enrolled: mean age 4.0 years (± 0.7 SD); age distribution: 51 (25.5%) 3 years old, 103 (51.5%) 4 years old, and 46 (23%) 5 years old. Fifty-six percent male and 75% Hispanic. One hundred thirty (65%) subjects produced at least one acceptable effort on their first visit: 23 (45%) for 3 years old, 67 (65%) for 4 years old, and 40 (87%) for 5 years old. The number of acceptable efforts correlated with age (r = 0.29, P < 0.001) but not gender. The mean number of acceptable efforts on the first visit was 2.66 (± 2.54 SD; range 0-10). One hundred twenty subjects (60%) had two acceptable efforts; 102 had FEV0.5 within 10% or 0.1 L and 104 had FVC within 10% or 0.1 L of best effort. The Asthma Health Screening Survey (AHSS) was 78% sensitive when compared to a specialist exam and 86% compared to a self-reported prior diagnosis of asthma. CONCLUSIONS: Technicians without prior experience were able to obtain acceptable and reproducible spirometry results from the preschool aged children; the number of acceptable efforts correlated significantly with age.

Asthma risk factor assessment: what are the needs of inner-city families?

BACKGROUND: A complex array of risk factors contributes to sustained high levels of asthma morbidity in inner-city children. OBJECTIVE: To describe risk factors for asthma morbidity in a national sample of inner-city children with persistent asthma. METHODS: This study examined baseline questionnaire results from 1,772 children ages 5 to 11 years old with moderate to severe persistent asthma who enrolled in the Centers for Disease Control and Prevention-funded Inner-City Asthma Intervention between April 2001 and March 2004. Risk for asthma morbidity was assessed in 9 domains using the Child Asthma Risk Assessment Tool. The domains included environmental exposures, parental stress, medication adherence, pessimistic asthma beliefs, smoke exposure, aeroallergen exposure, child psychological well-being, responsibility for medication administration, and medical care. RESULTS: A total of 51% of families demonstrated high risk of asthma morbidity in 3 or more domains. High risk of asthma morbidity was suggested based on household environmental exposures (47.7%), high parental stress (38.5%), poor medication adherence (38.3%), pessimistic asthma beliefs (31.8%), environmental tobacco smoke (24.4%), sensitization to aeroallergens in the home (24.8%), child behavioral or emotional concerns (22.9%), child assigned responsibility for medication administration (21.2%), and poor medical care (20.7%). Allergy testing was completed for 40% of the participating children. Of these children, 61% were exposed to aeroallergens in their home to which they were sensitized. CONCLUSIONS: In this national sample of inner-city children, multiple risk factors for asthma morbidity were identified. Asthma programs that provide multilevel support and intervention are needed to reduce the burden of asthma on inner-city families.