Development and cross-sectional validation of the Childhood Asthma Control Test

Omalizumab in combination with subcutaneous immunotherapy for the treatment of multiple allergies associated with attention-deficit/hyperactivity disorder: a case report and a literature review

We describe the case of a 10-year-old boy with asthma (AS), accompanied by allergic rhinitis (AR), food allergy (FA), and combined attention-deficit/hyperactivity disorder (ADHD), who was treated at Shanghai Renji Hospital on 11 July 2020. The efficiency of the previous treatment with salmeterol/ticlosone was poor. Treatment with montelukast sodium resulted in development of neurological symptoms. Treatment with omalizumab in combination with subcutaneous immunotherapy (SCIT) was then initiated in our department based on anti-asthmatic therapy. Symptoms of asthma were completely controlled, and FA and AR symptoms improved. The treatment regimen led to a significant improvement in ADHD symptoms and the overall quality of life of the patient. The literature search was done in the PubMed database using "attention deficit/hyperactivity disorder/ADHD" and "asthma" as keywords, and we identified 47 relevant articles. In conclusion, our results show that treating asthma with omalizumab in combination with salmeterol/ticlosone and SCIT is efficient in controlling symptoms of multiple allergies and may lead to the improvement in ADHD symptoms and the overall quality of life of pediatric patients with ADHD. While current studies suggest that allergic diseases are closely related to ADHD, there is still a lack of studies or case reports of complete treatment protocols to provide clinical clues for management of the disease.

Effect of dupilumab on asthma and aeroallergen sensitization in pediatric atopic dermatitis patients: Results of the BioDay registry

BACKGROUND

Atopic dermatitis (AD) is frequently associated with asthma and allergic rhinitis (AR). Dupilumab is an effective treatment for pediatric AD, although the effect on atopic comorbidities in pediatric AD patients is limited.

OBJECTIVE

To investigate the prevalence of asthma and AR in pediatric AD patients starting dupilumab treatment and to evaluate the effect of dupilumab on these comorbidities.

METHODS

This study included pediatric AD patients (aged 3-17 years) treated with dupilumab between 2019 and 2023. Patients were screened at baseline by a pulmonologist for the presence of asthma and AR. Screening included evaluation of medical history and current symptoms, spirometry (including Forced Expiratory Volume in 1 s (FEV1)), Fractional exhaled Nitric Oxide (FeNO), and measurement of aeroallergen-specific IgE levels. In patients diagnosed with comorbid asthma and/or AR, measurements were repeated at weeks 16 and 52. Spirometry measurements, FeNO, and aeroallergen-specific IgE levels during treatment were analyzed using a covariance pattern model.

RESULTS

Eighty-four patients were included. Asthma was diagnosed in 50 patients (59.5%) and AR in 72 patients (85.7%). Baseline FeNO levels were elevated in both patients with (29.0 ppb (95% CI 22.0-54.0)) and without asthma (26.0 ppb (95% CI 22.0-30.0)). During treatment, FeNO levels decreased (p < .001) and FEV1 scores increased (p < .001) in patients with asthma. In patients with asthma and/or AR, all aeroallergen-specific IgE levels decreased between 61.3% and 89.1% at 52 weeks of treatment.

CONCLUSION

One year of dupilumab treatment, primarily indicated for AD, resulted in a significant improvement in comorbid asthma and a profound decrease in aeroallergen-specific IgE levels in patients with asthma and/or AR.

Cohort profile: The Assessing Imperial Valley Respiratory Health and the Environment (AIRE) study

BACKGROUND

The Children's Assessing Imperial Valley Respiratory Health and the Environment (AIRE) study is a prospective cohort study of environmental influences on respiratory health in a rural, southeastern region of California (CA), which aims to longitudinally examine the contribution of a drying saline lake to adverse health impacts in children.

OBJECTIVES

This cohort was established through a community-academic partnership with the goal of assessing the health effects of childhood exposures to wind-blown particulate matter (PM) and inform public health action. We hypothesize that local PM sources are related to poorer children's respiratory health.

POPULATION

Elementary school children in Imperial Valley, CA.

DESIGN

Prospective cohort study.

METHODS

Between 2017 and 2019, we collected baseline information on 731 children, then follow-up assessments yearly or twice-yearly since 2019. Data have been collected on children's respiratory health, demographics, household characteristics, physical activity and lifestyle, via questionnaires completed by parents or primary caregivers. In-person measurements, conducted since 2019, repeatedly assessed lung function, height, weight and blood pressure. Exposure to air pollutants has been assessed by multiple methods and individually assigned to participants using residential and school addresses. Health data will be linked to ambient and local sources of PM, during and preceding the study period to understand how spatiotemporal trends in these environmental exposures may relate to respiratory health.

PRELIMINARY RESULTS

Analyses of respiratory symptoms indicate a high prevalence of allergies, bronchitic symptoms and wheezing. Asthma diagnosis was reported in 24% of children at enrolment, which exceeds both CA state and US national prevalence estimates for children.

CONCLUSIONS

The Children's AIRE cohort, while focused on the health impacts of the drying Salton Sea and air quality in Imperial Valley, is poised to elucidate the growing threat of drying saline lakes and wind-blown dust sources to respiratory health worldwide, as sources of wind-blown dust emerge in our changing climate.

An Update on Patient-Reported Outcomes in Asthma

TOPIC IMPORTANCE

Patient-reported outcomes (PROs) are information provided by patients on their condition, function, well-being, or experience. Instruments to quantify PROs, called patient-reported outcome measures (PROMs), allow standardized assessment of a unique dimension of health that cannot be measured physically. Herein, we discuss how to appraise PROMs critically and provide an update on their use in asthma clinical practice and research.

REVIEW FINDINGS

Asthma-specific PROMs have been developed to measure a wide array of disease characteristics, including symptoms, medication use, exacerbations, and impairments to emotional and physical function. Some PROMs also include spirometry or expand questions to overlap with rhinitis symptoms. Use of PROMs to understand asthma control is included in management guidelines, yet real-world evidence of their effectiveness in improving asthma care remains limited. These instruments may be less accurate in characterizing patients with poorly controlled asthma and have modest correlation with exacerbation risk. Two new PROMs are highlighted, the Asthma Impairment and Risk Questionnaire as an instrument to assess asthma control that incorporates domains related to exacerbation risk and impairment, and the CompEx as a composite of daily diary reporting combined with exacerbation events as an early efficacy signal for interventional trials.

SUMMARY

PROMs are fundamental to asthma assessment. Novel instruments may improve the detection of patients at risk for poor outcomes and shorten the drug discovery pipeline. However, urgent research is needed to understand their practical utility in clinical settings.

Feasibility of residential air quality monitoring to address asthma outcomes

Improving asthma outcomes for underserved populations can be addressed through interventions to improve indoor air quality (IAQ). New protocol for measuring IAQ and health outcomes are imperative given advances in IAQ monitoring technology and challenges in conducting intervention research in homes. In this pilot study HEPA air purifiers and HEPA vacuum cleaners were provided to five homes with children with asthma. For 6 weeks, eight common components of air quality were measured using a low-cost multi-channel air quality monitoring device, with data conveyed directly from participant homes via Wi-Fi connection. In conjunction with periodic surveys on asthma control, impact of asthma on quality of life and intervention compliance, outcomes compared IAQ, home characteristics, and asthma-related measures. This pilot study demonstrates the feasibility of a protocol to evaluate a dual component intervention to improve IAQ in homes, as measured with a low-cost air quality monitoring device.

Digital inhalers for asthma management

PURPOSE OF REVIEW

Although digital inhaler systems for asthma management have been commercially available for over a decade, their current use in clinical practice is limited. This review outlines barriers and offers potential solutions to their implementation.

RECENT FINDINGS

Digital inhaler systems demonstrate increased controller medication adherence, decreased quick-relief medication use, and improved asthma control.

SUMMARY

Use of digital inhaler systems is supported by data from large clinical trials demonstrating improved asthma outcomes. Navigating telemedicine during the coronavirus disease 2019 pandemic has led to advances clearing the path for increased adoption of digital inhaler systems. Progress in areas including patient education and onboarding, clinical management, coding and billing, privacy and security have facilitated implementation in clinical practice.

Risk factors associated with uncontrolled asthma in children - a systematic review and meta-analysis

OBJECTIVE

We aim to assess the risk factors of uncontrolled asthma in children and adolescents.

METHODS

A systemic search was conducted from electronic databases (PubMed/Medline, Cochrane Library, and Google Scholar) from inception to July 17, 2023. All statistical analyses were conducted in Review Manager 5.4.1. Studies meeting inclusion criteria were selected. A random-effects model was used when heterogeneity was seen to pool the studies, and the result was reported in the odds ratio and the corresponding 95% confidence interval. We also used a narrative approach where it was not feasible to quantitatively assess the outcome.

RESULTS

Ten observational studies were used to conduct this systematic review and meta-analysis. A quantitative analysis of five factors was done. Pooled analysis showed a statistically significant risk of uncontrolled asthma in association with past hypersensitivity reactions (standardized mean difference [SMD] = 1.51 (1.16, 1.98); p = .002; I2 = 84%) and incomplete controller adherence (SMD = 3.15 (1.83, 5.41); p < .0001; I2 = 94%). While non-significant relation was seen in parental asthma (SMD = 1.23 (0.98, 1.55); p = .07; I2 = 15%), oral corticosteroid use (SMD = 0.99 (0.72, 1.36); p = .96; I2 = 81%) and education of caregivers (SMD = 0.99 (0.72, 1.36); p = .96; I2 = 81%). Some other factors were also discussed qualitatively.

CONCLUSION

Our study shows that some significant risk factors might cause uncontrolled asthma in children and adolescents like past hypersensitivity reactions and incomplete controller adherence.

Using Cost Conversations to Address Financial Toxicity in Pediatric Asthma Care: Findings From a Survey of Caregivers

INTRODUCTION

Asthma care teams are well-positioned to help caregivers address financial toxicity in pediatric asthma care, although discussing cost can be challenging. We sought to characterize cost conversations in pediatric asthma specialty care.

METHOD

We surveyed 45 caregivers of children aged 4-17 with asthma. Eligible caregivers reported costs concerns and had accompanied their child to a multisite asthma specialty practice in North Carolina.

RESULTS

About one-third of caregivers reported a cost conversation (36%). Cost conversations were less common among caregivers whose child had public versus private health insurance (16% vs. 56%), who attended a telehealth versus in-person visit (6% vs. 52%), or who did not versus did want a conversation (19% vs. 77%, all p < .05). Common cost conversation topics were medications and equipment like spacers.

DISCUSSION

Our findings suggest cost conversations may be relatively uncommon in pediatric asthma care, particularly for publicly insured patients and telehealth visits.

Elevated Saliva Pepsin Concentration as a Risk Factor for Asthma in Children with Allergic Rhinitis: A Preliminary Study

Objective

This study aimed to explore whether saliva pepsin concentration (SPC) could be regarded as a risk factor for the occurrence and unfavorable control of asthma in children with allergic rhinitis.

Methods

A prospective study was conducted on a group of 20 consecutive children newly diagnosed with allergic rhinitis and asthma (referred to as the asthma group). All these children underwent fractional exhaled nitric oxide (FeNO) measurement, lung function tests, and assessment of asthma control using the 7-item Childhood Asthma Control Test (C-ACT) score. Simultaneously, a control group consisting of 20 children with simple allergic rhinitis, matched for baseline characteristics, was included. SPC measurement was performed in the two groups.

Results

The SPC value was significantly higher in the asthma group than that in the control group (165.0 ± 82.8 ng/mL vs 68.4 ± 34.5 ng/mL) (P < 0.001). In the asthma group, SPC was independently associated with FeNO, the ratio of forced expiratory volume in 1 second (FEV1) to forced vital capacity (FVC), and forced expiratory flow at 50% and 75% of FVC (FEF50 and FEF75) (all P < 0.05). The severity of nasal symptoms evaluated by the visual analogue scale (N-VAS) was independently associated with FEF75, the maximal mid-expiratory flow (MMEF), and C-ACT score (P < 0.05).

Conclusion

Direct pepsin exposure and uncontrolled nasal symptoms may play crucial roles in the pathogenesis and progression of childhood allergic asthma. The SPC value can be considered as a risk factor for asthma in children with allergic rhinitis.

Development and validation of a new asthma questionnaire to help achieve a high level of control in school-age children and adolescents

BACKGROUND

Maintaining good asthma control minimizes the risk of exacerbations and lung function decline and is a primary goal of asthma management. The Japanese Pediatric Asthma Guidelines (JPGL) employs different classification criteria for control status from other guidelines, stressing a higher level of control. Based on JPGL, we previously developed a caregiver-completed questionnaire for assessing and achieving best asthma control in preschoolers. In this study, we aimed to develop a questionnaire for school-age children and adolescents.

METHODS

A working questionnaire comprising 14 items for patients and 34 items for caregivers was administered to 362 asthma patients aged 6-15 years and their caregivers. Separately, physicians filled out a questionnaire to determine JPGL-defined control. Logistic regression analysis was performed to construct a model to predict control levels using data from a randomly selected set of completed questionnaires from two-thirds of the subjects. Validation was performed using the remaining questionnaires.

RESULTS

A set of 7 questions, encompassing self-assessed control status at the time of the visit and in the past month, and nocturnal/early morning asthma symptoms for patients and frequency of asthma symptoms, dyspnea, rescue beta-agonist use, and asthma hospitalization for caregivers, were selected and the 7-item model showed a good statistical fit with AIC of 110.5. The model has been named the Best Asthma Control Test for School Children and Adolescents (Best ACT-S). Best ACT-S scores differed significantly in the hypothetical direction among the groups of different JPGL-defined control levels, step-up/down treatment decisions, and presence/non-presence of exacerbations in the previous year.

CONCLUSIONS

The Best ACT-S is a valid questionnaire for children/adolescents aiming for best asthma control.

Alveolar nitric oxide concentration plays an important role in identifying cough variant asthma and assessing asthma control in children

OBJECTIVE

To study the value of alveolar nitric oxide concentration (CaNO) in the identification and disease control of cough variant asthma.

METHODS

A retrospective study was conducted on cough variant asthma (CVA-Group), nonasthmatic cough (NAC-Group) and healthy control children (C-Group) aged 5-12 years. The exhaled nitric oxide and spirometry test results of the three groups were collected and compared.

RESULTS

A total of 410 children were included in this study, including 190 in the CVA-Group, 183 in the NAC-Group, and 37 in the C-Group. The CaNO values of the CVA-Group [11.40 ppb (8.48-14.25)] were significantly higher than those of the NAC-Group and C-Group (all p values <.05). The MMEF %pred values of the CVA-Group [63.65 (56.28-73.58)] were significantly lower than those of the NAC-Group and C-Group (all p values <.05). FeNO50, JawNO and other spirometry indices (FVC %pred, FEV1%pred, FEV1/FVC %pred) showed no significant difference among the three groups. ROC curve analysis showed that the optimal cutoff point value of CaNO was 9.45 ppb, corresponding to 0.816 sensitivity and 0.736 specificity. Spearman correlation analysis showed a significant negative correlation between the CaNO measurement and CVA control score.

CONCLUSIONS

CaNO can not only help identify CVA early in children aged 5-12 years with chronic cough but is also significantly negatively correlated with the CVA control score.

Recommendations for asthma monitoring in children: A PeARL document endorsed by APAPARI, EAACI, INTERASMA, REG, and WAO

Monitoring is a major component of asthma management in children. Regular monitoring allows for diagnosis confirmation, treatment optimization, and natural history review. Numerous factors that may affect disease activity and patient well-being need to be monitored: response and adherence to treatment, disease control, disease progression, comorbidities, quality of life, medication side-effects, allergen and irritant exposures, diet and more. However, the prioritization of such factors and the selection of relevant assessment tools is an unmet need. Furthermore, rapidly developing technologies promise new opportunities for closer, or even "real-time," monitoring between visits. Following an approach that included needs assessment, evidence appraisal, and Delphi consensus, the PeARL Think Tank, in collaboration with major international professional and patient organizations, has developed a set of 24 recommendations on pediatric asthma monitoring, to support healthcare professionals in decision-making and care pathway design.

Altered Symptom Perception in Children With Asthma Is Associated With Poor Childhood Opportunity and Adverse Outcomes

BACKGROUND

Effective asthma self-management requires that children recognize their asthma symptoms when they occur. However, some children have altered symptom perception, which impairs their ability to respond to their asthma symptoms in a timely manner.

OBJECTIVE

To characterize the prevalence and features of altered symptom perception in children aged 5 to 18 years. We hypothesized that children with altered symptom perception would have more features of uncontrolled asthma, more health inequity, and poorer longitudinal asthma outcomes over 12 months.

METHODS

Children (N = 371) completed an outpatient research visit for clinical characterization. Altered symptom perception was defined by discordance between child responses on the 6-item Asthma Control Questionnaire and medical provider-elicited symptoms. Electronic medical records were reviewed for 12 months for the occurrence of an asthma exacerbation treated with systemic corticosteroids and an asthma exacerbation prompting an emergency department visit.

RESULTS

Approximately 15% of children had altered symptom perception and their asthma features were similar to those of children with uncontrolled asthma. Children with altered symptom perception were uniquely distinguished by non-White race and more severe prior exacerbations. These children also resided in ZIP codes with the poorest childhood opportunity (ie, poorest education, health and environmental features, and socioeconomic features). Outcomes of children with altered symptom perception were equally disparate with approximately 2-fold higher odds of a future exacerbation and approximately 3-fold higher odds of an emergency department visit for asthma.

CONCLUSIONS

Altered symptom perception is present in a small but significant number of children with asthma and is related to poorer childhood opportunity and other health inequities that require additional intervention.

Childhood Asthma Control Test and spirometry values in school-age children

OBJECTIVE

To determine the relationship between child and parent reports of asthma control using the Childhood Asthma Control Test (C-ACT) and spirometry.

METHODS

This descriptive study included 648 children ages 5-11 years from a school-based asthma program. Not well-controlled asthma was defined as forced expiratory volume in 1 s (FEV1) and by FEV1/forced vital capacity (FVC) of 80% predicted or lower. Sensitivity and specificity of C-ACT scores for low FEV1 and FEV1/FVC levels were calculated. Logistic regression was used to obtain the area under the receiver operating characteristic curve (AUC) for C-ACT score categories by FEV1 level.

RESULTS

Mean child age was 8.2 years, mean C-ACT score was 20.3 (SD = 3.96), mean FEV1 was 94.3% (SD = 17.1), and mean FEV1/FVC was 81.3 (SD = 8.5). Children with an FEV1 of 80% or less had significantly lower C-ACT scores than those with an FEV1 > 80% (p = .023, t = -2.015, df = 167); 95% CI [. -1.79 to -0.018]). The sensitivity and specificity of a C-ACT score of 19 or less for an FEV1 of 80% predicted or lower were 44.9 and 66.4%. With a C-ACT score of 22 or less, sensitivity and specificity for low FEV1 were 67.7 and 30.9%. The AUC for a C-ACT score of 19 or less and FEV1 of 80% or lower was .444 while the AUC was higher at .507 for a CACT score of 22 or less.

CONCLUSION

The C-ACT is a useful screen but spirometry should be performed in children with persistent symptoms to assess current asthma control.

Correlation between impulse oscillometry parameters and test for respiratory and asthma control in kids (TRACK) in asthma control of preschoolers with asthma

BACKGROUND

Little research has been conducted to evaluate the correlation between impulse oscillometry (IOS), Childhood Asthma Control Test (C-ACT), and Test for Respiratory and Asthma Control in Kids (TRACK).

METHODS

This study was conducted at China Medical University Hospital between September 1, 2019, and March 31, 2021. Children aged 2-6 years who had been diagnosed with asthma with acute exacerbation were enrolled and followed-up until the end of the study. Correlations between the parameters of IOS, C-ACT and TRACK were assessed. The validity and reliability of TRACK were verified.

RESULTS

A total of 114 children with asthma and acute exacerbations were recruited. Their mean age was 4.1 ± 1.1 years, and 60.5% were males. After a year of treatment, the change of R5-R20 from baseline 0.64 ± 0.38 kPa/L/s to 12th month 0.48 ± 0.2 kPa/L/s (p = 0.022). TRACK and C-ACT scores were significantly correlated during the observation period. R5-R20 in IOS at baseline and at the 12th month of follow-up as well as the change in IOS parameters were significantly associated with C-ACT (p = 0.003, 0.015, and 0.001, respectively). R5% and R5-R20 changes in IOS were associated with TRACK (p = 0.04 and 0.025, respectively). Sensitivity and specificity of TRACK were 80.8% (67.5-90.4) and 100% (94.1-100), respectively, with cut-off points >95 and AUC 93.8%.

CONCLUSION

TRACK score appears to have a stronger association with the IOS parameter than C-ACT score. Our findings indicate that TRACK is a valid tool for assessing asthma control in preschool children.

Investigation of the presence of atopy in children visiting the paediatric cardiology department due to chest pain

BACKGROUND

The cases of chest pain in children are usually not of cardiac origin.

OBJECTIVES

To investigate asthma and other atopic diseases in children with chest pain not of cardiac origin.

PATIENTS AND METHODS

Children aged 6-18 years who were seen for chest pain were included in the study. Haematologic parameters, pulmonary function tests, and skin prick tests were performed. Atopic diseases and environmental factors were investigated.

RESULTS

The non-cardiac chest pain group (Group 1) included 88 children (female: 53.4%) with a mean age of 11.9 ± 3.4 years; the control group (Group 2) included 29 children (female: 53.8%) with a mean age of 11.4±2 years (p > 0.05). A family history of atopy (22.7%) and skin prick test positivity (28.4%) was more common in Group 1 than Group 2 (p = 0.006 and p = 0.017, respectively). The rate of presence of all environmental factors except stove use and mould was significantly higher in Group 1 (54.5%) than Group 2 (3.4%) (p < 0.001). Asthma was diagnosed in 44.3% and allergic rhinitis in 9.1% of patients in Group 1. Idiopathic chest pain, musculoskeletal system disorders, gastroesophageal reflux, and pneumonia were identified in 23.9%, 11.4%, 8%, and 3.4% of patients in Group 1, respectively.

CONCLUSIONS

In this study, the most common cause of non-cardiac chest pain was asthma. The local prevalence of asthma is higher than normal, and this may have affected the results of this study. A detailed history and physical examination will accurately establish the cause of chest pain in most children.

Online-merge-offline (OMO)-based music therapy for asthmatic children during the COVID-19 pandemic in China

The purpose of this study is to evaluate online-merge-offline (OMO)-based music therapy (MT) as a complementary option for asthma management in pediatric patients. A total of 86 children diagnosed with mild asthma were enrolled and treated with the same drug therapy. They were assigned into three groups: Music I group (standard medical care plus a single individualized MT session along with singing training and breathing exercise), Music II group (similar as Music I as well as further wind instrument playing), and Control group (standard medical care). Primary endpoints included pulmonary function tests FEV1, FVC, FEV1/FVC, MMEF 75/25, and PEF, c-ACT, PAQLQ, and PACQLQ. After 6 months of continuous intervention of MT, significant differences in FEV1, FVC, MMEF75/25, PEF, c-ACT score, PAQLQ, PACQLQ (p < 0.001), and FEV1/FVC (p < 0.05) were observed among Music I, Music II, and Control groups. Besides, FEV1, FVC, FEV1/FVC, MMEF75/25, and PEF showed positive trends in Music I and Music II groups compared to those in Control group (p < 0.05). The c-ACT score of children was significantly increased in Music I (p < 0.001) and II (p < 0.001) groups in contrast with Control group. Children in Music I and II groups had better quality of life than those in Control group (PAQLQ, p < 0.001), and the parents in Music I and II groups also showed better quality of life than those in Control group (PACQLQ, p < 0.001).     Conclusion: As a child-friendly, low-risk, and convenient intervention, the OMO-based MT has a positive impact on pediatric asthma management during the COVID-19 pandemic. What is Known: • A few findings proved the positive effect of MT on pediatric asthma. What is New: • Our study further proving the validation and effectiveness of MT with OMO-based model on pediatric asthma, wind instrument playing has a greater impact on pediatric asthma control via small airways and might be recommended to mix to singing and breathing to improve effectiveness of MT for asthmatic children.

Correlation of vitamin D receptor genotypes, specific IgE levels and other variables with asthma control in children

INTRODUCTION

Asthma is a common condition affecting millions of children globally. The main goal of this study is to assess factors related to asthma management, particularly atopy level and the impact of genetic variants of the vitamin D receptor (VDR) gene.

METHODS

Asthmatic children were enrolled in an outpatient respiratory clinic. Information on patients' medication adherence, medical and medication factors, and sociodemographic were gathered. Spirometry FEV1% and FVC% measurements, and the asthma control test were used to evaluate the severity of asthma, and genotyping of the VDR gene and radioallergosorbent test (RAST) were conducted. Regression analyses were conducted to evaluate variables associated with asthma control and spirometry measures.

RESULTS

A total of 313 participants (67.4% males) were recruited in the current study. The mean age was 9.37 (±3.45) years. The mean score for adherence was 4.26 (±2.52), and only 46% of the participants had controlled asthma. Forward conditional stepwise binary regression showed that low and moderate Inhaled corticosteroids (ICS) dose (OR= 0.42 (95% CI 0.20-0.90), p = 0.026; OR = 0.371 (95% CI 0.2-0.72), p = 0.003, respectively) decreased the odds of being in the controlled asthma group, while higher inhaler score (OR = 2.75 (95% CI 2.17-3.49, p < 0.001)) increased the odds of being in the controlled asthma group. However, results found no association between VDR genotype and asthma control, spirometry values or hospitalization due to asthma.

CONCLUSIONS

The results indicated that many of the asthma patients had poorly controlled asthma. Factors that were associated with poor asthma control included poor inhaler technique.

Effect of adjuvant yoga therapy for asthma control: A randomized controlled trial

BACKGROUND

Asthma is a chronic respiratory disease with symptoms of attacks of wheezing, shortness of breath, & tightness in the chest. Even with pre-existing treatment exacerbations go uncontrolled.

OBJECTIVE

This study compared asthma control in yoga intervention versus non-yoga intervention group using Asthma Control Test.

METHODS

In this randomized controlled trial, participants were allocated into two groups in 1:1 ratio - yoga intervention versus non-yoga intervention. Only outcome assessor was blinded. Sample size of 200 was calculated. Individuals between 18 and 60 years of age, diagnosed with mild to moderate asthma with no exacerbation in past one month were screened and enrolled. Per-protocol analysis was done to assess the outcomes of Asthma Control Test and expenditure.(CTRI/2020/02/023534) RESULTS: A total of 192 participants enrolled, 165 completed this study who were considered for final analysis. A significant difference (p < 0.001) was found between yoga and non-yoga exercise group at 13 weeks. Expenses were more in non-yoga exercise group.

CONCLUSION

Our findings confirm that yoga exercise with routine medical care reduces exacerbations and improves asthma control.

The Saudi initiative for asthma - 2024 update: Guidelines for the diagnosis and management of asthma in adults and children

The Saudi Initiative for Asthma 2024 (SINA-2024) is the sixth version of asthma guidelines for the diagnosis and management of asthma for adults and children that was developed by the SINA group, a subsidiary of the Saudi Thoracic Society. The main objective of the SINA is to have guidelines that are up-to-date, simple to understand, and easy to use by healthcare workers dealing with asthma patients. To facilitate achieving the goals of asthma management, the SINA Panel approach is mainly based on the assessment of symptom control and risk for both adults and children. The approach to asthma management is aligned for age groups: adults, adolescents, children aged 5-12 years, and children aged <5 years. SINA guidelines have focused more on personalized approaches reflecting a better understanding of disease heterogeneity with the integration of recommendations related to biologic agents, evidence-based updates on treatment, and the role of immunotherapy in management. The medication appendix has also been updated with the addition of recent evidence, new indications for existing medication, and new medications. The guidelines are constructed based on the available evidence, local literature, and the current situation at national and regional levels. There is also an emphasis on patient-doctor partnership in the management that also includes a self-management plan.

Small airways response to bronchodilators as the marker of the uncontrolled asthma in children

OBJECTIVE

Aim: To develop the criteria of small airways response to bronchodilators (by spirometry indices maximal expiratory flow (MEF50 and MEF25) as the markers of uncontrolled asthma course.

PATIENTS AND METHODS

Materials and Methods: The study involved 92 participants (64 boys and 28 girls) aged 6 to 17 years (60 were less than 12 years old) with diagnosed asthma. Asthma control was assessed with the use of Asthma Control Test and Asthma Control Questionnaire. Spirometry and bronchodilator responsiveness testing were performed for all participants.

RESULTS

Results: Mostly, the studied children had a normal level of forced expiratory volume in the first second (FEV1), even at unsatisfactory symptoms control. The indicators of the medium and small airways patency were significantly worse in uncontrolled asthma children even in normal FEV1. Among children, the lack of asthma control can be caused by small airways obstruction in up to 80% cases. Among children who need the high dose inhaled corticosteroids treatment 93.3% have uncontrolled asthma with small airways obstruction. We found out that MEF50 and MEF25 could be the signs of the reversibility of bronchial obstruction and uncontrolled asthma with high sensitivity and specificity.

CONCLUSION

Conclusions: Indices MEF50 and MEF25 allow detecting the small airways obstruction and their reversibility as a mark of uncontrolled asthma (MEF25 has a higher diagnostic value). In case of MEF50 and/or MEF25 increasing for 22% or 25% accordingly in bronchodilator test in children, the asthma should be considered uncontrolled.

Predicting emergency department visits among children with asthma in two academic medical systems

Objective: To develop and validate a predictive algorithm that identifies pediatric patients at risk of asthma-related emergencies, and to test whether algorithm performance can be improved in an external site via local retraining.Methods: In a retrospective cohort at the first site, data from 26 008 patients with asthma aged 2-18 years (2012-2017) were used to develop a lasso-regularized logistic regression model predicting emergency department visits for asthma within one year of a primary care encounter, known as the Asthma Emergency Risk (AER) score. Internal validation was conducted on 8634 patient encounters from 2018. External validation of the AER score was conducted using 1313 pediatric patient encounters from a second site during 2018. The AER score components were then reweighted using logistic regression using data from the second site to improve local model performance. Prediction intervals (PI) were constructed via 10 000 bootstrapped samples.Results: At the first site, the AER score had a cross-validated area under the receiver operating characteristic curve (AUROC) of 0.768 (95% PI: 0.745-0.790) during model training and an AUROC of 0.769 in the 2018 internal validation dataset (p = 0.959). When applied without modification to the second site, the AER score had an AUROC of 0.684 (95% PI: 0.624-0.742). After local refitting, the cross-validated AUROC improved to 0.737 (95% PI: 0.676-0.794; p = 0.037 as compared to initial AUROC).Conclusions: The AER score demonstrated strong internal validity, but external validity was dependent on reweighting model components to reflect local data characteristics at the external site.

A Primary Care-Based Quality Improvement Project to Reduce Asthma Emergency Department Visits

BACKGROUND AND OBJECTIVES

Asthma exacerbation is a common and often preventable cause of Emergency Department (ED) utilization. Children eligible for Medicaid are at increased risk of poor asthma control and subsequent ED visits. In 2010, we implemented a multicomponent longitudinal quality improvement project to improve pediatric asthma care for our primary care population, which was 90% Medicaid-eligible. Our goal was to reduce asthma-related ED visits by patients ages 2 to 18 years by 3% annually.

METHODS

The setting was a multisite large urban high-risk primary care network affiliated with a children's hospital. We implemented 5 sequential interventions within our network of pediatric primary care centers to increase: use of asthma action plans by clinicians, primary care-based Asthma Specialty Clinic visits (extended asthma visits in the main primary care site), use of a standard asthma note at all visits, documentation of the Asthma Control Test, and step-up therapy for children with poorly controlled asthma.

RESULTS

At baseline in 2010, there were 21.7 asthma-related ED visits per 1000 patients per year. By 2019, asthma-related ED visits decreased to 14.5 per 1000 patients per year, a 33% decrease, with 2 center line shifts over time. We achieved and sustained our goal metrics for 4 of 5 key interventions.

CONCLUSIONS

We reduced ED utilization for asthma in a large, high-risk pediatric population. The interventions implemented and used over time in this project demonstrate that sustainable outcomes can be achieved in a large network of primary care clinics.

Associations between personal apparent temperature exposures and asthma symptoms in children with asthma

Ambient temperature and relative humidity can affect asthma symptoms. Apparent temperature is a measure of temperature perceived by humans that takes into account the effect of humidity. However, the potential link between personal exposures to apparent temperature and asthma symptoms has not been investigated. We conducted a panel study of 37 asthmatic children, aged 5-11 years, during an early spring season (average daily ambient temperature: 14°C, range: 7-18°C). Asthma symptoms were measured 4 times for each participant with a 2-week interval between consecutive measurements using the Childhood Asthma-Control Test (C-ACT). Average, minimum, and maximum personal apparent temperature exposures, apparent temperature exposure variability (TV), and average ambient temperature were calculated for the 12 hours, 24 hours, week, and 2 weeks prior to each visit. We found that a 10°C lower in 1-week and 2-week average & minimum personal apparent temperature exposures, TV, and average ambient temperature exposures were significantly associated with lower total C-ACT scores by up to 2.2, 1.4, 3.3, and 1.4 points, respectively, indicating worsened asthma symptoms. Our results support that personal apparent temperature exposure is potentially a stronger driver than ambient temperature exposures for the variability in asthma symptom scores. Maintaining a proper personal apparent temperature exposure could be an effective strategy for personalized asthma management.

Parenting style and child asthma control in families of school-age children with asthma: The mediating effects of children's general self-efficacy and medication adherence

PURPOSE

Parenting style plays a pivotal role in children's chronic disease control. However, the relationship and underlying mechanism between parenting style and asthma control remain unclear. This study investigated the effects of parenting style on children's general self-efficacy, medication adherence and asthma control and the mediating effects of general self-efficacy and medication adherence among school-age children with asthma.

DESIGN AND METHODS

A cross-sectional study with a convenience sampling approach was conducted. This study followed the STROBE guidelines. School-age children with asthma and their parents (N = 211) from pediatric respiratory clinics in China completed the General Questionnaire, Short-Egna Minnen av. Barndoms Uppfostran-Chinese, General Self-Efficacy Scale, Medication Adherence Questionnaire and Childhood Asthma Control Test. Structural equation modeling was used to examine the mediation models.

RESULTS

Positive parenting style was positively correlated with child general self-efficacy, medication adherence and asthma control (r = 0.602, 0.572, 0.613, p < 0.001). Negative parenting style was negatively correlated with child general self-efficacy, medication adherence and asthma control (r = -0.535, -0.598, -0.586, p < 0.001). Structure Equation Modle (SEM) results indicated that the relationships between positive parenting style, negative parenting style and child asthma control were mediated by general self-efficacy (Effect Size [ES]: 0.209, 95%CI [0.075, 0.372]; and ES: -0.229, 95%CI [-0.387, -0.103], respectively) and medication adherence (ES: 0.128, 95%CI [0.032, 0.322]; and ES: -0.190, 95%CI [-0.432, -0.071], respectively) and together in serial (ES: 0.177, 95%CI [0.076, 0.295]; and ES: -0.118, 95%CI [-0.235, -0.020], respectively).

CONCLUSIONS

Parenting style may impact child asthma through both child general self-efficacy and medication adherence. The study may provide useful intervention targets for improving asthma control.

PRACTICE IMPLICATIONS

Nurses should encourage parents to increase positive parenting style while decreasing negative parenting style. Family interventions focusing on general self-efficacy and medication adherence may be advantageous to improve asthma control.

Odds of COVID-19-associated asthma exacerbations in children higher during Omicron wave

BACKGROUND

We aimed to determine the association of COVID-19 variant wave with asthma exacerbations in children with asthma.

METHODS

We conducted a retrospective cross-sectional study of children in the Western Pennsylvania COVID-19 Registry (WPACR). We extracted data for all children in the WPACR with asthma and compared their acute clinical presentation and outcomes during the Pre-Delta (7/1/20-6/30/21), Delta (8/1/21-12/14/21), and Omicron (12/15/21-8/30/22) waves. We conducted multivariable logistic regression analyses of SARS-CoV-2-associated asthma exacerbations, adjusting for characteristics that have been associated with COVID-19 outcomes in prior studies.

RESULTS

Among 573 children with asthma in the WPACR during the study period, the proportion of children with COVID-19 who had an asthma exacerbation was higher during the Omicron wave than during the prior two variant waves (40.2% vs. 22.6% vs. 26.2%, p = 0.002; unadjusted OR = 2.12 [95% confidence interval (CI) = 1.39-3.22], p < 0.001). In our multivariable regression models, the odds of an asthma exacerbation were 2.8 times higher during the Omicron wave than during prior waves (adjusted OR = 2.80 [95% CI = 1.70-4.61]). Results were similar after additionally adjusting for asthma severity but were no longer significant after additionally adjusting for poor asthma control.

CONCLUSION

The proportion of children with asthma experiencing an asthma exacerbation during SARS-CoV-2 infection was higher during Omicron than prior variant waves, adding to the body of evidence that COVID-19-associated respiratory symptoms vary by variant. These findings provide additional support for vaccination and prevention.

The Impact of SARS-CoV-2 Infection on Symptom Control and Lung Function in Children with Asthma

Rationale: Little is known about the long-term impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on children with asthma. Objectives: To determine whether SARS-CoV-2 infection affects symptom control and lung function in children with asthma. Methods: Using data from clinical registries and the electronic health record, we conducted a prospective case-control study of children with asthma aged 6-21 years who had (cases) or did not have (control subjects) SARS-CoV-2 infection, comparing baseline and follow-up asthma symptom control and spirometry within an ∼18-month time frame and, for cases, within 18 months of acute coronavirus disease (COVID-19). Results: A total of 171 cases had baseline and follow-up asthma symptom data, and 114 cases had baseline and follow-up spirometry measurements. There were no significant differences in asthma symptom control (P = 0.50), forced expiratory volume in 1 second (P = 0.47), forced vital capacity (P = 0.43), forced expiratory volume in 1 second/forced vital capacity (P = 0.43), or forced expiratory flow, midexpiratory phase (P = 0.62), after SARS-CoV-2 infection. Compared with control subjects (113 with symptom data and 237 with spirometry data), there were no significant differences in follow-up asthma symptom control or lung function. A similar proportion of cases and control subjects had poorer asthma symptom control (17.5% vs. 9.7%; P = 0.07) or worse lung function (29.0% vs. 32.5%; P = 0.50) at follow-up. Patients whose asthma control worsened after COVID-19 had a shorter time to follow-up (3.5 [1.5-7.5] vs. 6.1 [3.1-9.8] mo; P = 0.007) and were more likely to have presented with an asthma exacerbation during COVID-19 (46% vs. 26%; P = 0.04) than those without worse control. Conclusions: We found no significant differences in asthma symptom control or lung function in youth with asthma up to 18 months after acute COVID-19, suggesting that COVID-19 does not affect long-term asthma severity or control in the pediatric population.

The Relationship Between Pediatric Attention-Deficit/Hyperactivity Disorder Symptoms and Asthma Management

PURPOSE

Children with comorbid Attention-Deficit/Hyperactivity Disorder (ADHD) and asthma are at an increased risk for adverse health outcomes and reduced quality of life. The objective of these analyses was to examine if self-reported ADHD symptoms in children with asthma are associated with asthma control, asthma controller medication adherence, quick relief medication use, pulmonary function, and acute healthcare utilization.

METHODS

We analyzed data from a larger study testing a behavioral intervention for Black and Latinx children with asthma aged 10-17 years and their caregivers. Participants completed the Conners-3AI self-report assessment for ADHD symptoms. Asthma medication usage data were collected for 3 weeks following baseline via electronic devices fitted to participants' asthma medications. Other outcome measures included the Asthma Control Test, self-reported healthcare utilization, and pulmonary function measured by spirometry testing.

RESULTS

The study sample consisted of 302 pediatric participants with an average age of 12.8 years. Increased ADHD symptoms were directly associated with reduced adherence to controller medications, but no evidence of mediation was observed. Direct effects of ADHD symptoms on quick-relief medication use, health care utilization, asthma control, or pulmonary function were not observed. However, the effect of ADHD symptoms on emergency room visits was mediated by controller medication adherence.

DISCUSSION

ADHD symptoms were associated with significantly reduced asthma controller medication adherence and indirectly with emergency room visits. There are significant potential clinical implications to these findings, including the need for the development of interventions for pediatric asthma patients with ADHD.

Psychometric evaluation of an electronic Asthma Symptom Diary for young children

BACKGROUND

Patient-reported outcome measures that facilitate self-report by children are needed to reduce the bias of proxy report. We previously developed an electronic Pediatric Asthma Symptom Diary (ePASD) to assess the severity of daily asthma symptoms and proximal impacts in children aged 6-11 years with mild to severe asthma. The ePASD, administered via a digital application with visuals, sounds, and text, is uniquely designed to minimize the importance of reading skills on children's ability to self-report accurately. Here, we describe the ePASD's psychometric properties.

METHODS

Ninety-one children aged 6-11 years with mild to severe asthma and their caregivers participated in 2 study visits, which consisted of training on the provisioned device and completing asthma-specific clinical outcome assessment (COA) questionnaires. The children self-completed the ePASD at home twice daily for 8 consecutive days. The scoring of the ePASD was guided by factor analyses, inter-item correlations, and internal consistencies. Reliability, discriminating ability, construct validity, and responsiveness were evaluated for ePASD items and candidate scores.

RESULTS

All COAs included in the study-the ePASD, Asthma Control Questionnaire (ACQ), Childhood Asthma Control Test, Pediatric Asthma Quality of Life Questionnaire-Standardized (PAQLQ[S]), and global ratings-demonstrated that the children exhibited few asthma-related symptoms and impacts at all timepoints, and consequently, showed little change over time. Internal consistencies (all Cronbach's alphas ≥ 0.52) and test-retest reliabilities (all intraclass correlation coefficients ≥ 0.60) were largely satisfactory. Patterns of convergent and divergent correlations supported the construct validity of ePASD scores. The ePASD symptom scores correlated moderately to strongly with PAQLQ(S) Symptom scores (all correlations ≥ - 0.46) and with ACQ scores (all correlations ≥ 0.42), as predicted. Evidence of the discriminating ability of ePASD items and composite scores was demonstrated by known-groups analyses.

CONCLUSIONS

The ePASD is a reliable and valid measure of asthma symptoms and proximal impacts in children aged 6-11 years with mild, moderate, or severe asthma. These results lay the psychometric groundwork for use of the ePASD in future clinical trials for the management of pediatric asthma. An ongoing pediatric asthma treatment trial is anticipated to provide evidence of the ePASD's responsiveness to change.

Assessing asthma symptoms in children: qualitative research supporting the development of the Pediatric Asthma Diary-Child (PAD-C) and Pediatric Asthma Diary-Observer (PAD-O)

BACKGROUND

Pediatric asthma has been identified by regulators, clinicians, clinical trial sponsors, and caregivers as an area in need of novel fit-for-purpose clinical outcome assessments (COAs) developed in accordance with the U.S. Food and Drug Administration's (FDA's) regulatory guidance for evaluating clinical benefit in treatment trials. To address this gap, the Patient-Reported Outcome (PRO) Consortium's Pediatric Asthma Working Group has continued development of 2 COAs to assess asthma signs and symptoms in pediatric asthma clinical trials to support efficacy endpoints: a PRO measure, the Pediatric Asthma Diary-Child (PAD-C) for children 8-11 years old (y.o.) and an observer-reported outcome measure, the Pediatric Asthma Diary-Observer (PAD-O) for caregivers of children 4-11 y.o. This qualitative research aimed to generate evidence regarding the content validity of the PAD-C and PAD-O.

METHODS

Semi-structured combined concept elicitation and cognitive interviews were conducted with a diverse sample of U.S. participants (15 children 8-11 y.o. and 30 caregivers of children 4-11 y.o.). All children had clinician-diagnosed mild to severe asthma. Interviews explored the experience of pediatric asthma and assessed the understanding and relevance of both measures. Interviews were conducted across 3 iterative rounds to allow for modifications.

RESULTS

Concept elicitation findings demonstrated that the core sign/symptom and impact concepts assessed in the PAD-C (cough, hard to breathe, out of breath, wheezing, chest tightness, and nighttime awakenings/symptoms) and PAD-O (cough, difficulty breathing, short of breath, wheezing, and nighttime awakenings/signs) correspond to those most frequently reported by participants; concept saturation was achieved. All PAD-C and PAD-O instructions and core items were well understood and considered relevant by most participants. Feedback from participants, the Pediatric Asthma Working Group, advisory panel, and FDA supported modifications to the measures, including addition of 1 new item to both measures and removal of 1 caregiver item.

CONCLUSIONS

Findings provide strong support for the content validity of both measures. The cross-sectional measurement properties of both measures and their user experience and feasibility in electronic format will be assessed in a future quantitative pilot study with qualitative exit interviews, intended to support the reliability, construct validity, final content, and, ultimately, FDA qualification of the measures.

A digital health application for managing pediatric asthma: Use and benefits

Childhood asthma is a common and serious chronic lung disease. Mobile health (mHealth) technologies may assist clinical providers, caregivers, and children in managing pediatric asthma. This study evaluated the Nemours app, an mHealth application. We examined: a) frequency of data access by providers and feature use by caregivers (parents/legal guardians) of 5-11-year-old children diagnosed with asthma and b) whether utilization was related to benefits. Nine providers (allergists/pulmonologists) and 80 patient-families (caregiver/child dyads) participated. Two-years of retrospective data were obtained for asthma control, in-person urgent healthcare utilization, and app utilization. Six-months of prospective data included asthma control, in-person urgent healthcare utilization, app utilization, surveys, and health literacy screeners. Providers (56%) accessed app data and caregivers (61%) utilized the app. Caregiver use of messaging feature predicted gains in health literacy scores (b = .44, p = .041), suggesting app use may offer some educational benefits. Implementation of strategies that support app engagement and utilization may help to maximize intended benefits.

Association between neutrophil lymphocyte ratio and status of symptom control in children and adolescents with bronchial asthma

Neutrophil lymphocyte ratio (NLR), an easy and readily available biomarker of systemic inflammation, has been less studied so far as a putative marker of asthma control. Our study aimed to assess its feasibility. A total of 90 asthmatic children, aged 5-18 years, diagnosed according to Global Initiative for Asthma (GINA) guidelines, were. Control status of asthma was assessed using the asthma control test (ACT) or childhood ACT and categorized as controlled group-1 (ACT > 19) and uncontrolled group-2 (ACT ≤ 19). The difference between mean values in both groups was analysed, finding a significant difference between children with and without a family history (p = 0.004) and those with and without a need for admission (p = 0.045). Also, a significant association was established between NLR and the type of severity of asthma (p = 0.049), but none between NLR and age, gender, BMI, coexisting allergic rhinitis, or asthma exacerbation. Thus we found no significant association between NLR and symptom control status. However, NLR has the potential to be a putative marker of inflammation, although its relative status to CRP needs further studies.

GEMA 5.3. Spanish Guideline on the Management of Asthma

The Spanish Guideline on the Management of Asthma, better known by its acronym in Spanish GEMA, has been available for more than 20 years. Twenty-one scientific societies or related groups both from Spain and internationally have participated in the preparation and development of the updated edition of GEMA, which in fact has been currently positioned as the reference guide on asthma in the Spanish language worldwide. Its objective is to prevent and improve the clinical situation of people with asthma by increasing the knowledge of healthcare professionals involved in their care. Its purpose is to convert scientific evidence into simple and easy-to-follow practical recommendations. Therefore, it is not a monograph that brings together all the scientific knowledge about the disease, but rather a brief document with the essentials, designed to be applied quickly in routine clinical practice. The guidelines are necessarily multidisciplinary, developed to be useful and an indispensable tool for physicians of different specialties, as well as nurses and pharmacists. Probably the most outstanding aspects of the guide are the recommendations to: establish the diagnosis of asthma using a sequential algorithm based on objective diagnostic tests; the follow-up of patients, preferably based on the strategy of achieving and maintaining control of the disease; treatment according to the level of severity of asthma, using six steps from least to greatest need of pharmaceutical drugs, and the treatment algorithm for the indication of biologics in patients with severe uncontrolled asthma based on phenotypes. And now, in addition to that, there is a novelty for easy use and follow-up through a computer application based on the chatbot-type conversational artificial intelligence (ia-GEMA).

Breathing zone pollutant levels are associated with asthma exacerbations in high-risk children

Background

Indoor and outdoor air pollution levels are associated with poor asthma outcomes in children. However, few studies have evaluated whether breathing zone pollutant levels associate with asthma outcomes.

Objective

Determine breathing zone exposure levels of NO 2 , O 3 , total PM 10 and PM 10 constituents among children with exacerbation-prone asthma, and examine correspondence with in-home and community measurements and associations with outcomes.

Methods

We assessed children's personal breathing zone exposures using wearable monitors. Personal exposures were compared to in-home and community measurements and tested for association with lung function, asthma control, and asthma exacerbations.

Results

81 children completed 219 monitoring sessions. Correlations between personal and community levels of PM 10 , NO 2 , and O 3 were poor, whereas personal PM 10 and NO 2 levels correlated with in-home measurements. However, in-home monitoring underdetected brown carbon (Personal:79%, Home:36.8%) and ETS (Personal:83.7%, Home:4.1%) personal exposures, and detected black carbon in participants without these personal exposures (Personal: 26.5%, Home: 96%). Personal exposures were not associated with lung function or asthma control. Children experiencing an asthma exacerbation within 60 days of personal exposure monitoring had 1.98, 2.21 and 2.04 times higher brown carbon (p<0.001), ETS (p=0.007), and endotoxin (p=0.012), respectively. These outcomes were not associated with community or in-home exposure levels.

Conclusions

Monitoring pollutant levels in the breathing zone is essential to understand how exposures influence asthma outcomes, as agreement between personal and in-home monitors is limited. Inhaled exposure to PM 10 constituents modifies asthma exacerbation risk, suggesting efforts to limit these exposures among high-risk children may decrease their asthma burden.

CLINICAL IMPLICATIONS

In-home and community monitoring of environmental pollutants may underestimate personal exposures. Levels of inhaled exposure to PM 10 constituents appear to strongly influence asthma exacerbation risk. Therefore, efforts should be made to mitigate these exposures.

CAPSULE SUMMARY

Leveraging wearable, breathing-zone monitors, we show exposures to inhaled pollutants are poorly proxied by in-home and community monitors, among children with exacerbation-prone asthma. Inhaled exposure to multiple PM 10 constituents is associated with asthma exacerbation risk.

Youth and caregiver asthma functioning and quality of life throughout the COVID-19 pandemic

Objectives

The COVID-19 pandemic resulted in daily functioning changes for many families. Adjustments in daily functioning may have impacted asthma management and subsequent morbidity. The current study seeks to build upon extant literature by exploring differences in youth asthma exacerbations and control, as well as youth and caregiver asthma-related quality of life (ArQOL) throughout COVID-19 transitional points.

Methods

Ninety-three youth (9-17 years old) with asthma and their caregivers completed measures of demographic/medical information, asthma control, and ArQOL. Participants were recruited between January 2020 and October 2021 via their medical appointments and a hospital registry. We conducted Kruskal-Wallis H-tests to examine differences in youth asthma exacerbations (measured by short-acting beta agonist use), asthma control, and ArQOL, as well as caregiver ArQOL, across phases of the COVID-19 pandemic.

Results

Asthma exacerbations were higher prior to the onset of the pandemic compared to "during lockdown" and "post-lockdown," H(2) = 7.31, p < .05. Youth's asthma control was lower prior to the onset of the pandemic compared to youth enrolled "post-lockdown," H(2) = 7.04, p < .05. There were no differences in youth ArQOL across the duration of the pandemic. Caregiver ArQOL was significantly higher in the "post-lockdown," period, compared to caregivers enrolled prior to the pandemic onset, H(2) = 9.86, p < .01.

Conclusion

Youth and caregiver asthma functioning improved following the onset of the pandemic. These findings build upon existing literature to highlight higher ArQOL in caregivers following the pandemic onset, likely related to improvements in youth asthma control and morbidity. Future research should explore trajectories of asthma and psychosocial functioning throughout the pandemic for families.

Changes in caregiver mental health and pediatric asthma control during COVID-19

OBJECTIVE

This study evaluated caregivers' stress and depressive symptoms, and children's asthma control, before COVID-19 began and after its onset among families in the RVA Breathes program.

METHODS

The RVA Breathes intervention, which took place in an urban city in the United States, includes asthma education delivered by a community health worker (CHW), a home assessment, and school nurse components. Participants included 125 children (5-11 years) with asthma and their caregivers (48% household income <$25,000) enrolled prior to the pandemic. Families were randomized to an active intervention arm (full intervention or intervention without school nurse component) or the control group. Caregivers completed the Center for Epidemiological Studies Depression Scale (CES-D) and the Perceived Stress Scale (PSS); children and caregivers completed the Childhood Asthma Control Test (cACT). Assessments pre-COVID-19 were compared to those completed after the pandemic's onset.

RESULTS

Children in both intervention groups had better cACT scores after the start of COVID-19 compared to before (t(55) = -2.131, p = .019; t(28) = -2.893, p = .004). Caregivers in the intervention groups had lower PSS scores after the start of COVID-19 compared to pre-COVID-19 (t(53) = 3.928, p < .001; t(28) = 2.568, p = .008). Furthermore, CES-D scores improved among caregivers in the full intervention (t(48) = 1.789, p = .040). Caregivers in the control condition did not report significant changes in stress or depressive symptoms.

CONCLUSIONS

Findings suggest that support from interventionists, including CHWs, might have alleviated stress and depressive symptoms during COVID-19, as well as improved asthma control during the pandemic.

The effect of nose clip on exercise-induced bronchoconstriction in adolescents

BACKGROUND

Oral breathing is considered to increase hyper-responsiveness of the airways. Data on the need for nose clip (NC) during exercise challenge test (ECT) in children and adolescents is scarce. Ouraim was to evaluate the role of NC during ECT in children and adolescents.

METHODS

A prospective, cohort study; children referred for ECT were evaluated on two separate visits, with and without a NC. Demographic, clinical data and measurements of lung functions were recorded. Allergy and asthma control were evaluated by Total Nasal Symptoms Score (TNSS) and Asthma Control Test (ACT) questionnaires.

RESULTS

Sixty children and adolescents (mean age 16.7 ± 1.1 years, 38% Female,) performed ECT with NC and 48 (80%) completed visit 2 (ECT without NC), 8.7 ± 7.9 days after visit 1. Following exercise, 29/48 patients (60.4%) with NC had a decline of ≥12% in forced expiratory volume in the first second (FEV1 ) (positive ECT) compared to only 16/48 (33.3%) positive tests without NC (p = 0.0008). Test result was changed in 14 patients from positive ECT (with NC) to negative ECT (no NC) and in only one patient from negative to positive. The use of NC resulted in greater FEV1 decline (median 16.3% predicted, IQR 6.0-19.1% predicted vs. median 4.5% predicted, IQR 1.6-18.4% predicted, p = 0.0001), and better FEV1 increase after bronchodil at or inhalation compared to ECT without NC. Higher TNSS scores did not predict higher probability to positive ECT.

CONCLUSIONS

The use of NC during ECT increases detection rate of exercise induced bronchoconstriction during ECT in the pediatric population. These findings strengthen the recommendation of nasal blockage during ECT in children and adolescents.

Fetal growth rather than prematurity determines lung function in children with asthma

BACKGROUND AND OBJECTIVE

Preterm birth or fetal growth has been associated with reduced lung function and asthma during childhood in the general population. We aimed to elucidate whether prematurity or fetal growth has a significant influence on lung function or symptoms in children with stable asthma.

METHODS

We included children with stable asthma who participated in the Korean childhood Asthma Study cohort. Asthma symptoms were determined by asthma control test (ACT). Percent predicted values of pre- and post-bronchodilator (BD) lung function including forced expiratory volume in 1 second (FEV1 ), forced vital capacity (FVC), and forced expiratory flow at 25%-75% of FVC (FEF25%-75% ) were measured. Lung function and symptoms were compared according to the history of preterm birth and birth weight (BW) for gestational age (GA).

RESULTS

The study population consisted of 566 children (age range: 5-18 years). There were no significant differences in lung function and ACT between preterm and term subjects. We observed no significant difference in ACT but significant differences were observed in pre- and post-BD FEV1 , pre- and post-BD FVC, and post-BD FEF25%-75% according to BW for GA in total subjects. Two-way ANOVA revealed that BW for GA rather than prematurity was a significant determining factor for pre- and post-BD lung function. After regression analysis, BW for GA was still a significant determining factor of pre- and post-BD FEV1 and pre- and post-BD FEF25%-75% .

CONCLUSION

Fetal growth rather than prematurity appears to have a significant effect on lung function in children with stable asthma.

Evaluating inhaler education interventions for hospitalized children with asthma: A randomized controlled trial

BACKGROUND

Most children with asthma have poor inhaler technique, with detrimental morbidity effects. Guidelines recommend clinicians provide inhaler education at every opportunity, yet resources are limited. A low-cost, technology-based intervention-Virtual Teach-to-Goal (V-TTG)-was developed to deliver tailored inhaler technique education with high fidelity.

OBJECTIVE

To evaluate whether V-TTG leads to less inhaler misuse among children with asthma who are hospitalized vs brief intervention (BI, reading steps aloud).

METHODS

A single-center randomized controlled trial of V-TTG vs BI was conducted with 5-to-10-year-old children with asthma hospitalized between January 2019 and February 2020. Inhaler technique was assessed pre- and post-education using 12-step validated checklists (misuse: < 10 steps correct).

RESULTS

Among 70 children enrolled, mean age was 7.8 years (SD = 1.6). Most (86%) were Black. Most had an emergency department visit (94%) or hospitalization (90%) in the previous year. At baseline, nearly all children misused inhalers (96%). The proportion of children with inhaler misuse decreased significantly in V-TTG (100%→74%, P = .002) and BI (92%→69%, P = .04) groups, with no difference between groups at both time points (P = .2 and .9). On average, children performed 1.5 more steps correctly (SD = 2.0), with greater improvement with V-TTG (mean [SD] = 1.7 [1.6]) vs BI (mean [SD] = 1.4 [2.3]), though not significant (P = .6). Concerning pre and post technique, older children were significantly more likely than younger children to show more correct steps (mean change = 1.9 vs 1.1, P = .002).

CONCLUSION

A technology-based intervention for tailored inhaler education led to improved technique among children, similarly to reading steps aloud. Older children saw greater benefits. Future studies should evaluate the V-TTG intervention across diverse populations and disease severities to identify the greatest impact.

CLINICAL TRIAL REGISTRATION

NCT04373499.

Metabolomics identifies disturbances in arginine, phenylalanine, and glycine metabolism as differentiating features of exacerbating atopic asthma in children

Background

Asthma exacerbations are highly prevalent in children, but only a few studies have examined the biologic mechanisms underlying exacerbations in this population.

Objective

High-resolution metabolomics analyses were performed to understand the differences in metabolites in children with exacerbating asthma who were hospitalized in a pediatric intensive care unit for status asthmaticus. We hypothesized that compared with a similar population of stable outpatients with asthma, children with exacerbating asthma would have differing metabolite abundance patterns with distinct clustering profiles.

Methods

A total of 98 children aged 6 through 17 years with exacerbating asthma (n = 69) and stable asthma (n = 29) underwent clinical characterization procedures and submitted plasma samples for metabolomic analyses. High-confidence metabolites were retained and utilized for pathway enrichment analyses to identify the most relevant metabolic pathways that discriminated between groups.

Results

In all, 118 and 131 high-confidence metabolites were identified in positive and negative ionization mode, respectively. A total of 103 unique metabolites differed significantly between children with exacerbating asthma and children with stable asthma. In all, 8 significantly enriched pathways that were largely associated with alterations in arginine, phenylalanine, and glycine metabolism were identified. However, other metabolites and pathways of interest were also identified.

Conclusion

Metabolomic analyses identified multiple perturbed metabolites and pathways that discriminated children with exacerbating asthma who were hospitalized for status asthmaticus. These results highlight the complex biology of inflammation in children with exacerbating asthma and argue for additional studies of the metabolic determinants of asthma exacerbations in children because many of the identified metabolites of interest may be amenable to targeted interventions.

Coordinated Health Care Interventions for Childhood Asthma Gaps in Outcomes (CHICAGO) plan

Background

Evidence-based strategies to improve outcomes in minority children with uncontrolled asthma discharged from the emergency department (ED) are needed.

Objectives

This multicenter pragmatic clinical trial was designed to compare an ED-only intervention (decision support tool), an ED-only intervention and home visits by community health workers for 6 months (ED-plus-home), and enhanced usual care (UC).

Methods

Children aged 5 to 11 years with uncontrolled asthma were enrolled. The change over 6 months in the Patient-Reported Outcomes Measurement Information System Asthma Impact Scale score in children and Satisfaction with Participation in Social Roles score in caregivers were the primary outcomes. The secondary outcomes included guideline-recommended ED discharge care and self-management.

Results

Recruitment was significantly lower than expected (373 vs 640 expected). Of the 373 children (64% Black and 31% Latino children), only 63% completed the 6-month follow-up visit. In multivariable analyses that accounted for missing data, the adjusted odds ratios and 98% CIs for differences in Asthma Impact Scores or caregivers' Satisfaction with Participation in Social Roles scores were not significant. However, guideline-recommended ED discharge care was significantly improved in the intervention groups versus in the UC group, and self-management behaviors were significantly improved in the ED-plus-home group versus in the ED-only and UC groups.

Conclusions

The ED-based interventions did not significantly improve the primary clinical outcomes, although the study was likely underpowered. Although guideline-recommended ED discharge care and self-management did improve, their effect on clinical outcomes needs further study.

Comparison of Asthma Control among Children 5-18 Years of Age by Asthma Control Test Questionnaire of Global Initiative for Asthma 2017 (GINA-2017) Against Spirometry

OBJECTIVE

To compare asthma control by Asthma Control Test (ACT)/Childhood Asthma Control Test (cACT) Questionnaire of Global Initiative for Asthma 2017 (GINA-2017) against spirometry in children, 5-18 y of age, with asthma.

METHODS

A prospective observational study was conducted between July 2017 and March 2019 in pulmonology OPD of a tertiary care center. Children with asthma aged 5-18 y, falling under the inclusion criteria had spirometry and cACT/ACT questionnaire before starting inhaled corticosteroids. After 12 wk, symptom control was reassessed by ACT/cACT and spirometry. Chi-square/Fischer exact test and paired t-test/Mann-Whitney U test used for qualitative and quantitative data, respectively.

RESULTS

ACT/cACT pretreatment score was 12.76 (2.521), and at follow-up the score was 23.94 (1.941) (p < 0.001). Control by GINA increased from 2.04% to 91.84% at follow-up (p < 0.001). Significant improvement in forced expiratory volume in first second (FEV1), forced expiratory volume/forced vital capacity (FEV1/FVC), forced expiratory flow between 25 and 75% of FVC (FEF25-75) and peak expiratory flow rate (PEFR) between pretreatment and follow-up seen were -71.86%, 106.84%, 101.82%, and 97.51% vs. 82.2%, 109.55%, 110.38%, and 107.00%, respectively. Positive correlation between ACT/cACT and FEV1 (r = 0.26, p ≤ 0.05), PEFR (r = 0.30, p ≤ 0.05).

CONCLUSIONS

There is a good correlation of symptom control between ACT/cACT and spirometry with significant positive correlation for FEV1, PEFR.

Clinical outcomes of children using a metered dose inhaler with a sleeve attachment device to improve ease of use

Background

Activating pressurized metered dose inhalers (pMDIs) is often challenging for children. The Easy Squeezy (ES) is a novel sleeve attachment device that reduces activation force by 3 times. Although users have favored using the ES over using a pMDI alone, the clinical impact of the ES remains unknown. The aim of this study was to compare lung function and quality of life between ES users and users of a pMDI alone.

Objectives

Our aim was to measure and compare lung function of asthmatic children after they used the ES and pMDI alone.

Methods

In this crossover study we recruited 65 asthmatic children between the ages of 5 and 12 years. The participants were randomized into 2 groups. One of the groups used the ES for 6 weeks whereas the other group used a pMDI. After 6 weeks the participants crossed over to the other group. Lung function test parameters were measured after randomization and after each 6 weeks of device use. Quality of life (measured by the Patient Asthma Quality of Life Questionnaire [PAQLQ]) and Childhood Asthma Control Test were measured after each period of device use.

Results

There was no significant difference in the baseline lung function between the groups. The ES group had a significantly lower percentage difference between prebronchodilator and postbronchodilator FEV1 values. Although no significant differences were observed in PAQLQ scores between the groups, more patients in the ES group had improvement of their PAQLQ score than did patients in the group using a pMDI alone. Total Childhood Asthma Control Test scores were significantly higher for the ES group.

Conclusions

The ES device may allow users' asthma to be better controlled than by using a pMDI alone.

Oropharyngeal Microbiota Clusters in Children with Asthma or Wheeze Associate with Allergy, Blood Transcriptomic Immune Pathways, and Exacerbation Risk

Rationale: Children with preschool wheezing or school-age asthma are reported to have airway microbial imbalances. Objectives: To identify clusters in children with asthma or wheezing using oropharyngeal microbiota profiles. Methods: Oropharyngeal swabs from the U-BIOPRED (Unbiased Biomarkers for the Prediction of Respiratory Disease Outcomes) pediatric asthma or wheezing cohort were characterized using 16S ribosomal RNA gene sequencing, and unsupervised hierarchical clustering was performed on the Bray-Curtis β-diversity. Enrichment scores of the Molecular Signatures Database hallmark gene sets were computed from the blood transcriptome using gene set variation analysis. Children with severe asthma or severe wheezing were followed up for 12-18 months, with assessment of the frequency of exacerbations. Measurements and Main Results: Oropharyngeal samples from 241 children (age range, 1-17 years; 40% female) revealed four taxa-driven clusters dominated by Streptococcus, Veillonella, Rothia, and Haemophilus. The clusters showed significant differences in atopic dermatitis, grass pollen sensitization, FEV1% predicted after salbutamol, and annual asthma exacerbation frequency during follow-up. The Veillonella cluster was the most allergic and included the highest percentage of children with two or more exacerbations per year during follow-up. The oropharyngeal clusters were different in the enrichment scores of TGF-β (transforming growth factor-β) (highest in the Veillonella cluster) and Wnt/β-catenin signaling (highest in the Haemophilus cluster) transcriptomic pathways in blood (all q values <0.05). Conclusions: Analysis of the oropharyngeal microbiota of children with asthma or wheezing identified four clusters with distinct clinical characteristics (phenotypes) that associate with risk for exacerbation and transcriptomic pathways involved in airway remodeling. This suggests that further exploration of the oropharyngeal microbiota may lead to novel pathophysiologic insights and potentially new treatment approaches.

A systematic review of questionnaires measuring asthma control in children in a primary care population

Several questionnaires are used to measure asthma control in children. The most appropriate tool for use in primary care is not defined. In this systematic review, we evaluated questionnaires used to measure asthma control in children in primary care and determined their usefulness in asthma management. Searches were performed in the MEDLINE, Embase, Web of Science, Google Scholar and Cochrane databases with end date 24 June 2022. The study population comprised children aged 5-18 years with asthma. Three reviewers independently screened studies and extracted data. The methodological quality of the studies was assessed, using the COSMIN criteria for the measurement properties of health status questionnaires. Studies conducted in primary care were included if a minimum of two questionnaires were compared. Studies in secondary or tertiary care and studies of quality-of-life questionnaires were excluded. Heterogeneity precluded meta-analysis. Five publications were included: four observational studies and one sub-study of a randomized controlled trial. A total of 806 children were included (aged 5-18 years). We evaluated the Asthma Control Test (ACT), childhood Asthma Control Test (c-ACT), Asthma APGAR system, NAEPP criteria and Royal College of Physicians' '3 questions' (RCP3Q). These questionnaires assess different symptoms and domains. The quality of most of the studies was rated 'intermediate' or 'poor'. The majority of the evaluated questionnaires do not show substantial agreement with one another, which makes a comparison challenging. Based on the current review, we suggest that the Asthma APGAR system seems promising as a questionnaire for determining asthma control in children in primary care.

Asthma-related lung function and physical activity patterns among children living in urban neighborhoods

OBJECTIVE

Black and Latino American children residing in urban environments are at increased risk for comorbid asthma and obesity. Physical activity (PA) is a modifiable behavior known to contribute to the asthma-obesity phenotype. While research has indicated links between optimal asthma status and high PA among children, little is documented about whether this group may display other asthma and PA patterns that warrant clinical attention and tailored interventions.

METHODS

Children with persistent asthma (N = 97) ages 7-9 and their caregivers from urban neighborhoods completed daily measures of asthma status and moderate-to-vigorous physical activity (MVPA) and questionnaires about health and sociodemographic characteristics. Clinical asthma guidelines (e.g. FEV1 ≥ 80%) and sample means were used to categorize children into high or low lung function and MVPA patterns. Individual, family, and contextual differences across lung function and MVPA patterns were investigated.

RESULTS

Twenty-nine percent of participants displayed optimal lung function and high MVPA. The remainder of the sample exhibited various less optimal patterns (e.g. poorer lung function and high MVPA). Caregivers of children displaying poorer lung function and high MVPA levels were more likely to report asthma related fears than caregivers of children with low MVPA levels regardless of lung function status.

CONCLUSIONS

Asthma and PA interventions can be tailored to better address each child's unique clinical and behavioral patterns. An enhanced understanding of risk factors for suboptimal patterns of asthma status and PA may aid in multicomponent intervention efforts.

Rapid maxillary expansion and nasal patency in mouth breathing children with maxillary atresia due to or not due to allergic rhinitis

AIM

To evaluate the effects of rapid maxillary expansion (RME) on nasal patency in mouth breathing (MB) children with maxillary atresia due to or not due to allergic rhinitis (AR) associated with asthma.

METHODS

Fifty-three MB children/adolescents (aged 7-14 years) with mixed or permanent dentition and maxillary atresia participated, with or without unilateral or bilateral crossbite. They formed the groups: RAD (AR + asthma; clinical treatment, RME); RAC (AR + asthma; clinical treatment, no RME); and D (mouth breathers; RME only). RAD and RAC patients received topical nasal corticosteroid and/or systemic H1 antihistamine (continuous use) and environmental exposure control. All were evaluated before RME (T1) and 6 months after (T2) with the CARATkids score, acoustic rhinometry, and nasal cavity computed tomography (CT). Patients RAD and D underwent RME (Hyrax® orthopedic appliance).

RESULTS

A significant reduction in the CARATkids score occurred in the RAD (-4.06; p < 0.05), similarly when patient and parent/guardian scores were evaluated (-3.28 and -3.16, respectively). Acoustic rhinometry (V5) showed increased nasal volume in all groups, significantly higher in RAD patients than in RAC and D (0.99 × 0.71 × 0.69 cm³, respectively). CT of the nasal cavity documented increased volume in all three groups, with no significant differences between them.

CONCLUSION

In MB patients with AR, asthma, and maxillary atresia, RME increased nasal cavity volume and improved respiratory symptoms. However, it should not be used as the only treatment for managing patients with respiratory allergies.