Living with childhood asthma: parental perceptions of risk in the household environment and strategies for coping

Influences on indoor environmental trigger remediation uptake for children and young people with asthma: A scoping review

INTRODUCTION

Children and young people (CYP) with asthma can benefit from reduced exposure to indoor environmental allergens and triggers but may not consistently have avoidance strategies implemented. To inform future interventions to increase trigger and allergen avoidance and enhance asthma control, a greater understanding of the influences on avoidance behaviours is necessary.

METHODS

A systematic scoping review was selected to summarize evidence on what influences family uptake of indoor environmental asthma trigger avoidance strategies for CYP with asthma and identify research gaps. Primary studies of any design, including CYP (≤18 years) with asthma, and/or parent-carers, available in English and conducted since 1993, were eligible. Searches included nine databases, hand-searching reference lists and citation searching.

FINDINGS

Thirty-three articles were included and are summarized narratively due to heterogeneity. Influences appear complex and multifactorial and include barriers to strategy uptake, health beliefs and personal motivation. Research specifically related to family understanding of allergic sensitisation status and exposure risks, and how these may inform avoidance implementation is required. Patient and public involvement (PPI) was not reported in included articles, although two studies used participatory methods.

CONCLUSION

There is limited research on family asthma trigger management, particularly what influences current management behaviours. Variation in families' ability to identify important triggers, understand exposure risk and consistently reduce exposures warrants further exploratory research to explain how families reach avoidance decisions, and what future interventions should aim to address. Further PPI-informed research to address such gaps, could enable theory-based, person-centred interventions to improve the uptake of asthma trigger remediation.

PATIENT OR PUBLIC CONTRIBUTION

An asthma-specific PPI group contributed to the decision-making for the funding for the wider project this review sits within. The findings of this scoping review have informed the subsequent phases of the project, and this was discussed with PPI groups (both adult and CYP groups) when proposing the next phases of the project.

Experiences of parents and carers in managing asthma in children: a qualitative systematic review

OBJECTIVE

The objective of the review was to identify, critically appraise and synthesize the best available qualitative evidence to understand the lived experiences of parents and carers caring for a child aged 0-18 years with asthma in any setting and managing their condition.

INTRODUCTION

Asthma affects around 14% of children and despite the availability of effective therapies, asthma control is suboptimal and hospitalization rates remain high. Mothers predominantly manage their child's asthma and experience stress and exhaustion due to complex treatments and balancing work and family life. This review provides an understanding of the barriers parents and carers face in managing their child's asthma and highlights the needs of families throughout their asthma journey.

INCLUSION CRITERIA

The review considered qualitative studies examining the experiences of parents and carers caring for a child with asthma, wheeze or bronchiolitis and managing their condition. Research designs included, but were not limited to, phenomenology, grounded theory, ethnography, and action and feminist research.

METHODS

A comprehensive search using PubMed, CINAHL, Embase, PsycINFO, Web of Science and ProQuest for published and unpublished studies was undertaken in June 2017 and December 2017. Studies published in English from 1972 to 2017 were included. The recommended Joanna Briggs Institute approach to critical appraisal, study selection, data extraction and data synthesis was used.

RESULTS

Seventy-seven qualitative studies were included in this review, including grounded theory, phenomenology and ethnography methodologies. From these 77 studies, 1655 participants from a variety of cultural backgrounds and socio-economic status groups were represented. The methodological quality of included articles was sound and participants' voices were strong. A total of 1161 findings (966 unequivocal and 195 credible) were extracted and grouped into 41 categories, based on similarity in meaning. From the 41 categories, seven synthesized statements were produced: i) Negotiating the meaning of having a child with asthma, ii) Impact on family life, iii) The process of getting a diagnosis and learning about asthma, iv) Relationships with healthcare professionals and the emergency department experience, v) Medication beliefs, concerns and management strategies, vi) With time, parents and carers become more comfortable managing their child's asthma, vii) The need for support.

CONCLUSIONS

This review highlights the difficulties parents and carers face when caring for a child with asthma and managing their child's condition. Attaining a definitive diagnosis of asthma can be challenging, and parents and carers express uncertainty and fear due to continuing symptoms and repeated hospitalizations. Healthcare professionals should ensure that a clear diagnostic strategy and treatment plan are communicated so parents and carers have an understanding of the pathway to receiving an actual diagnosis. Comprehensive asthma education is essential at the onset of asthma symptoms, with accurate, easy to understand and culturally relevant information. Supportive relationships, with healthcare professionals taking a partnership approach, ensuring adequate time, continuity of care, regular follow-up, and addressing the psychosocial and cultural needs and concerns of parents and carers, are recommended. Support groups and training for education staff is imperative to ensure they can support parents and carers, provide asthma friendly environments and respond appropriately in an asthma emergency.

Variable risk of atopic disease due to indoor fungal exposure in NHANES 2005-2006

BACKGROUND

Exposure to damp indoor environments is associated with increased risk of eczema, allergy and asthma. The role of dampness-related exposures and risk of allergic diseases are yet to be fully explored in the US population.

OBJECTIVE

We assess whether exposure to fungi, house dust mites and endotoxin increases the risk of eczema, allergy and asthma in children and adults participating in NHANES 2005-2006.

METHODS

A total of 8412 participants (2849 were children aged between 6 and 17 years) were recruited in the 2005-2006 survey. We used multiple logistic regression to investigate whether mildew/musty odour and increased concentrations of Alternaria alternata allergen, Aspergillus fumigatus antigens, house dust mite and endotoxin antigens increase the risk of eczema, allergy and asthma. We stratified models by total IgE < 170 and ≥ 170 KU/L to assess allergic and non-allergic asthma outcomes. Exposure to multiple biological agents and risk of reporting eczema, allergy and asthma were also investigated.

RESULTS

Reporting of a mildew/musty odour was associated with increased risk of childhood asthma (OR 1.60; 95% CI 1.17-2.19), and adult eczema, allergy and asthma (OR 1.92; 95% CI 1.39-2.63, OR 1.59 95% CI 1.26-2.02 and OR 1.61 95% CI 1.00-2.57, respectively). Risk of asthma was associated with total IgE ≥ 170 KU/L in children (OR 1.81; 95% CI 1.01-3.25) and total IgE < 170 KU/L in adults (OR 1.91; 95% CI 1.07-3.42). Children and adults exposed to more than eight biological agents present in the home were at reduced risk of eczema (OR 0.17; 95% CI 0.04-0.77) and asthma (OR 0.49; 95% CI 0.25-0.97), respectively.

CONCLUSION

Exposure to a mildew/musty odour, as a proxy for exposure to fungus, was implicated in an increased risk of atopic diseases. Sensitisation may play a different role in children and adults, and exposure to multiple allergens may reduce the risk of atopic disease.

Fuel poverty increases risk of mould contamination, regardless of adult risk perception & ventilation in social housing properties

INTRODUCTION

Fuel poverty affects 2.4 million UK homes leading to poor hygrothermal conditions and risk of mould and house dust mite contaminations, which in turn increases risk of asthma exacerbation. For the first time we assess how fuel poverty, occupants' risk perception and use of mechanical ventilation mediate the risk of mould contamination in social housing.

METHODS

Postal questionnaires were sent to 3867 social housing properties to collect adult risk perception, and demographic and environmental information on occupants. Participant details were linked to data pertaining to the individual properties. Multiple logistic regression was used to calculate odds ratios and confidence intervals while allowing for clustering of individuals coming from the same housing estate. We used Structured Equation Modelling and Goodness of Fit analysis in mediation analyses to examine the role of fuel poverty, risk perception, use of ventilation and energy efficiency.

RESULTS

Eighteen percent of our target social housing populations (671 households) were included into our study. High risk perception (score of 8-10) was associated with reduced risk of mould contamination in the bedrooms of children (OR 0.5 95% CI; 0.3-0.9) and adults (OR 0.4 95% CI; 0.3-0.7). High risk perception of living with inadequate heating and ventilation reduced the risk of mould contamination (OR 0.5 95% CI; 0.3-0.8 and OR 0.5 95% CI; 0.3-0.7, respectively). Participants living with inadequate heating and not heating due to the cost of fuel had an increased risk of mould contamination (OR 3.4 95% CI; 2.0-5.8 and OR 2.2 95% CI; 1.5-3.2, respectively). Increased risk perception and use of extractor fans did not mediate the association between fuel poverty behaviours and increased risk of mould contamination.

DISCUSSION

Fuel poverty behaviours increased the risk of mould contamination, which corresponds with existing literature. For the first time we used mediation analysis to assess how this association maybe modified by occupant behaviours. Increased risk perception and use of extractor fans did not modify the association between fuel poverty and mould contamination. This suggests that fuel poor populations may not benefit from energy efficiency interventions due to ineffective heating and ventilation practices of those occupants residing participating households. Our findings may be modified by a complex interaction between occupant behaviours and the built environment. We found that participant age, occupancy, SES, pets, drying washing indoors, geographic location, architectural design/age of the property, levels of insulation and type of heating regulated risk of mould contamination.

CONCLUSION

Fuel poverty behaviours affected around a third of participating households and represent a risk factor for increased exposures to damp and mouldy conditions, regardless of adult risk perception, heating and ventilation practices. This requires multidisciplinary approach to assess the complex interaction between occupant behaviours, risk perception, the built environment and the effective use of heating and ventilation practices.

STUDY IMPLICATIONS

Our findings have implications for housing policies and future housing interventions. Effective communication strategies focusing on awareness and perception of risk may help address indoor air quality issues. This must be supported by improved household energy efficiency with the provision of more effective heating and ventilation strategies, specifically to help alleviate those suffering from fuel poverty.