Jurnal Anak
Jurnal Anak
                                                                                                                                                              Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
                                     asthma in children
                                     Warren Lenney,1,2,3 Andrew Bush,4,5,6 Dominic A Fitzgerald,7,8 Monica Fletcher,3,9
                                     Anders Ostrem,10 Soren Pedersen,11 Stanley J Szefler,12,13 Heather J Zar,14,15 on behalf
                                     of the GSK Paediatric Project Advisory Board and Committee
For numbered affiliations see        Abstract                                                         a separate clinical entity.2 The pathophysiology
end of article.                      Asthma is the most common chronic condition in                   of asthma in all ages of patients was thought to
                                     children worldwide. It affects daytime activities,               primarily involve bronchial smooth muscle hyper-
Correspondence to                                                                                     trophy with intermittent smooth muscle spasm.3 4
                                     sleep and school attendance and causes anxiety
Professor Warren Lenney,
GlaxoSmithKline, 980 Great           to parents, families and other carers. The quality of            With greater knowledge of the underlying immune
West Road, London TW8 9GS,           asthma diagnosis and management globally still needs             mechanisms,5 6 ‘asthma’ gradually became used as
UK; w
     .lenney46@hotmail.co.u k   substantial improvement. From infancy to the teenage             a term for an inflammatory condition with ICS
                                     years, there are age-specific challenges, including              recommended as the first-line controller7; but
Received 2 February 2018
Revised 28 March 2018                both underdiagnosis and overdiagnosis with stigma-               ‘asthma’ is now no more a diagnosis than ‘anaemia’
Accepted 9 April 2018                related barriers to treatment in some cultures and in            or ‘arthritis’ and should only be used as an umbrella
Published Online First               adolescents. Guidelines are increasingly evidence based,         term to describe a clinical spectrum that includes
14 May 2018                          but their impact on improving outcomes has been                  symptoms of wheeze, breathlessness, chest tight-
                                     negligible in many parts of the world, often due to lack         ness and cough.6 Some have questioned whether
                                     of implementation. New thinking is needed to enable              the term ‘asthma’ should be abandoned altogether
                                     substantial improvements in outcomes. The disease                due to the increasing recognition of many different
                                     varies globally and plans will need to differ for individual     phenotypes in all age groups.8 9 However, prob-
                                     countries or places where region-specific barriers prevent       ably better than abandoning this term is to ask the
                                     optimal care. A wide selection of educational activities         question: ‘Which of the asthmas does this patient
                                     is needed, including community-targeted initiatives,             have?’6
                                     to engage with families. The Paediatric Asthma Project              There have been successful attempts to improve
                                     Plan has been initiated to strengthen diagnosis and              the education of healthcare professionals, children
                                     management of asthma. This encompasses a vision for              and their families.10 However, childhood ‘asthmas’
                                     the next 10–15 years, building on the knowledge and              remain poorly diagnosed, with control falling
                                     experience from previous educational projects. It will take      short of expected standards. The 2015 National
                                     into account the educational needs of patients, carers           Review of Asthma Deaths in England & Wales
                                     and healthcare professionals as well as the accessibility        demonstrated that paediatric case record-keeping
                                     and affordability of medication, particularly in low and         was worse than that in adults, the overall stan-
                                     middle-income countries where the prevalence of asthma           dard of care for children and young people being
                                     is rising more rapidly. This overview presents a first step      inadequate.11 The most recent asthma guidelines
                                     for those involved in the diagnosis and management               from the UK National Institute for Health and
                                     of childhood asthma to strengthen care for children              Care Excellence focus on recommendations for
                                     globally.                                                        diagnosis and management of patients with mild-
                                                                                                      to-moderate asthma and are targeted at primary
                                        ‘Each generation is equidistant from                          care physicians.12 Many issues contribute to the
                                        barbarism.’                                                   inability to accurately diagnose asthma in children,
                                            Alfred North Whitehead, mathematician                     including failure to perform any objective tests,
                                                      and philosopher (1861–1947)                     issues surrounding age appropriateness of tests,
                                                                                                      misunderstanding of the significance of symptoms
                                                                                                      and—especially in some areas of the world—stigma.
                                     Introduction                                                     Patients, parents and carers have misconceptions
                                     Why is the quality of asthma diagnosis in children               about asthma control in children13 that differ
                                     so universally poor? Why, despite our increased                  across the world.14 It is vital to recognise these
                                     knowledge, a profusion of evidence-based guide-                  differences, train local healthcare professionals
                                     lines and the development of effective medica-                   and develop a comprehensive global plan that will
                                     tions, do we remain incapable of improving asthma                benefit children wherever they live—an objective
                                     control, and preventing asthma attacks and death,                of the Lancet Asthma Commission.6 This overview
                                     in many parts of the world? Surely, we can do better.            aims to highlight the global burden of childhood
                                        The word ‘asthma’ has been used in children and               asthma, recognising regional differences around
                                     in adults for centuries.1 Nearly 50 years ago, just              the world and determine a road map to develop a
                                     before inhaled corticosteroids (ICS) were devel-                 training and education programme to improve the
 To cite: Lenney W, Bush A,          oped, we were told that all recurrent wheezing in                diagnosis and management of these very common
 Fitzgerald DA, et al. Thorax        children fitted into ‘asthma’ and that ‘wheezy bron-             conditions. While every effort has been made to
 2018;73:662–669.                    chitis’ in the preschool age group did not exist as              provide source references for the information
662                                            Lenney W, et al. Thorax 2018;73:662–669. doi:10.1136/thoraxjnl-2018-211626
                                                                                                              State of the art review
presented, some statements are necessarily opinion based as a                not be feasible in some below 3 years of age, and in resource-
                                                                                                                                                  Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
definitive citation is not available.                                        poor regions.33 Airway inflammation and airflow limitation are
                                                                             difficult to measure in young children, but all too often are not
                                                                             even attempted.34 This may result in undertreatment of chil-
The ‘Asthmas’
                                                                             dren with eosinophilic airway inflammation and overtreatment
Asthma should be considered a disease with a broad clinical spec-
trum, making no assumptions about the underlying pathology.                  of children with transient, non-eosinophilic wheezing.32 Under-
Airway disease should be deconstructed into components of                    treatment may have consequences for the child with asthma, in
fixed and variable obstructions, inflammation (presence and                  terms of chronic symptoms and repeated attacks of wheeze,35 36
type) and infection.6 The context should be considered, including            although early intervention with ICS does not prevent progres-
comorbidities such as obesity, and social and environmental                  sion to eosinophilic airway inflammation.37–40 Overtreatment
issues. The latter include adherence and exposure to allergens               of transient wheezing risks treatment side effects without any
and pollutants, with emphasis on identifying what is treatable.15            benefit.
This approach highlights that asthma in high-income countries                   Most asthma symptoms in children are intermittent and vari-
may not be the same as that in the high-infection, high-pollution            able,7 but children may adapt their lifestyle to minimise symp-
settings that are common in low and middle-income countries                  toms by reducing physical activity; so it is vital that we really
(LMICs). The childhood asthmas are a spectrum of disease with                understand their true level of asthma control.41 Control by ICS
similar clinical features but with wide variations in presentation,          is the present cornerstone of treatment in eosinophilic airway
aetiology and pathophysiology.16 17 The pattern of inflamma-                 inflammation-driven asthma, yet poor adherence is common and
tory phenotypes is different from that in adults, with eosino-               remains under-recognised.42 Even with the use of short courses
philic phenotypes predominating.18 Symptoms and markers of                   of oral corticosteroids (OCS) to relieve asthma attacks, there is
inflammation in children do not always correlate,19 and there are            variation in the dosage used and the length of the OCS course
no reliable, evidence-based biomarkers for accurate diagnosis,               within the UK alone.43 There are concerns from the USA about
monitoring response to therapy or risk assessment.                           the overuse of short courses of OCS,44 and global standardisa-
   Prenatal factors associated with subsequent asthma inception              tion in future would be helpful. Intentional barriers to adherence
include a family history of atopic disease, maternal smoking and             within the family setting are common. These may have unsci-
asthma, environmental pollution (especially tobacco smoke and                entific bases driven by culture-specific perceptions and medica-
indoor biomass exposure), diet, nutrition, maternal stress, use of           tion beliefs.45 Effective education can reduce these concerns and
antibiotics and birth by caesarean section.17 In childhood, factors          increase willingness to accept ongoing preventative treatment. A
associated with more severe asthma symptoms and worse asthma                 clear strategy for early review of treatment and the management
control include allergic sensitisation (particularly multiple early          plan is essential, but rarely takes place.46
aeroallergen sensitisation20–22) and exposure to high environ-                  Lower airway deposition of medication can be improved
mental levels of the allergen. Allergic conditions such as atopic            by the use of a spacer,40 although poor technique occurs with
dermatitis or allergic rhinitis, early severe viral respiratory infec-       most inhaler systems47 and recommendations in guidelines are
tions (especially rhinovirus C or respiratory syncytial virus),              not always followed.48 The high cost and lack of availability
decreased lung function in infancy, small family size, low socio-            of commercially produced spacers limit their use in LMICs,
economic status, antibiotic usage, infections and gender may all             although spacers made with plastic bottles can be equally effec-
influence asthma severity21 23 Secondhand tobacco smoke, use of              tive.49 In some LMICs, access to any form of care can be lacking
biomass fuels and air pollution are associated with an increased             or care may be unaffordable.49
likelihood of attacks in those who already have asthma.24 The                   Teenagers often wish to take charge of their own health;
influence of these factors varies globally.23 24 Fortunately, smoke-         some may stop medication due to stigma or embarrass-
free legislation has achieved substantial benefits for child respi-          ment.50 Barriers to asthma management are more common in
ratory health, including lower hospital admission rates and                  teenage boys,50 but teenage girls fare worse in overall asthma
hospital attendances for asthma attacks.25 26 However, these                 control.51 In adolescence, a lack of self-management skills and
gains are being jeopardised by the increasing promotion of e-cig-            insufficient health literacy knowledge contribute to poorer
arettes and the often weak responses by the legislature.                     outcomes and worse adherence.52 Teenagers with asthma are
                                                                             at risk of being neglected due to the gap in available services,
Age-specific challenges to asthma diagnosis and                              and the fact that this is an age when patients do not regularly
management                                                                   attend appointments.53 Neither paediatric nor adult clinics
Diagnosis is particularly challenging in the first 3 years of life,          seem adept with the transition of care.53 Cooperation between
both in identifying whether the child has an airway disease at all           paediatric asthma specialists and primary care physicians is
and in recognising the underlying pathophysiology.27–31 Recur-               essential to strengthen this transition and optimise long-term
rent wheezing is common but most will lose their symptoms by                 care.54–58
the age of 6 years.27 Diagnosis is made almost entirely on a clin-              Identification of children whose symptoms will persist needs
ical history of recurrent wheeze, recurrent cough for days, chest            to be improved.9 59 The Melbourne longitudinal cohort study
tightness, breathlessness and sometimes includes response to a               has followed children from 7 to more than 50 years of age.60
trial of ICS treatment.28 These symptoms, however, do not tell               Those with initial severe asthma were more likely to have symp-
us which child has which specific phenotype.28 There is no stan-             toms persisting throughout, with lung function remaining low
dard definition for the type, severity or frequency of symptoms              from study enrolment.60 The Asthma Predictive Index may
in this young age group, and evidence-based recommendations                  provide improved predictions but lacks sensitivity or specificity
are lacking.32 Should we routinely measure blood eosinophil                  and has not been validated in LMIC settings.61 Among children
and/or IgE levels, perform skin prick tests and attempt lung                 with mild-to-moderate asthma, 75% have been shown to have
function and bronchodilator responsiveness assessments?                      abnormal lung growth in childhood, often with a further decline
Many of these are possible in young children, although may                   in early adulthood.62
Lenney W, et al. Thorax 2018;73:662–669. doi:10.1136/thoraxjnl-2018-211626                                                                 663
 State of the art review
Where are we now?                                                    major challenge, with regular treatment unaffordable for most
                                                                                                                                                     Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
A plethora of asthma management guidelines have been                 families.
published but healthcare providers rarely follow them, with little      In China, parents do not seem to recognise or understand the
change in use observed over time.63 64 It is unlikely that any one   concept of difficult-to-treat (refractory) asthma. In Japan, there
guideline can be applied globally and new ideas, rather than new     may be less concern about treatment adherence as regular doctor
guidelines, are needed to improve diagnosis and management.65        visits occur where repeat prescriptions are offered. Childhood
                                                                     asthma deaths have steadily fallen in Japan; although the death
Global overview                                                      rate in China is low, the disease prevalence has increased, partic-
Similar challenges exist worldwide, but there are region-specific    ularly in large cities.
differences. There is a general lack of effective primary care,
poor coordination between primary and secondary care, inac-          Australasia and Europe
curate diagnosis and poor adherence to treatment and failure         Here, the overall prevalence is high.71–73 Access to healthcare is
to effectively tackle those factors that can make asthma worse.      less problematic due to well-established healthcare systems and
There is a tendency to progress with the use of expensive medi-      subsidised medication costs. There are some remote sparsely
cines without first ensuring basic management approaches have        populated areas where access, and accuracy of diagnosis, may be
been optimised, that there has been a lack of recognition of         less reliable. Even where access is good, diagnosis can be wanting
asthma attacks and a failure of regional applicability together      and the overuse of reliever treatment, underuse of ICS and lack
with implementation of simplified treatment guidelines. Only         of planned follow-up are all evident.11 74
a few countries have been successful in the widespread imple-           Lung function assessment remains patchy, with little
mentation of national treatment guidelines. Shining examples of      agreement on its value despite information from long-term
these are the Finland Asthma Project,10 the 12-year to 15-year       studies.9 60 62 Even basic attention to patient inhaler technique
study in Costa Rica66 and the Belo Horizonte Project in Brazil.67    by UK prescribers, a number of years following clear recommen-
Lessons from these and other regional innovative incentives still    dations within national treatment guidelines, has been shown
need to be shared across the globe and we will incorporate these     to be lacking.48 Similarly, the use of markers of severity or
into our educational plan. In addition, the availability and cost    disease progression is poorly developed. Mortality is higher and
of medications and spacers in LMICs remain a huge barrier that       more could be done for those most vulnerable in society, who
could be overcome with directed resources, much in the way           are over-represented.75 Better coordination is needed among
vaccination rates have improved in this setting.68                   primary healthcare, hospitals, schools and child protection agen-
                                                                     cies.76 Greater patient engagement is needed, particularly during
Asthma by geographical region                                        the teenage years.
Asthma has been considered a disease of higher income countries,        There is a drive in the UK12 and Australia77 towards a better
but this view is now obsolete, with the prevalence rising faster     focus on phenotyping patients to improve the accuracy of diag-
in LMICs.14 To better understand the global context, a group         nosis and provide tailored treatment strategies. This is particu-
of respiratory paediatricians and healthcare professionals met in    larly pertinent in the non-atopic, obese adolescent.78
March 2017. Each was chosen for their in-depth knowledge of
childhood asthma within their world region. Information was          South America
shared on the similarities and differences between world regions     Asthma care here has many similarities with Asia and Africa.
and proposals developed as a basis for discussion.                   There is often poor access to care resulting in lack of control and
                                                                     increased asthma attacks, low accessibility to effective medica-
Africa                                                               tions, weak clinical infrastructures, poor patient compliance, lack
In Africa, like many LMICs, the burden of disease is high and        of effective education and difficult social and cultural factors.
outcomes are disproportionately worse among the poorest              Prescriptive international guidelines do not always fit into local
populations.14 69 Underdiagnosis and undertreatment with             social and cultural backgrounds in some countries. Albarran et
appropriate inhaled therapies prevail.14 69 There is a major lack    al suggested this could apply to the Global Initiative for Asthma
of resources, poor health system infrastructure, lack of inhaled     guideline recommendations in countries such as Venezuela.79
bronchodilators and corticosteroids and lack of knowledge of         The authors warned about too rigid an application of such
childhood asthma.14 69 This results in the widespread use of oral    recommendations.38 In contrast, the Wheezy Child Programme
bronchodilator therapy alone. The high incidence of tubercu-         in Belo Horizonte, Brazil, showed that expensive medications
losis, HIV and respiratory infections hinders the accurate diag-     are not necessary to achieve a good outcome, with the simple use
nosis of asthma.69 Poor access to care and the unavailability and    of regular ICS and intermittent short-acting β2-agonists (SABAs)
unaffordability of inhaled medications and spacers are chal-         highly effective in reducing hospital admissions and emergency
lenges.68 Outdoor pollution, exposure to secondary tobacco           room visits in young children with asthma from 1994 onwards.67
smoke, indoor air pollution or viral infections are highly preva-    Overdiagnosis in very young and underdiagnosis in older chil-
lent and all precipitate asthma attacks.70                           dren are continuing themes. There is no consistent intercountry
                                                                     agreement about step-down treatment. The disease burden is
Asia                                                                 high, multifactorial and mimics the financial and political vari-
In Asia, wide disparities in care are seen, reflecting the diver-    abilities seen in South American countries.80
sity of healthcare systems. Access to care differs widely between
China, Japan, the Indian subcontinent, Singapore and other           North America
Southeast Asian countries. Where access is more limited, early       Children up to 3 years old tend to be underdiagnosed, while
diagnosis is problematic and can result in years of inappropriate    patients aged 4–11 years are more likely to be overdiagnosed.
treatment or more likely no treatment at all. The cost of care       Access to therapy is strongly related to patient demographics.
in countries with less established healthcare systems remains a      Rural, low-income and Latino groups have limited access to
664                                                                     Lenney W, et al. Thorax 2018;73:662–669. doi:10.1136/thoraxjnl-2018-211626
                                                                                                               State of the art review
                                                                                Any asthma education plan in children needs to be age appro-
  Box 1 Main global challenges in paediatric asthma
                                                                                                                                                     Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
                                                                             priate. Several initiatives have been developed to improve
                                                                             knowledge and self-management. One of the first was the
  ►► Accurate diagnosis of asthma and its type (eg, eosinophilic vs          American AIR WISE Education Program, which consisted
      non-eosinophilic)                                                      of four weekly self-management sessions.85 It reduced the need
  ►► Accessing appropriate treatment                                         for emergency asthma treatments through better knowledge and
  ►► Improving adherence to treatment                                        changes in behaviour. Similarly, the USA-based Open Airways
  ►► Determining the key local environmental factors responsible             for Schools programme aims to educate and empower children
      for triggering symptoms                                                by taking a fun and interactive approach to asthma self-manage-
  ►► Stopping the escalation of treatment along guideline steps              ment.86 In Bermuda, the island-wide Open Airways programme
      without considering why the simple basics are not working              is a model of excellence using a range of techniques, including
  ►► Adapting global guidelines to local needs and implementing              annual assemblies and small group sessions.47 Improved adher-
      these in clinical practice                                             ence and control was also seen in those with persistent asthma
  ►► Culturally appropriate training and education in childhood              who participated in an internet-based monitoring and educa-
      asthma for all                                                         tion programme.87 Such new technology could provide addi-
                                                                             tional means of addressing treatment adherence using connected
                                                                             inhalers, which record patient usage.88 Several other educational
                                                                             initiatives hope to provide families with information needed
asthma specialists and conventional therapy. US drug prices                  to manage their asthma effectively. These include the Asthma
are very high, making it problematic for those with no medical               Initiative of Michigan89; the Centres for Disease Control and
insurance. High prices affect the willingness of health insurance            Prevention90; the American Academy of Allergy Asthma and
providers to reimburse for or allow the prescribing of high-cost             Immunology 91 and the School-based Asthma Management
medications. Individual healthcare systems play a major role in
                                                                             Program.92 The National Asthma Education and Prevention
the philosophy of treatment, but medications may be frequently
                                                                             Program (2003)93 provides schools with a guide to managing
switched based on formulary recommendations and costs,
                                                                             asthma among pupils.
confusing patients and probably affecting treatment adherence.
                                                                                What is lacking is a better coordinated approach. Lack of
Tracking of asthma hospitalisations is poor and lung function
                                                                             coordination with few well-funded initiatives in LMICs has high-
testing is limited. There is a need to improve identification of
                                                                             lighted the disparities in asthma education and resource alloca-
those at risk of attacks and to follow them up. Clinicians are
                                                                             tion. The Asthma Drug Facility provided a great step forward in
aware of guidelines but only relating to the treatment steps.37
                                                                             enabling access to affordable, good-quality, essential asthma drugs
   Key global challenges are summarised in box 1.
                                                                             in LMICs; however, this initiative is no longer operational, and
                                                                             there is a need to establish a similar global means of ensuring equi-
Where would we like to be?                                                   table access to high-quality, low-cost inhaled medication. A range
Improving the knowledge and understanding of asthma is                       of educational activities could be employed, including communi-
important and beneficial.81 82 The child and family should be at             ty-targeted activities. This could take the form of active learning
the centre of such plans, managed by well-informed local health-             modules, social media or community groups (asthma clubs and
care professionals and supported by regional services, including             church/school groups). Technology-based solutions, designed in
schools and town councils. The package we propose will be                    collaboration with children, could also prove successful. A toolbox
sensitive to local cultural attitudes as well as to the age of the           of best practice examples on how to improve asthma treatment is
child. The needs of young children and their families, and those             needed whereby local respiratory experts could provide region-
of teenagers, are clearly very different.83                                  ally targeted input and examples before local rollout. An approach
   The word ‘asthma’ carries a stigma in many countries around               using role models or ‘Asthma Champions’ to destigmatise asthma
the world, such as some South American countries, resulting in               could be particularly useful in many regions such as Africa, with
unwillingness to accept the diagnosis. In Nigeria, it is not only            delivery targeted via channels such as social media, short media
a stigma: parents believe it is an infectious disease, so take their         service (SMS) messages, radio, television or newspapers. We
child out of school when a diagnosis is made (personal commu-                could identify, for example, high-profile sports personalities with
nications, GF and CC). Such misconceptions can also lead to                  asthma who would be very strong leaders of this programme.
misdiagnosis and treatment with antibiotics.69 Teachers there-               Opinion-based publications proposing adaptation of international
fore need support and training in asthma within any educational              treatment guidelines to meet the local challenges could assist in
package.                                                                     tailoring treatment to meet the needs of the local population.
   Policy-makers must be provided with compelling evidence
to demonstrate the burden of the disease in both familial and
financial terms, to ensure that improvements reach beyond                    The Paediatric Asthma Project Plan
locally committed clinics.84 In LMICs, increased governmental                It can take 17 years for new medical practices to be adopted.94
understanding of the long-term socioeconomic burden caused                   The transfer of scientific knowledge into day-to-day clinical
by failure to diagnose asthma and lack of effective treatment                practice is complex and relies on a systems approach, knowledge
could result in changes in attitude about how future childhood               transfer and ultimately behavioural change. We therefore need
asthma will be addressed.14 It is important to stress that huge              a plan with a 10-year to 15-year vision for what the diagnosis
benefits can be obtained through simple, low-cost medicines                  and treatment of asthma in children should look like in future.
if distributed and used correctly. The basic bundle required is              We are aware that to succeed, it will be essential that all levels of
salbutamol and corticosteroid inhalers, oral prednisolone and a              government are enthused, engaged and involved. The plan must
plastic bottle converted into a spacer. LMIC governments do not              include the educational needs of the children, their families and
need to invest huge sums of money to make a big difference to                healthcare professionals; but also accessibility and affordability
asthma care.                                                                 of the medicines, particularly in LMICs.
Lenney W, et al. Thorax 2018;73:662–669. doi:10.1136/thoraxjnl-2018-211626                                                                    665
 State of the art review
                                                                                                                                                                  Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
Figure 1  This breaks down the comprehensive asthma training programme in Finland into five distinct segments. Following better understanding
of asthma knowledge, epidemiology and economics, there was recognition of a need for action, a better focus on patients and more effective use
of available resources. There then followed a focus on primary healthcare improvement, the development of tools to measure outcomes and the
devising of activities for diagnosis, treatment, better education and legislation.10  ICS, inhaled corticosteroid; GPs, general practitioners;  NGO, non-
governmental organisations.
   Educational interventions targeted at patients have shown                    reached 36    000 healthcare workers, ranging from national
limited improvements in health outcomes. Any programme                          medical specialists to healthcare workers in the municipalities.
would need clear patient-related outcome measures.95 Initiatives                In addition, the commitment of both political and regulatory
within the school setting may afford opportunities for the educa-               authorities was central to the sustainability of the initiative.
tion of children with and without asthma, together with teachers                Different plans will be needed for different regions. Clear defi-
and other staff members.90 96                                                   nitions for how to measure successful implementation of educa-
   We need to improve adherence to treatment and increase                       tional activities will need to be developed.98
correct inhaler use. This can build on the US schools initiative.                  We will develop comprehensive training templates from which
Health education needs to be strengthened through school-cen-                   countries and/or regions can select those most applicable to their
tred asthma programmes, but also within the community to                        locality to develop individualised training programmes ensuring
educate all local children about the management of this common                  continuous medical education of healthcare professionals. The
chronic disease. In addition, healthcare personnel need to be                   establishment of clinical educational hubs will enable healthcare
aware of the barriers to adherence at follow-up visits.97                       professionals to observe and participate in learning within a clin-
   We will learn from the initiatives and experiences of countries              ical setting. Teamwork and communication skills are important
where successes have already been achieved and aim to iden-                     components. In many countries, trained nurses or other health-
tify their critical success factors, including those in infectious              care personnel have been involved in asthma management in the
diseases such as tuberculosis and HIV.                                          primary care setting. They are frequently supported by a lead
   A 10-year National Asthma Programme was undertaken                           primary care practitioner, often with a specialist interest, but
in Finland between 1994 and 2004 to improve asthma care.                        the establishment of a team approach has been central to their
The programme’s success was achieved through earlier diag-                      success.
nosis, guided self-management, reduction of tobacco smoke                          Educational interventions often fail by not clarifying the
and better patient education.10 The key features are described                  learning context. Learning theorists99 100 suggest that adults learn
in figure 1.10 22 Central to their plan was the identification of               best when the topic is immediately relevant to them—through
primary care physicians as the key facilitators with the need                   experience, and when the learning is problem-centred. Central
for standardised education across the country. The programme                    to success is an awareness that the knowledge must be turned
666                                                                                  Lenney W, et al. Thorax 2018;73:662–669. doi:10.1136/thoraxjnl-2018-211626
                                                                                                                        State of the art review
Box 2 Guskey’s five steps of professional Box 3 Paediatric Asthma Project Plan—questions to
                                                                                                                                                                     Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
  development101                                                               be addressed
  1.	 Participants’ reactions: to measure initial satisfaction with            ►► Can specific biomarkers identify children most at risk and in
        the process                                                                need of specific treatment strategies?
  2.	   Participants’ learning: to evaluate new skills and knowledge           ►► How best can we address poor treatment adherence?
  3.	   Organisation support and change: the organisation’s                    ►► Can guidelines be simplified for practical use in the primary
        advocacy, support and so on are assessed                                   care setting?
  4.	   Participant use of new knowledge and skills: degree and                ►► What community strategies need addressing at a global
        quality of implementation are measured                                     level?
  5.	   Student learning outcomes: assess student progress                     ►► What are the specific needs for low and middle-income
                                                                                   countries?
                                                                               ►► Do we really understand the disease burden at a global
                                                                                   level?
into a change in clinical practice. We will apply Guskey’s five                ►► Can we promote the global re-establishment of an asthma
steps of professional development to encourage this (box 2).101                    drug facility to enable widely accessible and affordable high-
We will also collaborate with international education groups                       quality asthma medications?
to improve global training and education using a face-to-face
‘Teach the Teacher’ programme in various parts of the world.
This would be a three-stage process drawing on the experience                considering the child’s ability to take medications and determine
of successful programmes in other fields. The strategy will be: (1)          their optimal inhaler technique. By simplifying and standardising
establish an expert faculty with experienced teachers of primary             these, it might be possible to achieve better outcomes. Can we
care; (2) invite countries to participate with a group of ‘master            give clearer advice about step-down therapy? There are huge
teachers’ providing the opportunity to learn about design and                disparities in global views on many of these topics, leading to
implement an educational programme in their country and (3)                  confusion and an inability to compare outcomes from different
roll out the educational programme in their respective countries.            world regions.
                                                                                                                                                                                                 Thorax: first published as 10.1136/thoraxjnl-2018-211626 on 14 May 2018. Downloaded from http://thorax.bmj.com/ on 10 December 2018 by guest. Protected by copyright.
Breathing Institute, Children’s Hospital Colorado, Aurora, Colorado, USA                            adolescent asthma: the Room to Breathe survey. Eur Respir J 2012;39:90–6.
13
  Department of Pediatrics, University of Colorado School of Medicine, Aurora,                	 14	 Global Asthma Network. The global asthma report. 2014 http://www.
Colorado, USA                                                                                       globalasthmareport.org/resources/G     lobal_Asthma_Report_2014.pdf (accessed 1 Jan
14
  Department of Paediatrics and Child Health, Red Cross War Memorial Children’s                     2018).
Hospital, Cape Town, South Africa                                                             	 15	 Agustí A, Bafadhel M, Beasley R, et al. Precision medicine in airway diseases: moving
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  MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town,                        to clinical practice. Eur Respir J 2017;50:1701655.
South Africa                                                                                  	 16	 Noutsios GT, Floros J. Childhood asthma: causes, risks, and protective factors; a role
                                                                                                    of innate immunity. Swiss Med Wkly 2014;144:w14036.
Acknowledgements  Professor Gilberto Fischer (GlaxoSmithKline (GSK), Brazil),                 	 17	 Subbarao P, Mandhane PJ, Sears MR. Asthma: epidemiology, etiology and risk
Professor Jian-guo Hing (GSK, China) and Professor Yuichi Adachi (GSK, Japan) were                  factors. Can Med Assoc J 2009;181:E181–E190.
key members of the Paediatric Advisory Board who presented their overviews on the             	 18	 Wang F, He XY, Baines KJ, et al. Different inflammatory phenotypes in adults and
state of diagnosis and management of paediatric asthma from their world regions                     children with acute asthma. Eur Respir J 2011;38:567–74.
and subsequently provided further information to help develop the consensus                   	 19	 Hedlin G, Konradsen J, Bush A. An update on paediatric asthma. Eur Respir Rev
paper. They continue to be fully involved with the ongoing project. Medical writing                 2012;21:175–85.
support in the form of development of the first draft in consultation with the authors,       	 20	 Simpson A, Tan VY, Winn J, et al. Beyond atopy: multiple patterns of sensitization
assembling tables and figures, copyediting, referencing and graphic services was                    in relation to asthma in a birth cohort study. Am J Respir Crit Care Med
provided by Catherine Amey of Gardiner-Caldwell Communications, Macclesfield,                       2010;181:1200–6.
UK, and was funded by GSK.                                                                    	 21	 Stoltz DJ, Jackson DJ, Evans MD, et al. Specific patterns of allergic sensitization
                                                                                                    in early childhood and asthma & rhinitis risk. Clinical & Experimental Allergy
Contributors  Drafting/revising: all authors. Final approval or publication: all                    2013;43:233–41.
authors. Agreement to be accountable for all aspects (accuracy/integrity): all authors.       	 22	 Szefler SJ, Holguin F, Wechsler M. Personalized medicine for asthma for the for the
Funding  This study was funded by GlaxoSmithKline.                                                  clinician. St Louis, MO: Elsevier, 2018.
                                                                                              	 23	 American Lung Association. Asthma risk factors. 2017 http://www.lung.org/lung-
Competing interests  WL is a GlaxoSmithKline (GSK) employee and GSK                                 health-and-diseases/l ung-disease-lookup/asthma/asthma-symptoms-causes-risk-
shareholder. AB has nothing to disclose. DAF has consulted for GSK and Merck,                       factors/asthma-risk-f actors.html (accessed 11 Jan 2018).
Sharp & Dohme. MF is a GSK employee and GSK shareholder. AO has consulted for                 	 24	 Oberg M, Jaakkola MS, Woodward A, et al. Worldwide burden of disease from
GSK and Boehringer Ingelheim. SP reports personal fees from AstraZeneca, personal                   exposure to second-hand smoke: a retrospective analysis of data from 192 countries.
fees from Chiesi and personal fees from ALK, outside the submitted work. SJS has                    Lancet 2011;377:139–46.
consulted for Aerocrine, AstraZeneca, Boehringer Ingelheim, Daiichi Sankyo, GSK,              	 25	 Faber T, Kumar A, Mackenbach JP, et al. Effect of tobacco control policies on
Genentech, Merck, Novartis, Roche and Teva and has received research support                        perinatal and child health: a systematic review and meta-analysis. Lancet Public
from the National Institutes of Health, the National Heart, Lung and Blood Institute,               Health 2017;2:e420–e437.
the National Institute for Allergy and Infectious Diseases, the National Institute            	 26	 Mackay D, Haw S, Ayres JG, et al. Smoke-free legislation and hospitalizations for
of Environmental and Health Sciences, the Environmental Protection Agency, the                      childhood asthma. N Engl J Med Overseas Ed 2010;363:1139–45.
Colorado Cancer, Cardiovascular and Pulmonary Disease Program and GSK. HJZ                    	 27	 Martinez FD, Wright AL, Taussig LM, et al. Asthma and wheezing in the
reports grants from Allergy Society of South Africa, grants from South Africa Medical               first six years of life. The Group Health Medical Associates. N Engl J Med
Research Council and other from GSK, outside the submitted work.                                    1995;332:133–8.
Patient consent  Not required.                                                                	 28	 van Aalderen WM. Childhood asthma: diagnosis and treatment. Scientifica
                                                                                                    2012;2012:674204:1–18.
Provenance and peer review  Not commissioned; externally peer reviewed.
                                                                                              	 29	 Jat KR, Kabra SK. Wheezing in children with viral infection & its long-term effects.
Open access  This is an open access article distributed in accordance with the                      Indian J Med Res 2017;145:161–2.
Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which                     	 30	 Paton J, Bindels P, McMurray A, et al. A young child with a history of wheeze. NPJ
permits others to distribute, remix, adapt, build upon this work non-commercially,                  Prim Care Respir Med 2017;27:19.
and license their derivative works on different terms, provided the original work             	 31	 de Sousa RB, Medeiros D, Sarinho E, et al. Risk factors for recurrent wheezing in
is properly cited and the use is non-commercial. See: http://creativecommons.org/                infants: a case-control study. Rev Saude Publica 2016;50:15.
licenses/by-nc/4.0/                                                                       	 32	 Cave AJ, Atkinson LL. Asthma in preschool children: a review of the diagnostic
© Article author(s) (or their employer(s) unless otherwise stated in the text of the                challenges. J Am Board Fam Med 2014;27:538–48.
article) 2018. All rights reserved. No commercial use is permitted unless otherwise           	 33	 Busi LE, Restuccia S, Tourres R, et al. Assessing bronchodilator response in preschool
expressly granted.                                                                                  children using spirometry. Thorax 2017;72:367–72.
                                                                                              	 34	 Pedersen SE, Hurd SS, Lemanske RF, et al. Global strategy for the diagnosis
                                                                                                    and management of asthma in children 5 years and younger. Pediatr Pulmonol
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