Every which way you look at renal disease in Aboriginal people, the only solutions that will work in the long term are those that are Aboriginal-led, culturally responsive, located in Aboriginal organisations and evaluated through an Aboriginal lens.
Pat Turner CEO, National Aboriginal Community Controlled Health Organisations11
Immunisation
There are no immunisations for the causative agents in UTIs or skin infections. This also includes no vaccines for Group A streptococcus, which causes APSGN and rheumatic heart disease.
Screening
Observational study data suggest the prevention and treatment of skin infection prevent APSGN, so children with skin sores, and their household contacts, should be given targeted treatment with antiscabies medication and benzathine penicillin.36 However, population-level recommendations for children in communities with a high prevalence of skin conditions are less clear. Regular community-based programs may be useful to screen and treat all children in a target age group (eg ages 0–3 years) for both scabies and infected sores.19 Simultaneous treatment of the whole community to remove scabies (a common precursor to streptococcal skin infection), followed by regular ongoing surveillance and treatment of scabies and skin sores (at least three times per year), may prevent streptococcal skin infections.19 Community-wide treatment requires consultation and agreement between the community, health service and public health unit. These interventions reduce skin sores, scabies and APSGN,19,36,37 and it would be reasonable to assume this could reduce CKD, but data are lacking. A small study with low response rates from six remote Aboriginal communities across the NT found a willingness to adopt the No Germs On Me television health promotion recommendations, but only if the cost barriers were addressed.38 The findings are interesting, but studies are needed that directly examine health outcomes and are designed and delivered within each community.38
Single estimations of urinary blood and protein in children vary according to posture, illness, exercise and time of day. Screening urinalysis is costly to the community, may result in physical and psychological costs to the patients and their families and is prone to misinterpretation. Therefore, population-level urinalysis screening is not recommended for children.12
Similarly, there is no high-quality evidence to recommend routine blood pressure screening of Aboriginal children specifically to prevent CKD. However, blood pressure measurement is often part of a general health check and, if done, there are published gender-, age- and height-specific normal values for systolic blood pressure among children in the US (see Useful resources). Given the high rates of CKD and high rates of hypertension among Aboriginal children from urban settings in Australia, particularly when their parents had hypertension,39 family-based health promotion strategies are likely to be beneficial. Examples of such programs for child health outcomes generally, rather than specifically for kidney disease, include the Strong Mother Strong Baby programs and Aboriginal and Torres Strait Islander home visiting programs.40 Although kidney outcomes were not measured and evidence quality was low/moderate, a recent systematic review found family-centred primary care interventions had various benefits for Aboriginal and Torres Strait Islander children, including increased birthweights, reduced obesity, improved home safety and increased immunisation and primary screening rates.40
Behavioural
The CARI guidelines currently recommend screening for ‘red flags’ of CKD among children and young people aged <18 years.1 These red flags include:
- family history of CKD
- clinical history of diabetes
- hypertension
- obesity
- smoking
- cardiovascular disease
- acute kidney injury
- past history of low birth weight
- recurrent childhood infections.
This could be most children in some communities. The recommendation is also to consider socioeconomic and housing status, education level and setting (remote, regional or urban) and to undertake a kidney health check (blood pressure, eGFR and urine albumin to creatinine ratio) if concerned. Although the lack of evidence meant the certainty was very low, it would be reasonable to include these elements in any history taking during health checks and address modifiable determinants among the other health and social priorities for the family.
Medications, probiotics and surgery
There are no data to support the use of renin–angiotensin–aldosterone inhibitors in the primary care setting to prevent CKD.
There is lack of certainty regarding the usefulness of routine antibiotic prophylaxis following the first UTI. A large double-blind placebo-controlled trial found a modest 6% reduction in febrile UTI after one year of prophylactic daily co-trimoxazole and that children with vesicoureteric reflux (VUR) were no more likely to benefit from prophylactic antibiotics than those without VUR.41 Guidelines from CARI, the National Institute for Health and Care Excellence in the UK (NICE) and the American Academy of Paediatrics currently do not recommend using prophylactic antibiotics after the first UTI.17,18,22 Prophylactic antibiotics remain an option for recurrent and complicated UTI. Asymptomatic bacteriuria in infants and children should not be treated with prophylactic antibiotics.17,18,22
There is no current evidence to support the use of cranberry juice22,23 or probiotics to prevent UTIs.42 Circumcision reduces the risk of UTI in boys,43 but is associated with some risk and so is not recommended routinely to prevent UTIs.17 CARI guidelines recommend circumcision in boys with recurrent UTI or high-grade VUR (Grade 2C).17 CARI guidelines do not recommend surgical correction of VUR to prevent UTI.17
Environmental
There is evidence inadequate housing facilities and overcrowding enhance the risk of skin, ear, respiratory and gastrointestinal infections among Aboriginal children.8,9 The NSW Housing for Health program was a collaborative effort between Aboriginal community groups, land councils and NSW Health to upgrade essential housing needs for healthy living. People who received assistance from the Housing for Health program had a 38% reduction in hospitalisations for infections (skin, gut, respiratory and otitis media) in 2008 compared with 1998, whereas there was a 3% increase over the same time period for people with no Housing for Health assistance.10 A study from Bangladesh found that poor-quality housing and a lack of electricity were associated with scabies.44 A reduction in the prevalence of skin sores in Aboriginal children has been reported in several pre–post studies as a beneficial effect of swimming pools and may be due to cleaning of the skin.20 Although these are infection-related outcomes, it is likely improvements in water, sanitation, housing and overcrowding would also lead to improved kidney health outcomes. A qualitative examination in a remote setting found Aboriginal community members were aware of the link between hygiene, infections and later kidney disease,45 but formal evaluations of interventions were lacking.
Community-based programs
CARI guidelines do not currently recommend specific screening for children to prevent CKD, but they do recommend early detection with adult CKD screening programs for Aboriginal and Torres Strait Islander people that are community controlled, co-designed with the community, and use an integrated multidisciplinary approach.1