Percutaneous balloon mitral commissurotomy in indigenous versus non-indigenous Australians

Public Health Costs for Northern Territory and South Australian Cardiac Surgery Patients

BACKGROUND

The cost of performing cardiac surgery in the public health system in Australia is unclear. This paper analyses the cost of cardiac surgery performed at Flinders Medical Centre (FMC), South Australia, comparing cost by procedure, rheumatic valvular heart disease status, Aboriginality and location.

METHODS

This study is a retrospective, population-based analysis of cardiac surgery data held in the Cardiac Surgery Registry cross-referenced to cost data provided by the FMC Department of Finance and Patient Travel, Accommodation and Transport Services at the Royal Darwin Hospital. Seven hundred ninety-five (795) patients who underwent cardiac surgery at FMC from 1 July 2014 to 30 June 2016 were included.

RESULTS

Across all procedures, Northern Territory (NT) Aboriginal patients had a mean total cost of $78,506 which was $24,113 more than NT non-Aboriginal, $28,443 more than South Australian (SA) Aboriginal and $22,955 more than SA non-Aboriginal patients. The total cost of a patient undergoing a repeat sternotomy (reoperative procedure) was found to be significantly higher than a primary procedure ($85,797 versus $59,097). In patients undergoing valve surgery procedures, those identified with rheumatic heart disease had a higher mean total cost than those without (a difference of $25,094). Significantly, the rheumatic patient group showed a higher proportion of reoperative procedures (19% versus 5%).

CONCLUSIONS

The cost of treating NT Aboriginal cardiac surgical patients remotely has a significant financial impact upon the health care delivery system, as does the impact of rheumatic heart disease. This study found that the cost for the NT Aboriginal patient group was substantially higher than the NT non-Aboriginal, SA Aboriginal and SA non-Aboriginal patient groups. The additional cost to family and dislocation of social structures is not able to be calculated, but would also clearly weigh heavily on both patient groups. These findings suggest that future health funding models should recognise Aboriginality, remoteness and rheumatic heart disease.

Atrial fibrillation in the Indigenous populations of Australia, Canada, New Zealand, and the United States: a systematic scoping review

Background

The epidemiology of atrial fibrillation (AF) among Indigenous minorities in affluent countries is poorly delineated, despite the high cardiovascular disease burden in these populations. We undertook a systematic scoping review examining the epidemiology of AF in the Indigenous populations of Australia, Canada, New Zealand (NZ) and the United States (US).

Methods

PubMed, Scopus, EMBASE and CINAHL-Plus databases were systematically searched in May 2014. Supplementary full-text searches of Google Scholar and government website searches were also undertaken.

Results

Key findings from 27 publications with diverse aims and methods were included. Small studies from Canada and NZ suggest higher AF prevalence in Indigenous than other populations. However, this was not reflected in a large sample of US male military veterans. No data were identified on community-based incidence rates of AF in Indigenous populations. Australian and Canadian studies indicate higher first-ever and overall AF hospitalisation rates among Indigenous than other populations, at younger ages and with more comorbidity. Studies in stroke, heart failure and other clinical groups demonstrate AF as a common comorbidity, with AF possibly more prevalent at younger ages in Indigenous people. Indigenous patients have similar early post-hospitalisation adjusted mortality but higher 1-year risk-adjusted mortality than non-Indigenous patients.

Conclusions

No clear epidemiological pattern of AF frequency across the considered Indigenous populations emerges from the limited available evidence. AF should be included in key conditions reported in national surveillance reports, although Indigenous identifiers are required in administrative data from Canada and the US. Sufficiently powered, community-based studies of AF epidemiology in diverse Indigenous populations are needed.

Electronic supplementary material

The online version of this article (doi:10.1186/s12872-015-0081-6) contains supplementary material, which is available to authorized users.