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Rheumatic heart disease (RHD) is underdiagnosed globally resulting in missed treatment opportunities and adverse clinical outcomes. We describe the protocol for a study which aims to co-design, implement and conduct an evaluation of a task-sharing approach to echocardiographic active case finding for early detection and management of RHD in high-risk settings in Australia and Timor-Leste.
This study aimed to investigate potential missed diagnoses of acute rheumatic fever and rheumatic heart disease during hospital-based care among persons subsequently identified with these conditions.
Jonathan Carapetis AM AM MBBS FRACP FAFPHM PhD FAHMS Executive Director; Co-Head, Strep A Translation; Co-Founder of REACH 08 6319 1000 contact@
The spectrum of diseases caused by Streptococcus pyogenes (Strep A) ranges from superficial to serious life-threatening invasive infections. We conducted a scoping review of published articles between 1980 and 2021 to synthesize evidence of state transitions across the Strep A disease spectrum. We identified 175 articles reporting 262 distinct observations of Strep A disease state transitions.
Acute rheumatic fever (ARF), a serious inflammatory condition, often leads to rheumatic heart disease. Between 2011 and 2016, Aotearoa New Zealand implemented a rheumatic fever prevention programme to reduce high rates of ARF through improved community access to timely diagnosis and early treatment of group A streptococcal pharyngitis, which has been shown to prevent subsequent ARF.
Acute rheumatic fever and rheumatic heart disease disproportionately affect Aboriginal and Torres Strait Islander people in Australia, with devastating impacts on morbidity, mortality and community wellbeing. Research suggests that general practitioners and primary care staff perceive insurmountable barriers to improving clinical outcomes, including the need for systemic change outside their scope of practice.
Regular intramuscular benzathine penicillin G injections have been the cornerstone of rheumatic heart disease (RHD) secondary prophylaxis since the 1950s. As the pharmacological correlate of protection remains unknown, it is difficult to recommend changes to this established regimen. Determining the minimum effective penicillin exposure required to prevent Streptococcus pyogenes infection will accelerate development of new long-acting penicillins for RHD prevention as well as inform opportunities to improve existing regimens. The CHIPS trial will address this knowledge gap by directly testing protection afforded by different steady state plasma concentrations of penicillin in an established model of experimental human S. pyogenes pharyngitis.
The impact of mitral regurgitation from pediatric rheumatic heart disease and its effect on left ventricular remodeling and function following surgical intervention is uncertain. The objective is to explore the impact of mitral valve surgeries on myocardial mechanics, remodeling and function and identify pre-operative predictors of post-operative dysfunction which may contribute to the optimal timing of intervention.
The Strep A Translation team aim to understand the epidemiology of Strep A infections in Australia and the world. Alongside this, they explore the implementation of endgame recommendations, health economics and new horizons.
Honorary