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Utility of auscultatory screening for detecting rheumatic heart disease in high-risk children in Australia's Northern Territory

Roberts, Kathryn V., Brown, Alex, Maguire, Graeme P., Atkinson, David N. and Carapetis, Jonathan R. (2013). Utility of auscultatory screening for detecting rheumatic heart disease in high-risk children in Australia's Northern Territory. Medical Journal of Australia,199(3):196-199.

Document type: Journal Article
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IRMA ID cmartelxPUB109
Title Utility of auscultatory screening for detecting rheumatic heart disease in high-risk children in Australia's Northern Territory
Author Roberts, Kathryn V.
Brown, Alex
Maguire, Graeme P.
Atkinson, David N.
Carapetis, Jonathan R.
Journal Name Medical Journal of Australia
Publication Date 2013
Volume Number 199
Issue Number 3
Scopus ID 2-s2.0-84881273114
Start Page 196
End Page 199
Total Pages 4
Place of Publication Australia
Publisher Australasian Medical Publishing Company
HERDC Category C1 - Journal Article (DIISR)
Abstract Objectives:
To evaluate the utility of auscultatory screening for detecting echocardiographically confirmed rheumatic heart disease (RHD) in high-risk children in the Northern Territory, Australia.


Cross-sectional screening survey.


Twelve rural and remote communities in the NT between September 2008 and June 2010.


1015 predominantly Indigenous schoolchildren aged 5–15 years.


All children underwent transthoracic echocardiography, using a portable cardiovascular ultrasound machine, and cardiac auscultation by a doctor and a nurse. Sonographers and auscultators were blinded to each others’ findings and the clinical history of the children. Echocardiograms were reported offsite, using a standardised protocol, by cardiologists who were also blinded to the clinical findings.

Main outcome measures
Presence of a cardiac murmur as identified by nurses (any murmur) and doctors (any murmur, and “suspicious” or “pathological” murmurs), compared with echocardiogram findings. RHD was defined according to the 2012 World Heart Federation criteria for echocardiographic diagnosis of RHD.

Of the 1015 children screened, 34 (3.3%) had abnormalities identified on their echocardiogram; 24 met echocardiographic criteria for definite or borderline RHD, and 10 had isolated congenital anomalies. Detection of any murmur by a nurse had a sensitivity of 47.1%, specificity of 74.8% and positive predictive value (PPV) of 6.1%. Doctor identification of any murmur had 38.2% sensitivity, 75.1% specificity and 5.1% PPV, and the corresponding values for doctor detection of suspicious or pathological murmurs were 20.6%, 92.2% and 8.3%. For all auscultation approaches, negative predictive value was more than 97%, but the majority of participants with cardiac abnormalities were not identified. The results were no different when only definite RHD and congenital abnormalities were considered as true cases.

Sensitivity and positive predictive value of cardiac auscultation compared with echocardiography is poor, regardless of the expertise of the auscultator. Although negative predictive value is high, most cases of heart disease were missed by auscultation, suggesting that cardiac auscultation should no longer be used to screen for RHD in high-risk schoolchildren in Australia.

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