Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children

<p>Abstract</p> <p>Background</p> <p>In Australia, rheumatic heart disease (RHD) is almost exclusively restricted to Aboriginal Australian and Torres Strait Islander people with children being at highest risk. International criteria for echocardiographic diagnosis of RH...

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Main Authors: Rémond Marc Gerard Wootton, Atkinson David, White Andrew, Hodder Yvonne, Brown Alex DH, Carapetis Jonathan R, Maguire Graeme Paul
Format: Article
Language:English
Published: BMC 2012-11-01
Series:BMC Cardiovascular Disorders
Subjects:
Online Access:http://www.biomedcentral.com/1471-2261/12/111
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author Rémond Marc Gerard Wootton
Atkinson David
White Andrew
Hodder Yvonne
Brown Alex DH
Carapetis Jonathan R
Maguire Graeme Paul
author_facet Rémond Marc Gerard Wootton
Atkinson David
White Andrew
Hodder Yvonne
Brown Alex DH
Carapetis Jonathan R
Maguire Graeme Paul
author_sort Rémond Marc Gerard Wootton
collection DOAJ
description <p>Abstract</p> <p>Background</p> <p>In Australia, rheumatic heart disease (RHD) is almost exclusively restricted to Aboriginal Australian and Torres Strait Islander people with children being at highest risk. International criteria for echocardiographic diagnosis of RHD have been developed but the significance of minor heart valve abnormalities which do not reach these criteria remains unclear. The Rheumatic Fever Follow-Up Study (RhFFUS) aims to clarify this question in children and adolescents at high risk of RHD.</p> <p>Methods/design</p> <p>RhFFUS is a cohort study of Aboriginal and/or Torres Strait Islander children and adolescents aged 8–17 years residing in 32 remote Australian communities. Cases are people with non-specific heart valve abnormalities detected on prior screening echocardiography. Controls (two per case) are age, gender, community and ethnicity-matched to cases and had a prior normal screening echocardiogram. Participants will have echocardiography about 3 years after initial screening echocardiogram and enhanced surveillance for any history suggestive of acute rheumatic fever (ARF). It will then be determined if cases are at higher risk of (1) ARF or (2) developing progressive echocardiography-detected valve changes consistent with RHD.</p> <p>The occurrence and timing of episodes of ARF will be assessed retrospectively for 5 years from the time of the RhFFUS echocardiogram. Episodes of ARF will be identified through regional surveillance and notification databases, carer/subject interviews, primary healthcare history reviews, and hospital separation diagnoses.</p> <p>Progression of valvular abnormalities will be assessed prospectively using transthoracic echocardiography and standardized operating and reporting procedures. Progression of valve lesions will be determined by specialist cardiologist readers who will assess the initial screening and subsequent RhFFUS screening echocardiogram for each participant. The readers will be blinded to the initial assessment and temporal order of the two echocardiograms.</p> <p>Discussion</p> <p>RhFFUS will determine if subtle changes on echocardiography represent the earliest changes of RHD or mere variations of normal heart anatomy. In turn it will inform criteria to be used in determining whether secondary antibiotic prophylaxis should be utilized in individuals with no clear history of ARF and minor abnormalities on echocardiography. RhFFUS will also inform the ongoing debate regarding the potential role of screening echocardiography for the detection of RHD in this setting.</p>
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spelling doaj.art-dfa307a88ee1434da9063d70156055212022-12-21T20:55:55ZengBMCBMC Cardiovascular Disorders1471-22612012-11-0112111110.1186/1471-2261-12-111Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander childrenRémond Marc Gerard WoottonAtkinson DavidWhite AndrewHodder YvonneBrown Alex DHCarapetis Jonathan RMaguire Graeme Paul<p>Abstract</p> <p>Background</p> <p>In Australia, rheumatic heart disease (RHD) is almost exclusively restricted to Aboriginal Australian and Torres Strait Islander people with children being at highest risk. International criteria for echocardiographic diagnosis of RHD have been developed but the significance of minor heart valve abnormalities which do not reach these criteria remains unclear. The Rheumatic Fever Follow-Up Study (RhFFUS) aims to clarify this question in children and adolescents at high risk of RHD.</p> <p>Methods/design</p> <p>RhFFUS is a cohort study of Aboriginal and/or Torres Strait Islander children and adolescents aged 8–17 years residing in 32 remote Australian communities. Cases are people with non-specific heart valve abnormalities detected on prior screening echocardiography. Controls (two per case) are age, gender, community and ethnicity-matched to cases and had a prior normal screening echocardiogram. Participants will have echocardiography about 3 years after initial screening echocardiogram and enhanced surveillance for any history suggestive of acute rheumatic fever (ARF). It will then be determined if cases are at higher risk of (1) ARF or (2) developing progressive echocardiography-detected valve changes consistent with RHD.</p> <p>The occurrence and timing of episodes of ARF will be assessed retrospectively for 5 years from the time of the RhFFUS echocardiogram. Episodes of ARF will be identified through regional surveillance and notification databases, carer/subject interviews, primary healthcare history reviews, and hospital separation diagnoses.</p> <p>Progression of valvular abnormalities will be assessed prospectively using transthoracic echocardiography and standardized operating and reporting procedures. Progression of valve lesions will be determined by specialist cardiologist readers who will assess the initial screening and subsequent RhFFUS screening echocardiogram for each participant. The readers will be blinded to the initial assessment and temporal order of the two echocardiograms.</p> <p>Discussion</p> <p>RhFFUS will determine if subtle changes on echocardiography represent the earliest changes of RHD or mere variations of normal heart anatomy. In turn it will inform criteria to be used in determining whether secondary antibiotic prophylaxis should be utilized in individuals with no clear history of ARF and minor abnormalities on echocardiography. RhFFUS will also inform the ongoing debate regarding the potential role of screening echocardiography for the detection of RHD in this setting.</p>http://www.biomedcentral.com/1471-2261/12/111Rheumatic heart diseaseAcute rheumatic feverScreeningAboriginalTorres Strait IslanderIndigenousDiagnosisPreventionAustraliaEchocardiography
spellingShingle Rémond Marc Gerard Wootton
Atkinson David
White Andrew
Hodder Yvonne
Brown Alex DH
Carapetis Jonathan R
Maguire Graeme Paul
Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children
BMC Cardiovascular Disorders
Rheumatic heart disease
Acute rheumatic fever
Screening
Aboriginal
Torres Strait Islander
Indigenous
Diagnosis
Prevention
Australia
Echocardiography
title Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children
title_full Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children
title_fullStr Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children
title_full_unstemmed Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children
title_short Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children
title_sort rheumatic fever follow up study rhffus protocol a cohort study investigating the significance of minor echocardiographic abnormalities in aboriginal australian and torres strait islander children
topic Rheumatic heart disease
Acute rheumatic fever
Screening
Aboriginal
Torres Strait Islander
Indigenous
Diagnosis
Prevention
Australia
Echocardiography
url http://www.biomedcentral.com/1471-2261/12/111
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