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1.
PLoS Negl Trop Dis ; 18(5): e0012115, 2024 May.
Article in English | MEDLINE | ID: mdl-38696362

ABSTRACT

Rheumatic heart disease (RHD) and acute rheumatic fever (ARF) disproportionately affect individuals in low-resource settings. ARF is attributed to an immune response to Group A Streptococcus (GAS) following GAS pharyngitis and potentially GAS impetigo in which infection can be initiated by scabies infestation. The burden of ARF and RHD in Aboriginal and Torres Strait Islander people in Australia is among the highest globally. Following recent calls to include dog management programs in ARF and RHD prevention programs, we believe it is timely to assess the evidence for this, particularly since previous recommendations excluded resources to prevent zoonotic canine scabies. While phylogenetic analyses have suggested that the Sarcoptes mite is host specific, they have differed in interpretation of the strength of their findings regarding species cross-over and the need for canine scabies control to prevent human itch. Given that there is also indication from case reports that canine scabies leads to human itch, we propose that further investigation of the potential burden of zoonotic canine scabies and intervention trials of canine scabies prevention on the incidence of impetigo are warranted. Considering the devastating impacts of ARF and RHD, evidence is required to support policy to eliminate all risk factors.


Subject(s)
Dog Diseases , Rheumatic Heart Disease , Scabies , Animals , Scabies/veterinary , Scabies/prevention & control , Scabies/epidemiology , Dogs , Humans , Dog Diseases/prevention & control , Dog Diseases/parasitology , Dog Diseases/epidemiology , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/epidemiology , Australia/epidemiology , Zoonoses/prevention & control , Impetigo/microbiology , Impetigo/prevention & control , Streptococcus pyogenes , Streptococcal Infections/veterinary , Streptococcal Infections/prevention & control , Streptococcal Infections/epidemiology , Streptococcal Infections/microbiology , Risk Factors , Rheumatic Fever/prevention & control
2.
PLoS One ; 19(5): e0302493, 2024.
Article in English | MEDLINE | ID: mdl-38743745

ABSTRACT

BACKGROUND: Four-weekly intramuscular (IM) benzathine penicillin G (BPG) injections to prevent acute rheumatic fever (ARF) progression have remained unchanged since 1955. A Phase-I trial in healthy volunteers demonstrated the safety and tolerability of high-dose subcutaneous infusions of BPG which resulted in a much longer effective penicillin exposure, and fewer injections. Here we describe the experiences of young people living with ARF participating in a Phase-II trial of SubCutaneous Injections of BPG (SCIP). METHODOLOGY: Participants (n = 20) attended a clinic in Wellington, New Zealand (NZ). After a physical examination, participants received 2% lignocaine followed by 13.8mL to 20.7mL of BPG (Bicillin-LA®; determined by weight), into the abdominal subcutaneous tissue. A Kaupapa Maori consistent methodology was used to explore experiences of SCIP, through semi-structured interviews and observations taken during/after the injection, and on days 28 and 70. All interviews were recorded, transcribed verbatim, and thematically analysed. PRINCIPAL FINDINGS: Low levels of pain were reported on needle insertion, during and following the injection. Some participants experienced discomfort and bruising on days one and two post dose; however, the pain was reported to be less severe than their usual IM BPG. Participants were 'relieved' to only need injections quarterly and the majority (95%) reported a preference for SCIP over IM BPG. CONCLUSIONS: Participants preferred SCIP over their usual regimen, reporting less pain and a preference for the longer time gap between treatments. Recommending SCIP as standard of care for most patients needing long-term prophylaxis has the potential to transform secondary prophylaxis of ARF/RHD in NZ and globally.


Subject(s)
Penicillin G Benzathine , Rheumatic Heart Disease , Humans , Penicillin G Benzathine/administration & dosage , Penicillin G Benzathine/therapeutic use , Male , Female , New Zealand , Injections, Subcutaneous , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/drug therapy , Adult , Adolescent , Young Adult , Pain/drug therapy , Pain/prevention & control , Qualitative Research , Rheumatic Fever/prevention & control , Rheumatic Fever/drug therapy , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/therapeutic use
3.
J Am Heart Assoc ; 13(5): e032442, 2024 Mar 05.
Article in English | MEDLINE | ID: mdl-38390809

ABSTRACT

BACKGROUND: Rheumatic heart disease (RHD) is a devastating yet preventable condition that disproportionately affects low-middle-income countries and indigenous populations in some high-income countries. Various preventive interventions have been implemented across the globe, but evidence for the effectiveness of these measures in reducing the incidence or prevalence of acute rheumatic fever and RHD is scattered. This systematic review aims to assess the effectiveness of preventive interventions and identify the strategies used to reduce the burden of RHD. METHODS AND RESULTS: A comprehensive search was conducted to identify relevant studies on RHD prevention interventions including interventions for primordial, primary, and secondary prevention. Effectiveness measures for the interventions were gathered when available. The findings indicate that school-based primary prevention services targeting the early detection and treatment of Group A Streptococcus pharyngitis infection with penicillin have the potential to reduce the incidence of Group A Streptococcus pharyngitis and acute rheumatic fever. Community-based programs using various prevention strategies also reduced the burden of RHD. However, there is limited evidence from low-middle-income countries and a lack of rigorous evaluations reporting the true impact of the interventions. Narrative synthesis was performed, and the methodological quality appraisal was done using the Joanna Briggs Institute critical appraisal tools. CONCLUSIONS: This systematic review underscores the importance of various preventive interventions in reducing the incidence and burden of Group A Streptococcus pharyngitis, acute rheumatic fever, and RHD. Rigorous evaluations and comprehensive analyses of interventions are necessary for guiding effective strategies and informing public health policies to prevent and reduce the burden of these diseases in diverse populations. REGISTRATION: URL: https://www.crd.york.ac.uk/prospero/; Unique identifier: CRD42020170503.


Subject(s)
Pharyngitis , Rheumatic Fever , Rheumatic Heart Disease , Streptococcal Infections , Humans , Rheumatic Heart Disease/diagnosis , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Rheumatic Fever/diagnosis , Rheumatic Fever/epidemiology , Rheumatic Fever/prevention & control , Streptococcal Infections/epidemiology , Streptococcal Infections/prevention & control , Pharyngitis/epidemiology , Pharyngitis/prevention & control , Pharyngitis/complications , Risk Factors
5.
J Am Heart Assoc ; 13(2): e031252, 2024 Jan 16.
Article in English | MEDLINE | ID: mdl-38226514

ABSTRACT

BACKGROUND: The Active Community Case Management Platform is a cloud-based technology developed to facilitate rheumatic heart disease case management by health care providers. This study aimed to design and pilot an automated short message service (SMS) intervention to support secondary prophylaxis adherence. METHODS AND RESULTS: We developed a concise library of messages to support secondary antibiotic prophylaxis. The SMS intervention used TextIT, an interface that enables users to send out interactive SMS messages at scale. The message bank was piloted in a cohort of 50 patients with rheumatic heart disease randomized into 2 groups. Group 1 received standard support (nurse-led/Active Community Case Management Platform). Group 2 received standard support plus SMS intervention for 2 months in the Lira and Gulu districts of Northern Uganda. We collected qualitative data on participants' experiences and assessed treatment adherence. Using a sequential user-centered process consisting of 4 phases (phases 1-4), we developed a message bank (n=43) deployed during our pilot study. There were no between-group differences in treatment adherence or acceptance. Interviews of participants indicated that the intervention was viewed positively. A total of 75% of SMS recipients responded to the messages, and 25% called the study staff to acknowledge receipt of text messages. CONCLUSIONS: This study has successfully developed a bank of SMS messages to support secondary antibiotic prophylaxis adherence. We have demonstrated the feasibility and acceptability of SMS technology in rheumatic heart disease care management. Future work will include integrating automated SMS into the Active Community Case Management Platform and a larger study of integrated SMS to reduce health care worker burden for patient support and improve adherence to secondary antibiotic prophylaxis.


Subject(s)
Rheumatic Heart Disease , Text Messaging , Humans , Anti-Bacterial Agents , Antibiotic Prophylaxis , Pilot Projects , Rheumatic Heart Disease/prevention & control , Uganda , User-Centered Design
6.
BMJ Glob Health ; 8(Suppl 9)2023 10.
Article in English | MEDLINE | ID: mdl-37914183

ABSTRACT

Secondary prevention of acute rheumatic fever (ARF) and rheumatic heart disease (RHD) involves continuous antimicrobial prophylaxis among affected individuals and is recognised as a cornerstone of public health programmes that address these conditions. However, several important scientific issues around the secondary prevention paradigm remain unresolved. This report details research priorities for secondary prevention that were developed as part of a workshop convened by the US National Heart, Lung, and Blood Institute in November 2021. These span basic, translational, clinical and population science research disciplines and are built on four pillars. First, we need a better understanding of RHD epidemiology to guide programmes, policies, and clinical and public health practice. Second, we need better strategies to find and diagnose people affected by ARF and RHD. Third, we urgently need better tools to manage acute RF and slow the progression of RHD. Fourth, new and existing technologies for these conditions need to be better integrated into healthcare systems. We intend for this document to be a reference point for research organisations and research sponsors interested in contributing to the growing scientific community focused on RHD prevention and control.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , United States , Humans , Rheumatic Fever/prevention & control , Rheumatic Fever/complications , Rheumatic Fever/diagnosis , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/diagnosis , Secondary Prevention , National Heart, Lung, and Blood Institute (U.S.) , Research Design
7.
BMJ Glob Health ; 8(Suppl 9)2023 10.
Article in English | MEDLINE | ID: mdl-37914182

ABSTRACT

Although entirely preventable, rheumatic heart disease (RHD), a disease of poverty and social disadvantage resulting in high morbidity and mortality, remains an ever-present burden in low-income and middle-income countries (LMICs) and rural, remote, marginalised and disenfranchised populations within high-income countries. In late 2021, the National Heart, Lung, and Blood Institute convened a workshop to explore the current state of science, to identify basic science and clinical research priorities to support RHD eradication efforts worldwide. This was done through the inclusion of multidisciplinary global experts, including cardiovascular and non-cardiovascular specialists as well as health policy and health economics experts, many of whom also represented or closely worked with patient-family organisations and local governments. This report summarises findings from one of the four working groups, the Tertiary Prevention Working Group, that was charged with assessing the management of late complications of RHD, including surgical interventions for patients with RHD. Due to the high prevalence of RHD in LMICs, particular emphasis was made on gaining a better understanding of needs in the field from the perspectives of the patient, community, provider, health system and policy-maker. We outline priorities to support the development, and implementation of accessible, affordable and sustainable interventions in low-resource settings to manage RHD and related complications. These priorities and other interventions need to be adapted to and driven by local contexts and integrated into health systems to best meet the needs of local communities.


Subject(s)
Rheumatic Heart Disease , United States , Humans , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Tertiary Prevention , National Heart, Lung, and Blood Institute (U.S.)
8.
BMJ Glob Health ; 8(Suppl 9)2023 10.
Article in English | MEDLINE | ID: mdl-37914184

ABSTRACT

Primary prevention of acute rheumatic fever (ARF) and rheumatic heart disease (RHD) encompasses the timely diagnosis and adequate treatment of the superficial group A Streptococcus (GAS) infections pharyngitis and impetigo. GAS is the only known inciting agent in the pathophysiology of the disease. However, sufficient evidence indicates that the uptake and delivery of primary prevention approaches in RHD-endemic regions are significantly suboptimal. This report presents expert deliberations on priority research and implementation opportunities for primary prevention of ARF/RHD that were developed as part of a workshop convened by the US National Heart, Lung, and Blood Institute in November 2021. The opportunities identified by the Primary Prevention Working Group encompass epidemiological, laboratory, clinical, implementation and dissemination research domains and are anchored on five pillars including: (A) to gain a better understanding of superficial GAS infection epidemiology to guide programmes and policies; (B) to improve diagnosis of superficial GAS infections in RHD endemic settings; (C) to develop scalable and sustainable models for delivery of primary prevention; (D) to understand potential downstream effects of the scale-up of primary prevention and (E) to develop and conduct economic evaluations of primary prevention strategies in RHD endemic settings. In view of the multisectoral stakeholders in primary prevention strategies, we emphasise the need for community co-design and government engagement, especially in the implementation and dissemination research arena. We present these opportunities as a reference point for research organisations and sponsors who aim to contribute to the increasing momentum towards the global control and prevention of RHD.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Humans , National Heart, Lung, and Blood Institute (U.S.) , Primary Prevention , Rheumatic Fever/diagnosis , Rheumatic Fever/prevention & control , Rheumatic Fever/epidemiology , Rheumatic Heart Disease/diagnosis , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/epidemiology , United States
10.
BMJ Glob Health ; 8(Suppl 9)2023 10.
Article in English | MEDLINE | ID: mdl-37914185

ABSTRACT

The social determinants of health (SDH), such as access to income, education, housing and healthcare, strongly shape the occurrence of acute rheumatic fever (ARF) and rheumatic heart disease (RHD) at the household, community and national levels. The SDH are systemic factors that privilege some more than others and result in poverty and inequitable access to resources to support health and well-being. Primordial prevention is the modification of SDH to improve health and reduce the risk of disease acquisition and the subsequent progression to RHD. Modifying these determinants using primordial prevention strategies can reduce the risk of exposure to Group A Streptococcus, a causative agent of throat and skin infections, thereby lowering the risk of initiating ARF and its subsequent progression to RHD.This report summarises the findings of the Primordial Prevention Working Group-SDH, which was convened in November 2021 by the National Heart, Lung, and Blood Institute to assess how SDH influence the risk of developing RHD. Working group members identified a series of knowledge gaps and proposed research priorities, while recognising that community engagement and partnerships with those with lived experience will be integral to the success of these activities. Specifically, members emphasised the need for: (1) global analysis of disease incidence, prevalence and SDH characteristics concurrently to inform policy and interventions, (2) global assessment of legacy primordial prevention programmes to help inform the co-design of interventions alongside affected communities, (3) research to develop, implement and evaluate scalable primordial prevention interventions in diverse settings and (4) research to improve access to and equity of services across the RHD continuum. Addressing SDH, through the implementation of primordial prevention strategies, could have broader implications, not only improving RHD-related health outcomes but also impacting other neglected diseases in low-resource settings.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Humans , Rheumatic Fever/epidemiology , Rheumatic Fever/prevention & control , Rheumatic Fever/complications , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/etiology , Social Determinants of Health , Research , Primary Prevention
11.
Antimicrob Agents Chemother ; 67(12): e0096223, 2023 12 14.
Article in English | MEDLINE | ID: mdl-37971244

ABSTRACT

Since 1955, the recommended strategy for rheumatic heart disease (RHD) secondary prophylaxis has been benzathine penicillin G [BPG; 1.2 MU (900 mg)] injections administered intramuscularly every 4 weeks. Due to dosing frequency, pain, and programmatic challenges, adherence is suboptimal. It has previously been demonstrated that BPG delivered subcutaneously at a standard dose is safe and tolerable and has favorable pharmacokinetics, setting the scene for improved regimens with less frequent administration. The safety, tolerability, and pharmacokinetics of subcutaneous infusions of high-dose BPG were assessed in 24 healthy adult volunteers assigned to receive either 3.6, 7.2, or 10.8 MU (three, six, and nine times the standard dose, respectively) as a single subcutaneous infusion. The delivery of the BPG to the subcutaneous tissue was confirmed with ultrasonography. Safety assessments, pain scores, and penicillin concentrations were measured for 16 weeks post-dose. Subcutaneous infusion of penicillin (SCIP) was generally well tolerated with all participants experiencing transient, mild infusion-site reactions. Prolonged elevated penicillin concentrations were described using a combined zero-order (44 days) and first-order (t1/2 = 12 days) absorption pharmacokinetic model. In simulations, time above the conventionally accepted target concentration of 20 ng/mL (0.02 µg/mL) was 57 days for 10.8 MU delivered by subcutaneous infusion every 13 weeks compared with 9 days of every 4-weekly dosing interval for the standard 1.2 MU intramuscular dose (i.e., 63% and 32% of the dosing interval, respectively). High-dose SCIP (BPG) is safe, has acceptable tolerability, and may be suitable for up to 3 monthly dosing intervals for secondary prophylaxis of RHD.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Adult , Humans , Anti-Bacterial Agents/pharmacokinetics , Infusions, Subcutaneous , Pain/drug therapy , Penicillin G Benzathine/adverse effects , Rheumatic Fever/prevention & control , Rheumatic Heart Disease/drug therapy , Rheumatic Heart Disease/prevention & control
12.
BMJ Open ; 13(10): e071540, 2023 10 28.
Article in English | MEDLINE | ID: mdl-37898491

ABSTRACT

INTRODUCTION: Rheumatic heart disease (RHD) affects over 39 million people worldwide, the majority in low-income and middle-income countries. Secondary antibiotic prophylaxis (SAP), given every 3-4 weeks can improve outcomes, provided more than 80% of doses are received. Poor adherence is strongly correlated with the distance travelled to receive prophylaxis. Decentralising RHD care has the potential to bridge these gaps and at least maintain or potentially increase RHD prophylaxis uptake. A package of implementation strategies was developed with the aim of reducing barriers to optimum SAP uptake. METHODS AND ANALYSIS: A hybrid implementation-effectiveness study type III was designed to evaluate the effectiveness of a package of implementation strategies including a digital, cloud-based application to support decentralised RHD care, integrated into the public healthcare system in Uganda. Our overarching hypothesis is that secondary prophylaxis adherence can be maintained or improved via a decentralisation strategy, compared with the centralised delivery strategy, by increasing retention in care. To evaluate this, eligible patients with RHD irrespective of their age enrolled at Lira and Gulu hospital registry sites will be consented for decentralised care at their nearest participating health centre. We estimated a sample size of 150-200 registrants. The primary outcome will be adherence to secondary prophylaxis while detailed implementation measures will be collected to understand barriers and facilitators to decentralisation, digital application tool adoption and ultimately its use and scale-up in the public healthcare system. ETHICS AND DISSEMINATION: This study was approved by the Institutional Review Board (IRB) at Cincinnati Children's Hospital Medical Center (IRB 2021-0160) and Makerere University School of Medicine Research Ethics Committee (Mak-SOMREC-2021-61). Participation will be voluntary and informed consent or assent (>8 but <18) will be obtained prior to participation. At completion, study findings will be communicated to the public, key stakeholders and submitted for publication.


Subject(s)
Rheumatic Heart Disease , Child , Humans , Rheumatic Heart Disease/prevention & control , Uganda , Case Management , Anti-Bacterial Agents/therapeutic use , Politics
13.
J Transcult Nurs ; 34(6): 443-452, 2023 11.
Article in English | MEDLINE | ID: mdl-37572036

ABSTRACT

INTRODUCTION: The prevalence of acute rheumatic fever (ARF) and rheumatic heart disease (RHD) among Australia's First Nations populations are some of the highest in the world, accounting for 95% of the 2,244 ARF notifications between 2015 and 2019 in Australia. A key issue in treating ARF is long-term secondary prophylaxis, yet only one in five patients received treatment in 2019. This review identifies barriers to secondary prophylaxis of ARF in Australia's First Nations people. METHODS: An integrative review was undertaken utilizing PubMed, CINAHL, ProQuest, and Wiley Online. Joanna Briggs Institute critical appraisal tools were used, followed by thematic analysis. RESULTS: The key themes uncovered included: issues with database and recall systems, patient/family characteristics, service delivery location and site, pain of injection, education (including language barriers), and patient-clinician relationship. CONCLUSIONS: A national RHD register, change in operation model, improved pain management, improved education, and need for consistent personnel is suggested.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Humans , Rheumatic Fever/complications , Rheumatic Fever/prevention & control , Rheumatic Fever/epidemiology , Rheumatic Heart Disease/complications , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Australia/epidemiology , Secondary Prevention , Pain Management
14.
BMJ Open ; 13(6): e073300, 2023 06 01.
Article in English | MEDLINE | ID: mdl-37263687

ABSTRACT

INTRODUCTION: Rheumatic heart disease (RHD) is responsible for a significant burden of cardiovascular morbidity and mortality, and remains the most common cause of acquired heart disease among children and young adults in low-income and middle-income countries. Additionally, the global COVID-19 pandemic has forced the emergency restructuring of many health systems, which has had a broad impact on health in general, including cardiovascular disease. Despite significant cost to the health system and estimates from 2015 indicating both high incidence and prevalence of RHD in South Africa, no cohesive national strategy exists. An updated review of national burden of disease estimates, as well as literature on barriers to care for patients with RHD, will provide crucial information to assist in the development of a national RHD programme. METHODS AND ANALYSIS: Using predefined search terms that capture relevant disease processes from Group A Streptococcal (GAS) infection through to the sequelae of RHD, a search of PubMed, Scopus, ISI Web of Science, Sabinet African Journals, SA Heart and Current and Completed Research databases will be performed. All eligible studies on RHD, acute rheumatic fever and GAS infection published from April 2014 to December 2022 will be included. Vital registration data for the same period from Statistics South Africa will also be collected. A standardised data extraction form will be used to capture results for both quantitative and qualitative analyses. All studies included in burden of disease estimates will undergo quality assessment using standardised tools. Updated estimates on mortality and morbidity as well as a synthesis of work on primary, secondary and tertiary prevention of RHD will be reported. ETHICS AND DISSEMINATION: No ethics clearance is required for this study. Findings will be disseminated in a peer-reviewed journal and submitted to national stakeholders in RHD. PROSPERO REGISTRATION NUMBER: CRD42023392782.


Subject(s)
COVID-19 , Rheumatic Heart Disease , Streptococcal Infections , Child , Young Adult , Humans , Rheumatic Heart Disease/therapy , Rheumatic Heart Disease/prevention & control , South Africa/epidemiology , Pandemics , COVID-19/epidemiology , Streptococcal Infections/epidemiology , Disease Progression , Cost of Illness , Review Literature as Topic , Systematic Reviews as Topic
15.
Aust N Z J Public Health ; 47(4): 100071, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37364309

ABSTRACT

OBJECTIVE: Rheumatic heart disease (RHD) comprises heart-valve damage caused by acute rheumatic fever (ARF). The Australian Government Rheumatic Fever Strategy funds RHD Control Programs to support detection and management of ARF and RHD. We assessed epidemiological changes during the years of RHD Control Program operation. METHODS: Linked RHD register, hospital and death data from four Australian jurisdictions were used to measure ARF/RHD outcomes between 2010 and 2017, including: 2-year progression to severe RHD/death; ARF recurrence; secondary prophylaxis delivery and earlier disease detection. RESULTS: Delivery of secondary prophylaxis improved from 53% median proportion of days covered (95%CI: 46-61%, 2010) to 70% (95%CI: 71-68%, 2017). Secondary prophylaxis adherence protected against progression to severe RHD/death (hazard ratio 0.2, 95% CI 0.1-0.8). Other measures of program effectiveness (ARF recurrences, progression to severe RHD/death) remained stable. ARF case numbers and concurrent ARF/RHD diagnoses increased. CONCLUSIONS: RHD Control Programs have contributed to major success in the management of ARF/RHD through increased delivery of secondary prevention yet ARF case numbers, not impacted by secondary prophylaxis and sensitive to increased awareness/surveillance, increased. IMPLICATIONS FOR PUBLIC HEALTH: RHD Control Programs have a major role in delivering cost-effective RHD prevention. Sustained investment is needed but with greatly strengthened primordial and primary prevention.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Humans , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/diagnosis , Australia/epidemiology , Rheumatic Fever/epidemiology , Rheumatic Fever/prevention & control , Rheumatic Fever/diagnosis , Secondary Prevention , Proportional Hazards Models
16.
Eur J Pharm Biopharm ; 189: 240-250, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37354997

ABSTRACT

BACKGROUND: Regular intramuscular (i.m.) benzathine penicillin G (BPG) injections have been the cornerstone of rheumatic heart disease (RHD) secondary prophylaxis since the 1950s. Patient adherence to IM BPG is poor, largely due to pain, the need for regular injections every 3-4 weeks and health sector delivery challenges in resource-limited settings. There is an urgent need for new approaches for secondary prophylaxis, such as an implant which could provide sustained penicillin concentrations for more than 6 months. METHODS: In this study we developed and evaluated a slow release implant with potential for substantially extended treatment. The side wall of a solid drug rich core was coated with polycaprolactone which acts as an impermeable barrier. The exposed surfaces at the ends of the implant defined the release surface area, and the in vitro release rate of drug was proportional to the exposed surface area across implants of differing diameter. The in vivo pharmacokinetics and tolerability of the implants were evaluated in a sheep model over 9 weeks after subcutaneous implantation. RESULTS: The absolute release rates obtained for the poorly water-soluble benzathine salt were dependent on the exposed surface area demonstrating the impermeability of the wall of the implant. The implants were well-tolerated after subcutaneous implantation in a sheep model, without adverse effects at the implantation site. Gross structural integrity was maintained over the course of the study, with erosion limited to the dual-exposed ends. Steady release of penicillin G was observed over the 9 weeks and resulted in approximately constant plasma concentrations close to accepted target concentrations. CONCLUSION: In principle, a long acting BPG implant is feasible as an alternative to i.m. injections for secondary prophylaxis of RHD. However, large implant size is currently a significant impediment to clinical utility and acceptability.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Animals , Sheep , Penicillin G Benzathine/therapeutic use , Rheumatic Heart Disease/prevention & control , Rheumatic Heart Disease/drug therapy , Rheumatic Fever/drug therapy , Rheumatic Fever/prevention & control , Anti-Bacterial Agents , Delayed-Action Preparations/therapeutic use , Injections, Intramuscular
17.
BMC Cardiovasc Disord ; 23(1): 155, 2023 03 25.
Article in English | MEDLINE | ID: mdl-36966309

ABSTRACT

BACKGROUND: Rheumatic Heart Disease (RHD) continues to cause suffering and premature deaths in many sub-Saharan Africa (SSA) countries, where the disease is still endemic. RHD is largely preventable and determining its community burden is an important critical step in any RHD prevention program. METHODS: We conducted a cross-sectional study of 5-16 years old pupils from 11 primary schools participating in an RHD prevention program in 4 districts in Tanzania, between 2018 and 2019. At the school, all children were invited to participate after receiving consent from their parents/guardians. Participating children filled a questionnaire and were auscultated for cardiac murmurs. Echocardiographic screening was done by two experienced cardiologists, using a hand-held machine (V-Scan, GE®). All positive screening tests were stored for further examination by the same two cardiologists to reach to a consensus of definite, borderline or no RHD, using a modified World Heart Federation (WHF) criterion. RESULTS: Of the 6895 children invited, 4738 (68.7%) were screened and 4436 (64.3%) had complete data. The mean (SD) age was 10.04 (2.43) years, and 2422 (54.6%) were girls. Fifty three (1.2%) children were found to have a murmur. The proportion of children with trace or mild valvular regurgitation, sub-valvular/chordal thickening and valvular thickening/deformity were 8.3%, 1.3%, and 1.0%, respectively. Sub-clinical RHD was found in 95 children (59 definite and 36 borderline), giving a prevalence of 2.1%, [95% CI 1.7% - 2.6%]. Sub-clinical RHD was independently associated with female sex (aOR 1.83, 95% CI 1.18-2.85, p = 0.007), older age groups (aOR 1.73, 95% CI 1.10-2.72, p = 0.018 for age group 11-14 years; and aOR 3.02 95% CI 1.01-9.05, p = 0.048 for age group 15-16 years), as well as presence of a cardiac murmur, aOR 5.63 95% CI 2.31-13.69, p < 0.0001. None of the studied socio- or economic factors was associated with the presence of sub-clinical RHD in this study. CONCLUSION: The prevalence of sub-clinical RHD among primary school children in Tanzania is 2.1%, similar to previous reports in SSA. Efforts to prevent and control RHD in our communities are highly warranted.


Subject(s)
Heart Defects, Congenital , Rheumatic Heart Disease , Humans , Child , Female , Aged , Adolescent , Child, Preschool , Male , Rheumatic Heart Disease/diagnostic imaging , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Cross-Sectional Studies , Tanzania/epidemiology , Mass Screening , Echocardiography , Prevalence
19.
Lancet Glob Health ; 11(3): e445-e455, 2023 03.
Article in English | MEDLINE | ID: mdl-36796988

ABSTRACT

BACKGROUND: There is a dearth of evidence on the cost-effectiveness of a combination of population-based primary, secondary, and tertiary prevention and control strategies for rheumatic fever and rheumatic heart disease. The present analysis evaluated the cost-effectiveness and distributional effect of primary, secondary, and tertiary interventions and their combinations for the prevention and control of rheumatic fever and rheumatic heart disease in India. METHODS: A Markov model was constructed to estimate the lifetime costs and consequences among a hypothetical cohort of 5-year-old healthy children. Both health system costs and out-of-pocket expenditure (OOPE) were included. OOPE and health-related quality-of-life were assessed by interviewing 702 patients enrolled in a population-based rheumatic fever and rheumatic heart disease registry in India. Health consequences were measured in terms of life-years and quality-adjusted life-years (QALY) gained. Furthermore, an extended cost-effectiveness analysis was undertaken to assess the costs and outcomes across different wealth quartiles. All future costs and consequences were discounted at an annual rate of 3%. FINDINGS: A combination of secondary and tertiary prevention strategies, which had an incremental cost of ₹23 051 (US$30) per QALY gained, was the most cost-effective strategy for the prevention and control of rheumatic fever and rheumatic heart disease in India. The number of rheumatic heart disease cases prevented among the population belonging to the poorest quartile (four cases per 1000) was four times higher than the richest quartile (one per 1000). Similarly, the reduction in OOPE after the intervention was higher among the poorest income group (29·8%) than among the richest income group (27·0%). INTERPRETATION: The combined secondary and tertiary prevention and control strategy is the most cost-effective option for the management of rheumatic fever and rheumatic heart disease in India, and the benefits of public spending are likely to be accrued much more by those in the lowest income groups. The quantification of non-health gains provides strong evidence for informing policy decisions by efficient resource allocation on rheumatic fever and rheumatic heart disease prevention and control in India. FUNDING: Department of Health Research, Ministry of Health and Family Welfare, New Delhi.


Subject(s)
Rheumatic Fever , Rheumatic Heart Disease , Child , Humans , Child, Preschool , Rheumatic Fever/epidemiology , Rheumatic Fever/prevention & control , Rheumatic Heart Disease/epidemiology , Rheumatic Heart Disease/prevention & control , Cost-Effectiveness Analysis , Cost-Benefit Analysis , Health Expenditures , India/epidemiology , Quality-Adjusted Life Years
20.
Glob Heart ; 18(1): 6, 2023.
Article in English | MEDLINE | ID: mdl-36846723

ABSTRACT

Introduction: Rheumatic heart disease (RHD) remains a significant public health problem in countries with limited health resources. People living with RHD face numerous social challenges and have difficulty navigating ill-equipped health systems. This study sought to understand the impact of RHD on PLWRHD and their households and families in Uganda. Methods: In this qualitative study, we conducted in-depth interviews with 36 people living with RHD sampled purposively from Uganda's national RHD research registry, stratifying the sample by geography and severity of disease. Our interview guides and data analysis used a combination of inductive and deductive methods, with the latter informed by the socio-ecological model. We ran thematic content analysis to identify codes that were then collapsed into themes. Coding was done independently by three analysts, who compared their results and iteratively updated the codebook. Results: The inductive portion of our analysis, which focused on the patient experience, revealed a significant impact of RHD on work and school. Participants often lived in fear of the future, faced limited childbirth choices, experienced domestic conflict, and suffered stigmatization and low self-esteem. The deductive portion of our analysis focused on barriers and enablers to care. Major barriers included the high out-of-pocket cost of medicines and travel to health facilities, as well as poor access to RHD diagnostics and medications. Major enablers included family and social support, financial support within the community, and good relationships with health workers, though this varied considerably by location. Conclusion: Despite several personal and community factors that support resilience, PLWRHD in Uganda experience a range of negative physical, emotional, and social consequences from their condition. Greater investment is needed in primary healthcare systems to support decentralized, patient-centered care for RHD. Implementing evidence-based interventions that prevent RHD at district level could greatly reduce the scale of human suffering. There is need to increase investment in primary prevention and tackling social determinants, to reduce the incidence of RHD in communities where the condition remains endemic.


Subject(s)
Rheumatic Heart Disease , Humans , Rheumatic Heart Disease/therapy , Rheumatic Heart Disease/prevention & control , Uganda/epidemiology , Qualitative Research , Health Facilities , Registries
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