Adherence to secondary antibiotic prophylaxis for patients with rheumatic heart disease diagnosed through screening in Fiji

Adult mortality from non-communicable diseases in Fiji's major ethnic groups 2013-17

Background

Sustainable Development Goal 3.4.1 (SDG3.4.1) targets a one-third reduction in non-communicable disease (NCD) mortality in ages 30-69-years by 2030 (relative to 2015). Directing interventions to achieve this aim requires reliable estimates of underlying cause of death (UCoD). This may be problematic when both cardiovascular diseases (CVD) and diabetes are present due to a lack of consistency in certification of such deaths. We estimate empirically 2013-17 NCD mortality in Fiji, by sex and ethnicity, from CVD, diabetes, cancer, and chronic lower respiratory diseases (CRD), and aggregated as NCD4.

Methods

UCoD was determined from Medical Certificates of Cause-of-Death (MCCD) from the Fiji Ministry of Health after pre-processing of mortality data where diabetes and/or hypertension were present in order to generate internationally comparable UCoD. If no potentially fatal complications from diabetes or hypertension accompanied these causes in Part I (direct cause) of the MCCD, these conditions were re-assigned to Part II (contributory cause). The probability of a 30-year-old dying before reaching age 70-years (PoD30-70), by cause, was calculated.

Findings

The PoD30-70 from NCD4 over 2013-17 differed by sex and ethnicity: in women, it was 36% (95%CI 35-37%) in i-Taukei and 27% (26-28%) in Fijians of Indian descent (FID); in men, it was 41% (40-42%) in both i-Taukei and FID.PoD30-70 from CVD, diabetes, cancer and CRD in women was: 18%, 10%, 13% and 1·0% in i-Taukei; 13%, 10%, 5·6% and 1·1% in FID; in men was: 28%, 8.4%, 7·6% and 2·2% in i-Taukei; 31%, 8.3%, 3.5% and 3·1% in FID.

Interpretation

To achieve SDG3.4.1 goals in Fiji by 2030, effective population wide and ethnic-specific interventions targeting multiple NCDs are required to reduce PoD30-70 from NCD4: from 36% to 24% in i-Taukei, and 27% to 18% in FID women; and from 41% to 27% in i-Taukei and FID men.

Funding

Not applicable.

Adherence to secondary antibiotic prophylaxis among patients with acute rheumatic fever and/or rheumatic heart disease: a systematic review and meta-analysis

OBJECTIVES

Worldwide, a number of studies have been conducted to assess the prevalence of adherence to secondary antibiotic prophylaxis and to identify the associated factors (reasons) for poor adherence among patients with rheumatic heart disease or acute rheumatic fever (RHD/ARF). However, results were highly inconsistent with a prevalence ranging from 10% to 93%; and the reported reasons or associated factors have not been systematically reviewed. Therefore, this study aimed to assess the prevalence of adherence to secondary antibiotic prophylaxis among patients with RHD/ARF; and to review the associated factors (reasons) for poor adherence.

DESIGN

Systematic review and meta-analysis.

DATA SOURCES

PubMed/Medline, Google Scholar, Cochrane Review and African Journals Online databases.

ELIGIBILITY CRITERIA

Articles published in English from 1 January 2005 to 1 December 2022 and reported the prevalence of adherence using ≥80% cut-off points were included.

DATA EXTRACTION AND SYNTHESIS

Data were extracted using the Microsoft Excel and analysed by STATA V.11.0. A meta-analysis was conducted using the weighted inverse-variance random-effects model. Reasons for poor adherence were identified through thematic analysis.

RESULTS

33 articles with a total sample size of 7158 patients were included. The pooled prevalence of adherence to secondary antibiotic prophylaxis among patients with RHD/ARF was found to be 58.5% (95% CI: 48.2% to 68.7%; I2=99.2%; p<0.001). Rural residency, lack of money, distance from the health institutions, inaccessibility, poor counselling, forgetting schedules, lack of disease knowledge and fear of injection pain were the reported factors or reasons for poor adherence.

CONCLUSION

About 41.5% of patients with RHD/ARF were found to have poor adherence. Long distance from health institutions, forgetting schedules, poor counselling and lack of knowledge and skill among healthcare workers were some of the modifiable reasons for poor adherence. Therefore, decentralisation of the follow-up care, creating schedule reminding systems and providing targeted health education might help to improve adherence.

Detection and management of latent rheumatic heart disease: a narrative review

Rheumatic heart disease (RHD) is a public health concern in many developing nations around the world. Early detection of latent or subclinical RHD can help in reversing mild lesions, retarding disease progression, reducing morbidity and mortality, and improving the quality of life of patients. Echocardiography is the gold-standard method for screening and confirming latent RHD cases. The rates and determinants of progression of latent RHD cases as assessed by echocardiography have been found to be variable through studies. Even though latent RHD has a slow rate of progression, the rate of progression of its subtype, 'definite' RHD, is substantial. A brief training of nonexpert operators on the use of handheld echocardiography with a simplified protocol is an important strategy to scale up the screening program to detect latent cases. Newer advancements in screening, such as deep-learning digital stethoscopes and telehealth services, have provided an opportunity to expand screening programs even in resource-constrained settings. Newer studies have established the efficacy and safety profile of secondary antibiotic prophylaxis in latent RHD. The concerned authorities in endemic regions of the world should work on improving the availability and accessibility of antibiotic prophylaxis.

Secondary Prophylaxis Among First Nations People With Acute Rheumatic Fever in Australia: An Integrative Review

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.

Population-based assessment of cardiovascular complications of rheumatic heart disease in Fiji: a record-linkage analysis

OBJECTIVE

To determine population-based rates of non-fatal complications of rheumatic heart disease (RHD).

DESIGN

Retrospective cohort study based on multiple sources of routine clinical and administrative data amalgamated by probabilistic record-linkage.

SETTING

Fiji, an upper-middle-income country, where most of the population has access to government-funded healthcare services.

PARTICIPANTS

National cohort of 2116 patients with clinically apparent RHD aged 5-69 years during 2008 and 2012.

PRIMARY AND SECONDARY OUTCOME MEASURES

The primary outcome was hospitalisation for any of heart failure, atrial fibrillation, ischaemic stroke and infective endocarditis. Secondary outcomes were first hospitalisation for each of the complications individually in the national cohort as well as in hospital (n=1300) and maternity (n=210) subsets. Information on outcomes was obtained from discharge diagnoses coded in the hospital patient information system. Population-based rates were obtained using relative survival methods with census data as the denominator.

RESULTS

Among 2116 patients in the national cohort (median age, 23.3 years; 57.7% women), 546 (25.8%) were hospitalised for an RHD complication, a substantial proportion of all cardiovascular admissions in the country during this period in those aged 0-40 years (heart failure, 210/454, 46.3%; ischaemic stroke 31/134, 23.1%). Absolute numbers of RHD complications peaked during the third decade of life with higher population-based rates in women compared with men (incidence rate ratio 1.4, 95% CI 1.3 to 1.6, p<0.001). Hospitalisation for any RHD complication was associated with substantially increased risk of death (HR 5.4, 95% CI 3.4 to 8.8, p<0.001), especially after the onset of heart failure (HR 6.6, 95% CI 4.8 to 9.1, p<0.001).

CONCLUSIONS

Our study defines the burden of RHD-attributable morbidity in the general population of Fiji, potentially reflecting the situation in low-income and middle-income countries worldwide. Hospitalisation for an RHD complication is associated with markedly increased risk of death, re-emphasising the importance of effective early prevention.

Adherence to secondary prevention of rheumatic fever and rheumatic heart disease in young people: an 11-year retrospective study

OBJECTIVES

To evaluate the secondary prevention of acute rheumatic fever (ARF) and rheumatic heart disease (RHD) in the Townsville region, Australia.

METHODS

Adherence to benzathine benzylpenicillin G (BPG) was determined for 196 children and young adults aged under 22 years between January 2009 and December 2019, and factors associated with BPG adherence were analysed. Secondary outcomes included attendance at specialist reviews and echocardiograms.

RESULTS

Adequate adherence (80%) to regular BPG injections was met by 51.1% of the cohort. Adequate BPG adherence more likely occurred for those that attended the Paediatric Outreach Clinic (OR4.15, 95%CI:2.13-8.05) or a school delivery program (OR1.87, 95%CI:1.11-3.45). People with moderate/severe RHD had greater BPG adherence (OR1.76,95%CI:1.00-3.10). People in rural/remote areas were less likely to have adequate BPG adherence compared to urban counterparts (OR0.31, 95%CI:0.15-0.65). Adherence to echocardiography was 66% and specialist review attendance was 12.5-50%.

CONCLUSION

Half of the cohort in the Townsville region received adequate BPG prophylaxis to prevent ARF/RHD. Although rates were relatively higher than those reported in other Australian regions, health delivery goals should be close to 100%. Low attendance at specialist services was reported. Implication for public health: Delivery models with dedicated services, case management and family support could improve BPG adherence in individuals with ARF/RHD. Further resources in rural and remote areas are needed.

Awareness of rheumatic fever and rheumatic heart disease among the population in taif, Saudi Arabia 2020

Objective

Studies assessing knowledge about rheumatic fever (RF) and rheumatic heart disease (RHD) are scarce in KSA. The aim of this study was to assess the awareness about ARF and RHD among the population at Taif city, Saudi Arabia.

Methods

A cross-sectional study was done on 716 of residents of Taif city. A pre-designed questionnaire that collected data about the participants' demographic characters, their history of sore throat and medication used, participants' knowledge about cause and complications of sore throat, its relation to RHD, treatment, primary and secondary prevention of RHD.

Results

77% of the participants had a history of sore throat, of them 58.4% took antibiotics as a self-medication. A significant higher prevalence of previous history of sore throat was present among 42-50-year-old females, graduated, and those with an income above 10000 SR. Participants with an age of 18-24 years and graduated, had significantly higher percent of those who knew about: cause and complications of sore throat, sore throat is associated with heart diseases, and if treating sore throat can prevent heart disease. Females had a significantly higher percent of those who knew about: complications of sore throat, being extremely aware of that primary prevention of sore throat by using antibiotics such as penicillin and being extremely aware of secondary prevention of recurrence RF and decrease progression of RHD.

Conclusion

Raising awareness about ARF and RHD through health education programs is needed.

Improvement of Rheumatic Valvular Heart Disease in Patients Undergoing Prolonged Antibiotic Prophylaxis

Secondary prophylaxis of rheumatic heart diseases is efficient in reducing disease recurrence, heart damage, and cardiac impairment. We aimed to monitor the clinical evolution of a large Brazilian cohort of rheumatic patients under prolonged secondary prophylaxis. From 1986 to 2018, a cohort of 593 patients with rheumatic fever was followed every 6 months by the Reference Center for the Control and Prevention of Rheumatic Fever and Rheumatic Cardiopathy (CPCFR), Paraná, Brazil. In this cohort, 243 (41%) patients did not present cardiac damage (group I), while 350 (59%) were diagnosed with rheumatic heart disease (RHD) (group II) using the latest case definition. Among group II, 233 and 15 patients had impairment of the mitral and aortic valves, respectively, while 102 patients had impairment of both valves. Lesions on the mitral and aortic valves presented a regression in 69.9 and 48.7% of the patients, respectively. Active patient recruitment in the reference center and early detection of oropharyngeal GAS were important factors for optimal adherence to the prophylactic treatment. Patients with disease progression were associated with noncompliance to secondary prophylaxis. No patients undergoing regular prophylaxis presented progression of the rheumatic cardiac disease. Eighteen valvular surgeries were performed, and four (0.7%) patients died. This study confirmed that tailored and active efforts invested in rheumatic heart disease secondary prevention allowed for significant clinical improvement.

Adherence rates and risk factors for suboptimal adherence to secondary prophylaxis for rheumatic fever

AIM

Secondary prophylaxis with 3-4 weekly benzathine penicillin G injections is necessary to prevent disease morbidity and cardiac mortality in patients with acute rheumatic fever (ARF) and rheumatic heart disease (RHD). This study aimed to determine secondary prophylaxis adherence rates in the Far North Queensland paediatric population and to identify factors contributing to suboptimal adherence.

METHODS

A retrospective analysis of data recorded in the online RHD register for Queensland, Australia, was performed for a 10-year study period. The proportion of benzathine penicillin G injections delivered within intervals of ≤28 days and ≤35 days was measured. A multi-level mixed model logistic regression assessed the influence of age, gender, ethnicity, suburb, Accessibility and Remoteness Index of Australia class, number of people per dwelling, Index of Relative Socio-economic Advantage and Disadvantage, Index of Education and Occupation, year of inclusion on an ARF/RHD register and individual effect.

RESULTS

The study included 277 children and analysis of 7374 injections. No children received ≥80% of recommended injections within a 28-day interval. Four percent received ≥50% of injections within ≤28 days and 46% received ≥50% of injections at an extended interval of ≤35 days. Increasing age was associated with reduced delivery of injections within 35 days. Increasing year of inclusion was associated with improved delivery within 28 days. The random effect of individual patients was significantly associated with adherence.

CONCLUSIONS

Improved timely delivery of secondary prophylaxis for ARF and RHD is needed as current adherence is very low. Interventions should focus on factors specific to each individual child or family unit.

Throat Colonization and Antibiotic Susceptibility of Group a β-Hemolytic Streptococci Among Rheumatic Heart Disease Patients Attending a Cardiac Referral Hospital in Tanzania, a Descriptive Cross-Sectional Study

Background: Secondary prophylaxis against repeated attacks of acute rheumatic fever is an important intervention in patients with rheumatic heart disease (RHD), and it aims to prevent throat infection by group A β-hemolytic streptococcus (GAS); however, its implementation faces many challenges. This study aimed to assess throat colonization, antibiotic susceptibility, and factors associated with GAS colonization among patients with RHD attending care at Jakaya Kikwete Cardiac Institute in Dar-es-Salaam, Tanzania.

Methods: A descriptive cross-sectional study of RHD patients attending the Jakaya Kikwete Cardiac Institute was conducted from March to May 2018, where we consecutively enrolled all patients known to have RHD and coming for their regular clinic follow-up. A structured questionnaire was used to obtain patients' sociodemographic information, factors associated with GAS colonization, and status of secondary prophylaxis use and adherence. Throat swabs were taken and cultured to determine the presence of GAS, and isolates of GAS were tested for antibiotic susceptibility using Kirby–Bauer disk diffusion method according to the Clinical and Laboratory Standards Institute version 2015. Antibiotics of interest were chosen according to the Tanzanian Treatment Guidelines.

Results: In total, 194 patients with RHD were enrolled, their mean age was 28.4 ± 16.5 years, and 58.2% were females. Only 58 (29.9%) patients were on regular prophylaxis, 39 (20.1%) had stopped taking prophylaxis, whereas 97 (50.0%) had never been on prophylaxis. Throat cultures were positive for GAS in 25 (12.9%) patients. Patients who stopped prophylaxis were 3.26 times more likely to be colonized by GAS when compared to patients on regular prophylaxis. Majority (96%) of GAS isolates were susceptible to penicillin, ceftriaxone, and ciprofloxacin, whereas the highest resistance (20%) was observed with vancomycin. No GAS resistance was observed against penicillin.

Conclusion: The prevalence of GAS throat colonization is high among this population and is associated with stopping prophylaxis. The proportion of patients on regular secondary prophylaxis is unacceptably low, and interventions should target both patients' and physicians' barriers to effective secondary prophylaxis.

Adherence to Benzathine Penicillin G Secondary Prophylaxis and Its Determinants in Patients with Rheumatic Heart Disease at a Cardiac Center of an Ethiopian Tertiary Care Teaching Hospital

PURPOSE

Benzathine penicillin G (BPG) monthly administration is the most effective method for secondary prophylaxis against acute rheumatic fever (ARF). BPG's efficacy largely depends on adherence to treatment. This study was aimed at assessing adherence to BPG prophylaxis and its determinants among adult patients with rheumatic heart disease.

PATIENTS AND METHODS

An institutional cross-sectional study design was used. One hundred and forty-five patients receiving monthly BPG at the Adult Cardiac Clinic of Tikur Anbessa Specialized Hospital (TASH) were interviewed. Their 1-year BPG prophylaxis administration record was also reviewed. The rate of adherence to BPG injection was determined by calculating the percentage of the administered drug from the total expected doses. Data were entered and analyzed using Statistical Package for Social Sciences (SPSS) software version 25. Both descriptive and logistic regression analyses were computed to describe different variables and assess factors associated with adherence, respectively. A p-value <0.05 was used to declare association.

RESULTS

Among a total of 145 study participants involved, the majority (76.6%) of them had been receiving BPG for the last 10 years. The average adherence rate to monthly BPG injection was 80.60% with a range of 0% to 100%. However, only 101 (69.7%) of participants were taking ≥80% of their prescribed monthly BPG prophylaxis doses. Study participants with informal education 1.10 (0.023-46.96) and secondary school education 0.89 (0.10-8.11) were more and less likely to adhere to BPG injection, respectively, when compared with those who attended higher education programs. The regression analysis showed patients who were not admitted to the hospital (AOR: 26.22; CI: 2.55-269.70; p=0.006) and once admitted patients (AOR: 50.08; CI: 2.87-873.77; p=0.007) were more likely to adhere to their BPG injections than those admitted twice or more. The study participants who waited until the next appointment were also less adherent (AOR: 0.02; CI: 0.00-0.13; p=0.000) than those who went a few days later for receiving the missed/late dose.

CONCLUSION

The adherence rate to BPG injection among RHD patients was found to be high (80.60%). Patients' admission status and their action on missed and/or late doses were found to be important determinants of adherence in this study.

Echocardiographic screening for rheumatic heart disease in Turkish schoolchildren

BACKGROUND

The aim of this study is to investigate the prevalence of subclinical rheumatic heart disease in schoolchildren aged 5-18 by using portable echocardiography in Ankara, Turkey.

METHODS

The portable echocardiography screening was performed by a paediatric cardiologist for all of the cases. The mean age of 2550 healthy students was 11.09 ± 2.91 years (1339 females, 1211 males) in three private and three public schools. Echocardiographic studies were assessed according to 2012 World Heart Federation criteria for rheumatic heart disease.

RESULTS

After reviewing the echocardiographic images, 73 students were reevaluated by an advanced echocardiography device in the university hospital. Evidence of definite subclinical rheumatic heart disease was found in 39 students (15/1000) and borderline rheumatic heart disease in 20 students (8/1000). No children had any clinical symptoms. The mean age of children diagnosed with rheumatic heart disease and borderline rheumatic heart disease is 12.4 and 11.4 years, respectively. The risk of rheumatic heart disease was found to be increased sevenfold in girls between 14 and 18 years. We surprisingly observed that the prevalence of definite rheumatic heart disease in private schools located in high-income areas of Ankara was higher than that in public schools.

CONCLUSIONS

This is the first and largest single-centred echocardiographic screening study for subclinical rheumatic heart disease in Turkish schoolchildren. The frequency of rheumatic heart disease has been found to be 15/1000. This finding is similar to those of recent echocardiographic screening studies performed in middle and high-risk populations. We conclude that to decrease the burden of rheumatic heart disease, echocardiographic screening studies are necessary, and long-term follow-up of children with echocardiographically diagnosed subclinical rheumatic heart disease is needed.

Scolopendra subspinipes mutilans L. Koch Ameliorates Rheumatic Heart Disease by Affecting Relative Percentages of CD4+CD25+FoxP3 Treg and CD4+IL17 T Cells

(Scolopendra subspinipes mutilans L. Koch. (SSLK) helps reduce the risk of coronary heart disease (CHD) but its effects on rheumatic heart disease (RHD) patients remain unclear. 80 RHD patients were recruited and randomly assigned into SG (to receive SSLK treatment) and CG (to receive placebo) groups, and the intervention lasted for 3 months. The following cardiac indexes were measured, including mean arterial pressure (MAP), heart rate (HR), central venous pressure (CVP), blood lactate, fatigue, shortness of breath, palpitation, and chest pain. ELISA kits were used to analyze creatine kinase isoenzyme (CK-MB), serum troponin T (cTnT), CRP, IL-1β, IL-6, and TNF-α, malondialdehyde (MDA), and superoxide dismutase (SOD). Relative percentages of CD4⁺CD25⁺FoxP3 regulatory (Treg) and CD4⁺IL-17 T cells were measured using flow cytometry. After 3-month therapy, SSLK intervention improved MAP, HR, CVP, fatigue, palpitation, and shortness breath of CHD patients, reduced the levels of blood lactate, CK-MB, cTnT, CRP, IL-1β, IL-6, TNF-α, MDA, and increased SOD level (p < 0.05). Meanwhile, SSLK treatment increased the percentages of CD4⁺CD25⁺FoxP3 Treg cells and reduced relative percentages of CD4⁺IL-17 T cells in a dose-dependent way (p < 0.05). Relative percentage of CD4⁺CD25⁺FoxP3 Treg cells had negative relationship while CD4⁺IL17 T cells had positive relationship with CK-MB, cTnT, CRP, and TNF-a (p < 0.01). SSLK ameliorated RHD by affecting the balance of CD4⁺CD25⁺FoxP3 Treg and CD4⁺IL17 T cells.

Effect of anaemia on the diagnosis of rheumatic heart disease using World Heart Federation criteria

BACKGROUND

There is overlap between pathological mitral regurgitation seen in borderline rheumatic heart disease using World Heart Federation echocardiography criteria and physiologic regurgitation found in normal children. One possible contributing factor is higher rates of anaemia in endemic countries.

OBJECTIVE

To investigate the contribution of anaemia as a potential confounder in the diagnosis of rheumatic heart disease detected in echocardiographic screening.

METHOD/DESIGN

A novel Server 2012 data warehouse tool was used to incorporate haematology and echocardiography databases. The study included a convenience sample of patients from 5 to 18 years old without structural or functional heart disease that had a haemoglobin value within 1 month prior to an echocardiogram. Echocardiogram images were reviewed to determine presence or absence of World Heart Federation criteria for rheumatic heart disease. The rate of rheumatic heart disease among anaemic and non-anaemic children according to gender- and age-based norms groups was compared.

RESULTS

Of the 935 patients who met the study inclusion criteria, 406 were classified as anaemic. There was no difference in the rate of echocardiograms meeting criteria for borderline rheumatic heart disease in anaemic (2.0%, 95% CI 0.6-3.3%) and non-anaemic children (1.3%, 95% CI 0.3-2.3%). However, there was a statistically significant increase in rates of mitral regurgitation of unclear significance among anaemic versus non-anaemic patients (8.6 versus 3.6%; p = 0.0012).

CONCLUSION

Anaemia does not increase the likelihood of meeting echocardiographic criteria for borderline rheumatic heart disease. Future studies should evaluate for the correlation between anaemia and mitral regurgitation in endemic settings.

Secondary prevention for screening detected rheumatic heart disease: opportunities to improve adherence

Background

Secondary prevention is an effective treatment for rheumatic heart disease (RHD), but ensuring high adherence to prophylaxis over many years is challenging and requires understanding of local factors.

Methods

Participants were young people diagnosed with RHD through echocardiographic screening in Fiji. We used a structured interview to evaluate the following: health seeking behaviours; attitudes, practice, barriers and potential improvement strategies for adherence to antibiotic prophylaxis; and adolescent-friendly qualities of the health service.

Results

One hundred and one participants were interviewed (median age, 17.2 years). Adherence was very low overall (adequate in 6%). Sore throat and fever with sore joints were experienced in the preceding year by 42% and 28%, respectively. Barriers to receiving treatment included taking alternate treatments and the perception that symptoms were benign and self-limiting. Reasons for missing prophylaxis injections included lack of awareness, feeling well, transport cost and access, and medication unavailability (>40% of participants each). The injection health service had many perceived strengths, but inclusion of adolescents in decision making, and quality of educational materials were deficiencies. Reminder strategies, particularly phone-based reminders, were considered helpful by 94%.

Conclusions

We identified several factors influencing secondary prevention that may be used to develop interventions to improve adherence.

Screening-detected rheumatic heart disease can progress to severe disease

OBJECTIVES

Echocardiography is a sensitive test for rheumatic heart disease (RHD) screening; however the natural history of RHD detected on screening has not been established. We aimed to evaluate the progression of screening-detected RHD in Fiji.

METHODS

All young people previously diagnosed with RHD through screening, with echocardiograms available for review, were eligible. All baseline echocardiograms were reported again. Participants underwent follow-up echocardiography. A paediatric cardiologist determined the diagnosis using the World Heart Federation criteria and assessed the severity of regurgitation and stenosis.

RESULTS

Ninety-eight participants were recruited (mean age, 17 years; median duration of follow-up, 7.5 years). Two other children had died from severe RHD. Fourteen of 20 (70%) definite RHD cases persisted or progressed, including four (20%) requiring valve surgery. Four (20%) definite RHD cases improved to borderline RHD and two (10%) to normal. Four of 17 (24%) borderline cases progressed to definite RHD (moderate: 2; severe: 2) and two (12%) improved to normal. Four of the 55 cases reclassified as normal at baseline progressed to borderline RHD. Cases with a follow-up interval >5 years were more likely to improve (37% vs 6%, p=0.03).

CONCLUSIONS

The natural history of screening-detected RHD is not benign. Most definite RHD cases persist and others may require surgery or succumb. Progression of borderline cases to severe RHD demonstrates the need for monitoring and individualised consideration of prophylaxis. Robust health system structures are needed for follow-up and delivery of secondary prophylaxis if RHD screening is to be scaled up.