Single-Pill, Triple Antihypertensive Therapy in Rural Sub-Saharan Africa: Preliminary Experience

INTRODUCTION

Worldwide, arterial hypertension is the foremost preventable and modifiable cardiovascular risk factor. In addition to lifestyle changes, recent international guidelines recommend single-pill, low-dose combinations as initial treatment strategy. We investigated whether this approach is feasible in a rural sub-Saharan Africa setting.

METHODS

Diagnosis of hypertension was established over three sets of blood pressure measurements, performed according to the European Society of Hypertension recommendations by trained personnel, using a validated, automated, oscillometric device OMRON M7 IT-HEM-7322-E. In 98 individuals with arterial hypertension, a once-daily, single-pill combination of olmesartan, amlodipine, and hydrochlorothiazide was prescribed at an appropriate dose. Patients were instructed on its administration and potential side effects and encouraged towards lifestyle modifications. The treatment regimen was adjusted, if needed, at each outpatient clinic scheduled after 4, 8, 12, and 16 weeks.

RESULTS

Seventy-nine patients (aged 61 [53-70] years; median and interquartile range) strictly adhered to the treatment schedule, while 19 individuals (70 [65-80] years) dropped out. Blood pressure was < 140/90 mmHg after 4 weeks in 44 (56%), after 8 weeks in 62 (78%), after 12 weeks in 69 (87%), and after 16 weeks in 74 (94%) participants. Excellent tolerance was reported.

CONCLUSIONS

These results provide real-life evidence that hypertension management with a once-daily, single-pill combination of olmesartan, amlodipine, and hydrochlorothiazide as initial treatment is feasible and effective also in a rural sub-Saharan setting. Single-pill combinations should be made available also in rural and remote areas in low- and middle-income countries as a reliable first-line treatment strategy.

Blood pressure screening in Mata Sector, a rural area of Rwanda

In rural sub-Saharan Africa, knowledge of non-communicable diseases such as high blood pressure (BP) is rather limited. This report provides information about a BP screening in Mata Sector, a rural region in Southern Province of Rwanda. Community-based, house-to-house screening was performed between February and July 2020 on more than 7000 inhabitants. The screening was conducted by a local team composed by 20 community health care workers, five community health care supervisors, and one nurse with hypertension surveillance training. BP and heart rate were recorded after 5 min of resting, using a validated automated oscillometric OMRON M6 IT-HEM-7322-E monitor with Intelli Wrap Cuff (HEM-FL31-E) technology. The mean of the second and third value was retained. BP was normal (<140/90 mm Hg) in 6340 (88%) and elevated in 863 (12%) participants with 95% of unawareness. Grade 1 (140-159/90-99 mm Hg) hypertensive BP readings were detected in 697 (81%), grade 2 (160-179/100-109 mm Hg) in 134 (16%), and grade 3 (≥180/≥110 mm Hg) in 32 (3.7%) individuals. The prevalence of hypertensive readings was significantly age-dependent. Additionally, a slightly greater proportion of participants with high BP (14% versus 11%) had a body mass index (BMI) ≥ 25.0 kg/m2. Also resting heart rate was higher in individuals with high BP (82 versus 77 beats/min). Although individuals identified with occasionally elevated BP values need further confirmatory measurements to establish the diagnosis of hypertension, these data suggest that high BP represents a noteworthy and preventable reason of concern within sub-Saharan Africa.

Community Health Worker-Led Cardiovascular Disease Risk Screening and Referral for Care and Further Management in Rural and Urban Communities in Rwanda

Cardiovascular disease (CVD) is a global health issue. Low- and middle-income countries (LMICs) are facing early CVD-related morbidity. Early diagnosis and treatment are an effective strategy to tackle CVD. The aim of this study was to assess the ability of community health workers (CHWs) to screen and identify persons with high risks of CVD in the communities, using a body mass index (BMI)-based CVD risk assessment tool, and to refer them to the health facility for care and follow-up. This was an action research study conducted in rural and urban communities, conveniently sampled in Rwanda. Five villages were randomly selected from each community, and one CHW per each selected village was identified and trained to conduct CVD risk screening using a BMI-based CVD risk screening tool. Each CHW was assigned to screen 100 fellow community members (CMs) for CVD risk and to refer those with CVD risk scores ≥10 (either moderate or high CVD risk) to a health facility for care and further management. Descriptive statistics with Pearson's chi-square test were used to assess any differences between rural and urban study participants vis-à-vis the key studied variables. Spearman's rank coefficient and Cohen's Kappa coefficient were mainly used to compare the CVD risk scoring from the CHWs with the CVD risk scoring from the nurses. Community members aged 35 to 74 years were included in the study. The participation rates were 99.6% and 99.4% in rural and urban communities, respectively, with female predominance (57.8% vs. 55.3% for rural and urban, p-value: 0.426). Of the participants screened, 7.4% had a high CVD risk (≥20%), with predominance in the rural community compared to the urban community (8.0% vs. 6.8%, p-value: 0.111). Furthermore, the prevalence of moderate or high CVD risk (≥10%) was higher in the rural community than in the urban community (26.7% vs. 21.1%, p-value: 0.111). There was a strong positive correlation between CHW-based CVD risk scoring and nurse-based CVD risk scoring in both rural and urban communities, 0.6215 (p-value < 0.001) vs. 0.7308 (p-value = 0.005). In regard to CVD risk characterization, the observed agreement to both the CHW-generated 10-year CVD risk assessment and the nurse-generated 10-year CVD risk assessment was characterized as "fair" in both rural and urban areas at 41.6% with the kappa statistic of 0.3275 (p-value < 001) and 43.2% with kappa statistic of 0.3229 (p-value =0.057), respectively. In Rwanda, CHWs can screen their fellow CMs for CVD risk and link those with high CVD risk to the healthcare facility for care and follow-up. CHWs could contribute to the prevention of CVDs through early diagnosis and early treatment at the bottom of the health system.

Perceived cardiovascular disease risk and tailored communication strategies among rural and urban community dwellers in Rwanda: a qualitative study

Background

In Rwanda, cardiovascular diseases (CVDs) are the third leading cause of death, and hence constitute an important public health issue. Worldwide, most CVDs are due to lifestyle and preventable risk factors. Prevention interventions are based on risk factors for CVD risk, yet the outcome of such interventions might be limited by the lack of awareness or misconception of CVD risk. This study aimed to explore how rural and urban population groups in Rwanda perceive CVD risk and tailor communication strategies for estimated total cardiovascular risk.

Methods

An exploratory qualitative study design was applied using focus group discussions to collect data from rural and urban community dwellers. In total, 65 community members took part in this study. Thematic analysis with Atlas ti 7.5.18 was used and the main findings for each theme were reported as a narrative summary.

Results

Participants thought that CVD risk is due to either financial stress, psychosocial stress, substance abuse, noise pollution, unhealthy diets, diabetes or overworking. Participants did not understand CVD risk presented in a quantitative format, but preferred qualitative formats or colours to represent low, moderate and high CVD risk through in-person communication. Participants preferred to be screened for CVD risk by community health workers using mobile health technology.

Conclusion

Rural and urban community members in Rwanda are aware of what could potentially put them at CVD risk in their respective local communities. Community health workers are preferred by local communities for CVD risk screening. Quantitative formats to present the total CVD risk appear inappropriate to the Rwandan population and qualitative formats are therefore advisable. Thus, operational research on the use of qualitative formats to communicate CVD risk is recommended to improve decision-making on CVD risk communication in the context of Rwanda.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-022-13330-6.

High rates of undiagnosed and uncontrolled hypertension upon a screening campaign in rural Rwanda: a cross-sectional study

Background

Hypertension remains the major risk factor for cardiovascular diseases (CVDs) worldwide with a prevalence and mortality in low- and middle-income countries (LMICs) among the highest. The early detection of hypertension risk factors is a crucial pillar for CVD prevention.

Design and method

This cross-sectional study included 4284 subjects, mean age 46 ± 16SD, 56.4% females and mean BMI 26.6 ± 3.7 SD. Data were collected through a screening campaign in rural area of Kirehe District, Eastern of Rwanda, with the objective to characterize and examine the prevalence of elevated blood pressure (BP) and other CVD risk factors. An adapted tool from the World Health Organization STEPwise Approach was used for data collection. Elevated BP was defined as ≥ 140/90 mm/Hg and elevated blood glucose as blood glucose ≥ 100 mg/dL after a 6-h fast.

Results

Of the sampled population, 21.2% (n = 910) had an elevated BP at screening; BP was elevated among individuals not previously known to have HTN in 18.7% (n = 752). Among individuals with a prior diagnosis of HTN, 62.2% (n = 158 of 254) BP was uncontrolled. Age, weight, smoking, alcohol history and waist circumference were associated with BP in both univariate analyses and multivariate analysis.

Conclusion

High rates of elevated BP identified through a health screening campaign in this Rwandan district were surprising given the rural characteristics of the district and relatively low population age. These data highlight the need to implement an adequate strategy for the prevention, diagnosis, and control of HTN that includes rural areas of Rwanda as part of a multicomponent strategy for CVD prevention.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12872-022-02606-9.

Using Citizen Science Within an Integrated Knowledge Translation (IKT) Approach to Explore Cardiovascular Disease Risk Perception in Rwanda

Background

Collaborative approaches to generating knowledge between knowledge users (KUs) and researchers as a means of enhancing evidence-informed decision making have been gaining ground over the last few years. The principal study targeted rural and urban communities within the catchment areas of Cyanika health centre (Burera district, Northern Province) and Kacyiru health centre (Gasabo district, in City of Kigali), respectively to understand perceptions and preferences of communication with respect to cardiovascular disease (CVD) risk in Rwanda. This paper describes the integration of citizen science within an integrated knowledge translation (IKT) approach for this study.

Methods

The citizen science approach included deliberate, selective and targeted engagement of KUs at various steps throughout the study. It incorporated national and district levels stakeholders, primary health care stakeholders, local community leaders and influencers, and local community members (selected and trained to be termed citizen scientists) in the process of implementation. Data for this paper included minutes, reports and notes from meetings and workshops which were perused to report the immediate outcomes and challenges of citizen science within an IKT approach for a study such as described for Rwanda.

Results

As a result of a deliberate IKT strategy, key national stakeholders attended and contributed to all phases of citizen science implementation. Project-based and relationship-based immediate outcomes were documented. In line with local community health issues reported by the citizen scientists, the local community stakeholders pledged home grown solutions. These included enhancement of compliance to implement the “kitchen garden per household” policy, teaching local residents on preparation of healthy diet from locally available food items, organizing collective physical activity, fighting against locally made substandard beverages and teaching local residents on CVD (risk factors). As an indicator of the probable uptake of research evidence, district officials appreciated citizen scientists’ work and decided to consider presented results in their next fiscal year action plan.

Conclusion

Citizen science proved to be an important strategy for research co-production in Rwanda. While this strategy falls within the remit of a larger IKT approach it focuses on the role and ownership of research by local community residents. This study demonstrated that to improve the relevance and impact of research in local community a deliberate IKT approach that incorporates citizen science can be invaluable.

Implementation outcomes of national decentralization of integrated outpatient services for severe non-communicable diseases to district hospitals in Rwanda

OBJECTIVES

Effective coverage of non-communicable disease (NCD) care in sub-Saharan Africa remains low, with the majority of services still largely restricted to central referral centres. Between 2015 and 2017, the Rwandan Ministry of Health implemented a strategy to decentralise outpatient care for severe chronic NCDs, including type 1 diabetes, heart failure and severe hypertension, to rural first-level hospitals. This study describes the facility-level implementation outcomes of this strategy.

METHODS

In 2014, the Ministry of Health trained two nurses in each of the country's 42 first-level hospitals to implement and deliver nurse-led, integrated, outpatient NCD clinics, which focused on severe NCDs. Post-intervention evaluation occurred via repeated cross-sectional surveys, informal interviews and routinely collected clinical data over two rounds of visits in 2015 and 2017. Implementation outcomes included fidelity, feasibility and penetration.

RESULTS

By 2017, all NCD clinics were staffed by at least one NCD-trained nurse. Among the approximately 27 000 nationally enrolled patients, hypertension was the most common diagnosis (70%), followed by type 2 diabetes (19%), chronic respiratory disease (5%), type 1 diabetes (4%) and heart failure (2%). With the exception of warfarin and beta-blockers, national essential medicines were available at more than 70% of facilities. Clinicians adhered to clinical protocols at approximately 70% agreement with evaluators.

CONCLUSION

The government of Rwanda was able to scale a nurse-led outpatient NCD programme to all first-level hospitals with good fidelity, feasibility and penetration as to expand access to care for severe NCDs.

Epidemiology of paediatric injuries in Rwanda using a prospective trauma registry

BACKGROUND

Child survival initiatives historically prioritized efforts to reduce child morbidity and mortality from infectious diseases and maternal conditions. Little attention has been devoted to paediatric injuries in resource-limited settings. This study aimed to evaluate the demographics and outcomes of paediatric injury in a sub-Saharan African country in an effort to improve prevention and treatment.

METHODS

A prospective trauma registry was established at the two university teaching campuses of the University of Rwanda to record systematically patient demographics, prehospital care, initial physiology and patient outcomes from May 2011 to July 2015. Univariable analysis was performed for demographic characteristics, injury mechanisms, geographical location and outcomes. Multivariable analysis was performed for mortality estimates.

RESULTS

Of 11 036 patients in the registry, 3010 (27·3 per cent) were under 18 years of age. Paediatric patients were predominantly boys (69·9 per cent) and the median age was 8 years. The mortality rate was 4·8 per cent. Falls were the most common injury (45·3 per cent), followed by road traffic accidents (30·9 per cent), burns (10·7 per cent) and blunt force/assault (7·5 per cent). Patients treated in the capital city, Kigali, had a higher incidence of head injury (7·6 per cent versus 2·0 per cent in a rural town, P < 0·001; odds ratio (OR) 4·08, 95 per cent c.i. 2·61 to 6·38) and a higher overall injury-related mortality rate (adjusted OR 3·00, 1·50 to 6·01; P = 0·019). Pedestrians had higher overall injury-related mortality compared with other road users (adjusted OR 3·26, 1·37 to 7·73; P = 0·007).

CONCLUSION

Paediatric injury is a significant contributor to morbidity and mortality. Delineating trauma demographics is important when planning resource utilization and capacity-building efforts to address paediatric injury in low-resource settings and identify vulnerable populations.

10-Year Heart Failure Outcomes From Nurse-Driven Clinics in Rural Sub-Saharan Africa

Nurse-led delivery care models have the potential to address the significant burden of heart failure in sub-Saharan Africa. Starting in 2006, the Rwandan Ministry of Health, supported by Inshuti Mu Buzima (Partners In Health-Rwanda), decentralized heart failure diagnosis and care delivery in the context of advanced nurse-led integrated noncommunicable clinics at rural district hospitals. Here, the authors describe the first medium-term survival outcomes from the district level in rural sub-Saharan Africa based on their 10-year experience providing care in rural Rwanda. Kaplan-Meier methods were used to determine median time to event for: 1) composite event of known death from any cause, lost to follow-up, or transfer to estimate worst-case mortality; and 2) known death only. Five-year event-free rates were 41.7% for the composite outcome and 64.3% for known death. While death rates are encouraging, efforts to reduce loss to follow-up are needed.

Road map for leadership and management in public health: a case study on noncommunicable diseases program managers' training in Rwanda

Ministries of Health (MoHs) and health organizations are compelled to work across sectors and build coalitions, strengthening health systems to abate the rise of noncommunicable diseases (NCDs). A critical element of NCD prevention and control involves significant and difficult changes in attitudes, policies and protective behavior at the population level. The population-level impact of NCD interventions depends on the strength of the health system that delivers them. In particular, low-resource settings are exploring efficiencies and linkages to existing systems or partnerships in ways that may alleviate redundancies and high delivery costs. These entail complex operational challenges, and can only be spearheaded by a competent and passionate workforce. There is a critical need to develop and strengthen the management and leadership skills of public health professionals so that they can take on the unique challenges of NCD prevention and control. An added component must include a shift from the traditional clinical approach to a community-based effort, focusing heavily on health education and community norm change. Strengthening the work-force capacity of program managers at MoHs and other implementing institutions is key to capturing, analyzing, advocating and communicating information and will, in turn, reinforce the scale-up of interventions fostering a robust health system. This paper summarizes the best practices and lessons learned from the NCD Program Managers short course conducted by the US Centers for Disease Control and Prevention (CDC) in December, 2016 in Rwanda.

Understanding the Etiology of Heart Failure Among the Rural Poor in Sub-Saharan Africa: A 10-Year Experience From District Hospitals in Rwanda

BACKGROUND

Heart failure is a significant cause of morbidity and mortality in sub-Saharan Africa. Our understanding of the heart failure burden in this region has been limited mainly to registries from urban referral centers. Starting in 2006, a nurse-driven strategy was initiated to provide echocardiography and decentralized heart failure care within noncommunicable disease (NCD) clinics in rural district hospitals in Rwanda.

METHODS AND RESULTS

We conducted a retrospective review of patients with cardiologist-confirmed heart failure treated at 3 district hospital NCD clinics in Rwanda from 2006 to 2017 to determine patient clinical characteristics and disease distribution. Over 10 years, 719 patients with confirmed heart failure were identified. Median age was 27 years overall, and 42 years in adults. Thirty-six percent were children (age <18 years), 68% were female, and 78% of adults were farmers. At entry, 39% were in New York Heart Association functional class III-IV. Among children, congenital heart disease (52%) and rheumatic heart disease (36%) were most common. In adults, cardiomyopathy (40%), rheumatic heart disease (27%), and hypertensive heart disease (13%) were most common. No patients were diagnosed with ischemic cardiomyopathy.

CONCLUSIONS

The results of the largest single-country heart failure cohort from rural sub-Saharan Africa demonstrate a persistent burden of rheumatic disease and nonischemic cardiomyopathies.