Fixed-dose combination pharmacologic therapy to improve hypertension control worldwide: Clinical perspective and policy implications

Trends of Antihypertensive Prescription Among US Adults From 2010 to 2019 and Changes Following Treatment Guidelines: Analysis of Multicenter Electronic Health Records

BACKGROUND

Guidelines for the use of antihypertensives changed in 2014 and 2017. To understand the effect of these guidelines, we examined trends in antihypertensive prescriptions in the United States from 2010 to 2019 using a repeated cross-sectional design.

METHODS AND RESULTS

Using electronic health records from 15 health care institutions for adults (20-85 years old) who had ≥1 antihypertensive prescription, we assessed whether (1) prescriptions of beta blockers decreased after the 2014 Eighth Joint National Committee (JNC 8) report discouraged use for first-line treatment, (2) prescriptions for calcium channel blockers and thiazide diuretics increased among Black patients after the JNC 8 report encouraged use as first-line therapy, and (3) prescriptions for dual therapy and fixed-dose combination among patients with blood pressure ≥140/90 mm Hg increased after recommendations in the 2017 Hypertension Clinical Practice Guidelines. The study included 1 074 314 patients with 2 133 158 prescription episodes. After publication of the JNC 8 report, prescriptions for beta blockers decreased (3% lower in 2018-2019 compared to 2010-2014), and calcium channel blockers increased among Black patients (20% higher in 2015-2017 and 41% higher in 2018-2019, compared to 2010-2014), in accordance with guideline recommendations. However, contrary to guidelines, dual therapy and fixed-dose combination decreased after publication of the 2017 Hypertension Clinical Practice Guidelines (9% and 11% decrease in 2018-2019 for dual therapy and fixed-dose combination, respectively, compared to 2015-2017), and thiazide diuretics decreased among Black patients after the JNC 8 report (6% lower in 2018-2019 compared to 2010-2014).

CONCLUSIONS

Adherence to guidelines on prescribing antihypertensive medication was inconsistent, presenting an opportunity for interventions to achieve better blood pressure control in the US population.

Single-pill combination for treatment of hypertension: Just a matter of practicality or is there a real clinical benefit?

Elevated blood pressure (BP) is the largest contributor to the incident cardiovascular disease worldwide. Despite explicit guideline recommendations for the diagnosis and management of hypertension, a large proportion of patients remain undiagnosed, untreated, or treated but uncontrolled. Inadequate BP control is associated with many complex factors including patient preference, physician's inertia, health systems disparities, and poor adherence to prescribed antihypertensive drug treatment. The primary driver for reduced cardiovascular morbidity and mortality is lowering of BP ''per se'' and not class effects of specific pharmacotherapies. The recent ESH guidelines recommend the use of four major classes of drugs including renin-angiotensin-aldosterone system (RAS) blockers (angiotensin receptor blockers (ARB) or angiotensin-converting enzyme inhibitors (ACEi)), calcium channel blockers (CCB), thiazide and thiazide-like diuretics, and betablockers. Initiation of treatment for hypertension with a two-drug regimen, preferably in a single pill combination (SPC), is recommended for most patients. Preferred combinations should comprise a RAS blocker (either an ACEi or an ARB) with a CCB or thiazide/thiazide-like diuretic. These strategies are supported by robust evidence that combination therapy produces greater BP reductions than monotherapy, reduces side effects of the individual components, improves therapeutic adherence and long-term persistence on treatment, and permits achievement of earlier BP control.

HEARTS in the Americas: Targeting Health System Change to Improve Population Hypertension Control

PURPOSE OF REVIEW

HEARTS in the Americas is the regional adaptation of Global Hearts, the World Health Organization initiative for cardiovascular disease (CVD) prevention and control. Its overarching goal is to drive health services to change managerial and clinical practice in primary care settings to improve hypertension control and CVD risk management. This review describes the HEARTS in the Americas initiative. First, the regional epidemiological situation of CVD mortality and population hypertension control trends are summarized; then the rationale for its main intervention components: the primary care-oriented management system and the HEARTS Clinical Pathway are described. Finally, the key factors for accelerating the expansion of HEARTS are examined: medicines, team-based care, and a system for monitoring and evaluation.

RECENT FINDINGS

Thus far, 33 countries in Latin America and the Caribbean have committed to integrating this program across their primary healthcare network by 2025. The increase in hypertension coverage and control in primary health care settings compared with the traditional model is promising and confirms that the interventions under the HEARTS umbrella are feasible and acceptable to communities, patients, providers, decision-makers, and funders. This review highlights some cases of successful implementation. Scaling up effective treatment for hypertension and optimization of CVD risk management is a pragmatic way to accelerate the reduction of CVD mortality while strengthening primary healthcare systems to respond effectively, with quality, and equitably, to the challenge of non-communicable diseases, not only in low-middle income countries but in all communities globally.

[HEARTS in the Americas: targeting health system change to improve population hypertension controlHEARTS nas Américas: impulsionar mudanças no sistema de saúde para melhorar o controle da hipertensão arterial na população]

Purpose of review

HEARTS in the Americas is the regional adaptation of Global Hearts, the World Health Organization initiative for cardiovascular disease (CVD) prevention and control. Its overarching goal is to drive health services to change managerial and clinical practice in primary care settings to improve hypertension control and CVD risk management. This review describes the HEARTS in the Americas initiative. First, the regional epidemiological situation of CVD mortality and population hypertension control trends are summarized; then the rationale for its main intervention components: the primary care-oriented management system and the HEARTS Clinical Pathway are described. Finally, the key factors for accelerating the expansion of HEARTS are examined: medicines, team-based care, and a system for monitoring and evaluation.

Recent findings

Thus far, 33 countries in Latin America and the Caribbean have committed to integrating this program across their primary healthcare network by 2025. The increase in hypertension coverage and control in primary health care settings compared with the traditional model is promising and confirms that the interventions under the HEARTS umbrella are feasible and acceptable to communities, patients, providers, decision-makers, and funders. This review highlights some cases of successful implementation.

Summary

Scaling up effective treatment for hypertension and optimization of CVD risk management is a pragmatic way to accelerate the reduction of CVD mortality while strengthening primary healthcare systems to respond effectively, with quality, and equitably, to the challenge of non-communicable diseases, not only in low-middle income countries but in all communities globally.

The Rationale for Using Fixed-Dose Combination Therapy in the Management of Hypertension in Colombia: A Narrative Review

Hypertension is a major risk factor for cardiovascular disease and the leading cause of death in Colombia. While the rate of hypertension awareness in Colombia is generally high, rates of treatment initiation, adherence, and blood pressure (BP) control are suboptimal. Major international hypertension guidelines recommend starting treatment with a combination of antihypertensive agents, and the use of a single-pill combination (SPC) to maximize adherence. In contrast, Colombian hypertension guidelines recommend starting treatment with diuretic monotherapy in most patients, and only initiating combination therapy in those with BP > 160/100 mmHg. Therefore, the aim of the current narrative review is to examine the rationale for using SPCs to treat hypertension in Colombia, in the context of the major issues for BP control there. There is evidence of widespread therapeutic inertia in hypertension management, particularly in primary care, in Colombia. Moreover, combination therapy, angiotensin-converting enzyme inhibitors, and long-acting calcium channel blockers, which are internationally recommended as first-line drug therapies, are underutilized there. Adherence to antihypertensive therapy is low in Colombia and may be enhanced by use of SPCs as well as better patient education and follow-up. While there are promising national initiatives to improve BP management, more needs to be done by individual physicians. Antihypertensive SPCs are available on the national essential medicines list and may help to overcome some of the problems with suboptimal adherence, therapeutic inertia, and low rates of BP control that contribute to the high cardiovascular death rate in Colombia.

Effectiveness of perindopril/amlodipine fixed-dose combination in the treatment of hypertension: a systematic review

Background: Uncontrolled blood pressure is a major risk factor for cardiovascular diseases. Fixed-dose combination (FDC) therapy offers a promising approach to addressing this challenge by providing a convenient single-tablet solution that enhances the effectiveness of blood pressure control. In our systematic review, we assess the effectiveness of perindopril/amlodipine FDC in managing blood pressure. Methods: We conducted a comprehensive search across four primary electronic databases, namely, PubMed, Virtual Health Library (VHL), Global Health Library (GHL), and Google Scholar, as of 8 February 2022. Additionally, we performed a manual search to find relevant articles. The quality of the selected articles was evaluated using the Study Quality Assessment Tools (SQAT) checklist from the National Institute of Health and the ROB2 tool from Cochrane. Results: Our systematic review included 17 eligible articles. The findings show that the use of perindopril/amlodipine FDC significantly lowers blood pressure and enhances the quality of blood pressure control. Compared to the comparison group, the perindopril/amlodipine combination tablet resulted in a higher rate of blood pressure response and normalization. Importantly, perindopril/amlodipine FDC contributes to improved patient adherence with minimal side effects. However, studies conducted to date have not provided assessments of the cost-effectiveness of perindopril/amlodipine FDC. Conclusion: In summary, our analysis confirms the effectiveness of perindopril/amlodipine FDC in lowering blood pressure, with combination therapy outperforming monotherapy and placebo. Although mild adverse reactions were observed in a small subset of participants, cost-effectiveness assessments for this treatment remain lacking in the literature.

Fixed-Dose Combination Formulations in Solid Oral Drug Therapy: Advantages, Limitations, and Design Features

Whilst monotherapy is traditionally the preferred treatment starting point for chronic conditions such as hypertension and diabetes, other diseases require the use of multiple drugs (polytherapy) from the onset of treatment (e.g., human immunodeficiency virus acquired immunodeficiency syndrome, tuberculosis, and malaria). Successful treatment of these chronic conditions is sometimes hampered by patient non-adherence to polytherapy. The options available for polytherapy are either the sequential addition of individual drug products to deliver an effective multi-drug regimen or the use of a single fixed-dose combination (FDC) therapy product. This article intends to critically review the use of FDC drug therapy and provide an insight into FDC products which are already commercially available. Shortcomings of FDC formulations are discussed from multiple perspectives and research gaps are identified. Moreover, an overview of fundamental formulation considerations is provided to aid formulation scientists in the design and development of new FDC products.

Implementing integrated hypertension and diabetes management using the World Health Organization's HEARTS model: protocol for a pilot study in the Guatemalan national primary care system

BACKGROUND

The HEARTS technical package was developed by the World Health Organization to address the implementation gap in cardiovascular disease prevention in low- and middle-income countries. Guatemala is a middle-income country that is currently implementing HEARTS. National authorities in Guatemala are interested in exploring how hypertension and diabetes management can be integrated in HEARTS implementation. The objective of this study is to conduct a feasibility and acceptability pilot trial of integrated hypertension and diabetes management based on HEARTS in the publicly funded primary care system in Guatemala.

METHODS

A single-arm pilot trial for 6 months will be carried out in 11 Ministry of Health primary care facilities starting in September 2023. A planned sample of 100 adult patients diagnosed with diabetes (n = 45), hypertension (n = 45), or both (n = 10) will be enrolled. The intervention will consist of HEARTS-aligned components: Training health workers on healthy-lifestyle counseling and evidence-based treatment protocols, strengthening access to medications and diagnostics, training on risk-based cardiovascular disease management, team-based care and task sharing, and systems monitoring and feedback, including implementation of a facility-based electronic monitoring tool at the individual level. Co-primary outcomes of feasibility and acceptability will be assessed using an explanatory sequential mixed-methods design. Secondary outcomes include clinical effectiveness (treatment with medication, glycemic control, and blood pressure control), key implementation outcomes (adoption, fidelity, usability, and sustainability), and patient-reported outcome measures (diabetes distress, disability, and treatment burden). Using an implementation mapping approach, a Technical Advisory Committee will develop implementation strategies for subsequent scale-up planning.

DISCUSSION

This trial will produce evidence on implementing HEARTS-aligned hypertension and diabetes care in the MOH primary care system in Guatemala. Results also will inform future HEARTS projects in Guatemala and other low- and middle-income countries.

TRIAL REGISTRATION

ClinicalTrials.gov ID NCT06080451. The trial was prospectively registered on October 12, 2023.

Screening and validation of double allele-specific binding F-primers for the measurement of antihypertensive pharmacogenomics

Objective

Previous studies have proposed that genetic polymorphisms of CYP2D6*10, ADRB1, NPPA, CYP3A5*3, ACE, CYP2C9*3, and AGTR1 are involved in antihypertensive pharmacogenomics. The purpose of this study is to develop an amplification analysis using double allele-specific (AS) binding primers for accurate measurement of antihypertensive pharmacogenomics.

Methods

To establish a quadruplex quantitative PCR (qPCR) analysis for genotyping of CYP2D6*10, ADRB1 (1165 G>C), NPPA (2238 T>C) and CYP3A5*3, and a triplex qPCR analysis for genotyping of ACE (I/D), CYP2C9*3 and AGTR1 (1166 A>C), mismatch AS F-primers were screened by detection of plasmid/gDNA, and were validated by agreement analysis/reproducibility evaluation, in which the ΔCq (differences in threshold cycles between the wild-type F-primer-based amplification assay and the mutant-type F-primer-based amplification assay) was employed to determine genotypes.

Results

Seven pairs of primers were successfully selected through three rounds of F-primers screening. Except for ADRB1, the robustness assessment showed the amplification efficiency ranging from 0.9 to 1.1. In agreement analysis, two specimens in the training set (n = 203) were defined by the triplex analysis rather than NGS as heterozygotes for ACE, which was evidenced by gel electrophoresis. Reproducibility evaluation demonstrated that the coefficient of variation (CV) was <5%.

Conclusion

Multiplex amplification analysis using screened AS binding primers is a simple, reliable, and accurate tool to guide drug delivery in antihypertensive personalized treatment.

Evaluating the hypertension care cascade in middle-aged and older adults in The Gambia: findings from a nationwide survey

Background

Hypertension is a major public health problem in sub-Saharan Africa with poor treatment coverage and high case-fatality rates. This requires assessment of healthcare performance to identify areas where intervention is most needed. To identify areas where health resources should be most efficiently targeted, we assessed the hypertension care cascade i.e., loss and retention across the various stages of care, in Gambian adults aged 35 years and above.

Methods

This study was embedded within the nationally representative 2019 Gambia National Eye Health Survey of adults ≥35 years. We constructed a hypertension care cascade with four categories: prevalence of hypertension (defined as systolic blood pressure ≥140 mmHg and/or diastolic blood pressure ≥90 mmHg, and/or current use of medication prescribed for hypertension); those aware of their diagnosis; those treated; and those with a controlled blood pressure (defined as blood pressure <140/90 mmHg). Analyses were age- and sex-standardised to the population structure of The Gambia. Logistic regression was used to assess the socio-demographic factors associated with prevalence, awareness, treatment and control of hypertension.

Findings

Of 9171 participants with data for blood pressure, the prevalence of hypertension was 47.0%. Among people with hypertension, the prevalence of awareness was 54.7%, the prevalence of hypertension treatment was 32.5%, and prevalence of control was 10.0% with little difference between urban and rural residence. The cascade of care performance was better in women. However, there was no difference in achieving blood pressure control between men and women who were receiving treatment. Female sex, older age and higher body mass index were associated with higher hypertension awareness whilst having an occupation compared to being unemployed was associated with higher odds of being treated. Patients in the underweight category had higher odds of achieving blood pressure control.

Interpretation

There is a high prevalence of hypertension and low performance of the health care system that impact on the hypertension care cascade among middle-aged and older adults in The Gambia. Addressing the full cascade will be paramount especially in reducing the mounting prevalence and improving diagnosis of patients with hypertension, where the greatest dividends will be gained.

Funding

The Queen Elizabeth Diamond Jubilee Trust, Wellcome Trust.

Moving toward improved access to medicines and health technologies for cardiovascular disease. Rev Panam Salud Publica 2023;47:e93. [PMID: 37324199 PMCID: PMC10261561 DOI: 10.26633/rpsp.2023.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0]

The objectives of this article are to describe the interventions carried out by the Strategic Fund of the Pan American Health Organization to facilitate access to and availability of antihypertensive medicines and devices for measuring blood pressure across the Region of the Americas as part of the HEARTS initiative, and to present the preliminary results of price analyses of antihypertensive medicines. The study methodology included a review of reports made by the Strategic Fund between 2019 and 2020, an evaluation of modalities of procurement, a review of the public procurement databases for five antihypertensive medicines, and a comparison with the price obtained by the Strategic Fund. Differences in price ranging from 20% to 99% were identified, indicating significant opportunities for savings. The study also presents interprogrammatic actions that can support the HEARTS initiative, such as the inclusion of antihypertensive medicines recommended by the World Health Organization, consolidation of regional demand and competitively-priced long-term agreements to manage the procurement of quality generic products, and the definition of technical specifications and regulatory requirements to support the procurement of devices to measure blood pressure. This mechanism will enable Member States to reduce their costs significantly, while extending treatment and diagnostic coverage to more people.

HEARTS in the Americas clinical pathway. Strengthening the decision support system to improve hypertension and cardiovascular disease risk management in primary care settings

Background

HEARTS in the Americas is the regional adaptation of the WHO Global HEARTS Initiative. It is implemented in 24 countries and over 2,000 primary healthcare facilities. This paper describes the results of a multicomponent, stepwise, quality improvement intervention designed by the HEARTS in the Americas to support advances in hypertension treatment protocols and evolution towards the Clinical Pathway.

Methods

The quality improvement intervention comprised: 1) the use of the appraisal checklist to evaluate the current hypertension treatment protocols, 2) a peer-to-peer review and consensus process to resolve discrepancies, 3) a proposal of a clinical pathway to be considered by the countries, and 4) a process of review, adopt/adapt, consensus and approval of the clinical pathway by the national HEARTS protocol committee. A year later, 16 participants countries (10 and 6 from each cohort, respectively) were included in a second evaluation using the HEARTS appraisal checklist. We used the median and interquartile scores range and the percentages of the maximum possible total score for each domain as a performance measure to compare the results pre and post-intervention.

Results

Among the eleven protocols from the ten countries in the first cohort, the baseline assessment achieved a median overall score of 22 points (ICR 18 -23.5; 65% yield). After the intervention, the overall score reached a median of 31.5 (ICR 28.5 -31.5; 93% yield). The second cohort of countries developed seven new clinical pathways with a median score of 31.5 (ICR 31.5 -32.5; 93% yield). The intervention was effective in three domains: 1. implementation (clinical follow-up intervals, frequency of drug refills, routine repeat blood pressure measurement when the first reading is off-target, and a straightforward course of action). 2. treatment (grouping all medications in a single daily intake and using a combination of two antihypertensive medications for all patients in the first treatment step upon the initial diagnosis of hypertension) and 3. management of cardiovascular risk (lower BP thresholds and targets based on CVD risk level, and the use of aspirin and statins in high-risk patients).

Conclusion

This study confirms that this intervention was feasible, acceptable, and instrumental in achieving progress in all countries and all three domains of improvement: implementation, blood pressure treatment, and cardiovascular risk management. It also highlights the challenges that prevent a more rapid expansion of HEARTS in the Americas and confirms that the main barriers are in the organization of health services: drug titration by non-physician health workers, the lack of long-acting antihypertensive medications, lack of availability of fixed-doses combination in a single pill and cannot use high-intensity statins in patients with established cardiovascular diseases. Adopting and implementing the HEARTS Clinical Pathway can improve the efficiency and effectiveness of hypertension and cardiovascular disease risk management programs.

Medication adherence with fixed-dose versus free-equivalent combination therapies: Systematic review and meta-analysis

Objective: We conducted a large-scale meta-analysis and subgroup analysis to compare the effect of fixed-dose combination (FDC) therapy with that of free-equivalent combination (FEC) therapy on medication adherence. Methods: Studies published in Web of Science, PubMed, Cochrane Library, ScienceDirect, and Embase up to May 2022 were identified according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The primary assessed outcomes were the medication possession ratio (MPR) and proportion of days covered (PDC). We investigated the probability of being adherent to the prescribed treatment (MPR or PDC ≥80%) or the average estimate of these two parameters. Studies reporting such results were included in this meta-analysis. The summary measures were reported as the risk ratio (RR) and the weighted mean difference (MD) with 95% of confidence interval (CI) using the random-effects model of DerSimonian and Laird. The quality of the cohort studies was assessed using the Newcastle-Ottawa scale. Results: Of the 1,814 screened studies, 61 met the predefined inclusion criteria. The meta-analysis of the results showed that compared to FEC, FDC significantly improved the medication compliance of patients by 1.29 times (95% CI:1.23-1.35, p < 0.00001). I² of 99% represent high heterogeneity across studies. The mean difference in medication adherence between FDC and FEC was 0.10 (95% CI: 0.06-0.14, p < 0.00001) with an I² estimate of 100%. Subgroup analyses were performed for studies that reported adherence outcomes according to disease type, period of evaluation and compliance indicators. A sensitivity analysis was conducted to exclude the results of low-quality studies, as well as studies in which there was ambiguity in the method of calculating the estimator. Conclusion: Analysis of the assessed parameters for the intention-to-treat and subgroup populations suggests that FDC can improve adherence to treatment and its advantages over FEC may increase over time. Further research is needed to better understand how medical conditions affect the impact of reduced pill burden on adherence, particularly in diseases other than cardiovascular disease and type 2 diabetes mellitus.

Recent Developments in Drug Targets and Combination Therapy for the Clinical Management of Hypertension

Raised blood pressure is the most common complication worldwide that may lead to atherosclerosis and ischemic heart disease. Unhealthy lifestyles, smoking, alcohol consumption, junk food, and genetic disorders are some of the causes of hypertension. To treat this condition, numerous antihypertensive medications are available, either alone or in combination, that work via various mechanisms of action. Combinational therapy provides a certain advantage over monotherapy in the sense that it acts in multi mechanism mode and minimal drug amount is required to elicit the desired therapeutic effect. Such therapy is given to patients with systolic blood pressure greater than 20 mmHg and/or diastolic blood pressure exceeding 10 mmHg beyond the normal range, as well as those suffering from severe cardiovascular disease. The selection of antihypertensive medications, such as calcium channel blockers, angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and low-dose diuretics, hinges on their ability to manage blood pressure effectively and reduce cardiovascular disease risks. This review provides insights into the diverse monotherapy and combination therapy approaches used for elevated blood pressure management. In addition, it offers an analysis of combination therapy versus monotherapy and discusses the current status of these therapies, from researchbased findings to clinical trials.

[Integrating hypertension and diabetes management in primary health care settings: HEARTS as a toolIntegrando o manejo da hipertensão e do diabetes na atenção primária à saúde: uso do HEARTS como instrumento]

Hypertension and diabetes are modifiable cardiovascular disease (CVD) risk factors that contribute to nearly one-third of all deaths in the Americas Region each year (2.3 million deaths). Despite advances in the detection and clinical management of hypertension and diabetes, there are substantial gaps in their implementation globally and in the Region. The considerable overlap in risk factors, prognosis, and treatment of hypertension and diabetes creates a unique opportunity for a unified implementation model for management at the population level. This report highlights one such high-profile effort, the Pan American Health Organization's "HEARTS in the Americas" program, based on the World Health Organization's HEARTS Technical Package for Cardiovascular Disease Management in Primary Health Care. The HEARTS program aims to improve the implementation of preventive CVD care in primary health systems using six evidence-based, pragmatic components: Healthy-lifestyle counseling, Evidence-based protocols, Access to essential medicines and technology, Risk-based CVD management, Team-based care, and Systems for monitoring. To date, HEARTS implementation projects have focused primarily on hypertension given that it is the leading modifiable CVD risk factor and can be treated cost-effectively. The objective of this report is to describe opportunities for integration of diabetes clinical care and policy within the HEARTS hypertension framework. A substantial global burden of disease could be averted with integrated primary care management of these conditions. Thus, there is an urgency in applying lessons from HEARTS to close these implementation gaps and improve the integrated detection, treatment, and control of diabetes and hypertension.

HEARTS en las Américas: innovaciones para mejorar el manejo de la hipertensión y del riesgo cardiovascular en la atención primaria

La Iniciativa Mundial HEARTS. es la iniciativa emblemática de la Organización Mundial de la Salud para reducir la carga de las enfermedades cardiovasculares, la principal causa de muerte y discapacidad en todo el mundo. La Iniciativa HEARTS en las Américas es la adaptación regional que propone usar HEARTS como modelo para el manejo del riesgo de enfermedades cardiovasculares, incluida la hipertensión, y la diabetes en la atención primaria de salud en la Región de las Américas para el año 2025. Esta iniciativa está iniciando su sexto año de aplicación y ya incluye a 22 países y 1 380 centros de atención primaria de salud. Este informe tiene tres objetivos. En primer lugar, describir cómo surgió la Iniciativa HEARTS en las Américas y cuáles son sus principales elementos. En segundo lugar, resumir las principales innovaciones logradas para catalizar la iniciativa y mantener su aplicación. Entre estas innovaciones se encuentran: a) la introducción de factores impulsores del control de la hipertensión; b) el desarrollo de una vía clínica integral y práctica; c) la elaboración de una estrategia para mejorar la precisión de la medición de la presión arterial; d) la creación de un marco de seguimiento y evaluación; y e) la elaboración de un conjunto estandarizado de recursos de capacitación y formación. En tercer lugar, en este informe se examinan las futuras prioridades de la iniciativa. El objetivo de poner en marcha estas soluciones innovadoras y pragmáticas es crear un sistema de salud más efectivo y trasladar el enfoque de los programas cardiovasculares y de hipertensión del nivel de atención altamente especializada a la atención primaria de salud. Además, HEARTS en las Américas puede servir como modelo para unas prácticas más integrales, efectivas y sostenibles en la prevención y el tratamiento de las enfermedades no transmisibles.

Avanzando para mejorar el acceso a los medicamentos y tecnologías sanitarias para las enfermedades cardiovasculares

Los objetivos del presente artículo son describir las intervenciones realizadas por el Fondo Estratégico de Organización Panamericana de la Salud, para facilitar el acceso y disponibilidad de medicamentos antihipertensivos y dispositivos para la medición de la presión arterial a los países de la Región de las Américas en apoyo a la implementación de la Iniciativa HEARTS; y presentar los resultados preliminares de los análisis de los precios de los medicamentos antihipertensivos.

La metodología del estudio incluyó la revisión de informes realizados por el Fondo Estratégico durante los años 2019-2020, la evaluación de las modalidades de adquisición y revisión de las bases de datos de compras públicas para 5 medicamentos antihipertensivos, y el análisis comparativo con el precio obtenido por el Fondo Estratégico. Se identificaron diferencias que oscilaron entre 20% y 99%, lo que evidencia oportunidades de ahorro significativas. Asimismo, se presentan las acciones interprogramáticas desarrolladas en apoyo a la Iniciativa HEARTS, entre las que se destacan la inclusión de medicamentos antihipertensivos recomendados por la Organización Mundial de la Salud; la consolidación de la demanda regional y el establecimiento de precios competitivos con acuerdos a largo plazo para gestionar la adquisición de productos genéricos de calidad; y la definición de especificaciones técnicas y requisitos regulatorios para apoyar con la adquisición de dispositivos para la medición de la presión arterial. A través de este mecanismo, los Estados Miembros pueden disminuir sus costos significativamente, extendiendo cobertura del tratamiento y diagnóstico a más personas.

Developing population-based hypertension control programs

Hypertension remains the leading cause of cardiovascular disease globally despite the availability of safe and effective treatments. Unfortunately, many barriers exist to controlling hypertension, including a lack of effective screening and awareness, an inability to access treatment and challenges with its management when it is treated. Addressing these barriers is complex and requires engaging in a systematic and sustained approach across communities over time. This analysis aims to describe the key elements needed to create an effective delivery system for hypertension control. A successful system requires political will and supportive leadership at all levels of an organization, including at the point of care delivery (office or clinic), in the health care system, and at regional, state and national levels. Effective screening and outreach systems are necessary to identify individuals not previously diagnosed with hypertension, and a system for follow up and tracking is needed after people are diagnosed. Implementing simple protocols for treating hypertension can reduce confusion among providers and increase treatment efficiency. Ensuring easy access to safe, effective and affordable medications can increase blood pressure control and potentially decrease health care system costs. Task-sharing among members of the health care team can expand the services that are delivered. Finally, monitoring of and reporting on the performance of the health care team are needed to learn from those who are doing well, disseminate ideas to those in need of improvement and identify individual patients who need outreach or additional care. Successful large-scale hypertension programs in different settings share many of these key elements and serve as examples to improve systems of hypertension care delivery throughout the world.

Integrating hypertension and diabetes management in primary health care settings: HEARTS as a tool

Hypertension and diabetes are modifiable cardiovascular disease (CVD) risk factors that contribute to nearly one-third of all deaths in the Americas Region each year (2.3 million deaths). Despite advances in the detection and clinical management of hypertension and diabetes, there are substantial gaps in their implementation globally and in the Region. The considerable overlap in risk factors, prognosis, and treatment of hypertension and diabetes creates a unique opportunity for a unified implementation model for management at the population level. This report highlights one such high-profile effort, the Pan American Health Organization's "HEARTS in the Americas" program, based on the World Health Organization's HEARTS Technical Package for Cardiovascular Disease Management in Primary Health Care. The HEARTS program aims to improve the implementation of preventive CVD care in primary health systems using six evidence-based, pragmatic components: Healthy-lifestyle counseling, Evidence-based protocols, Access to essential medicines and technology, Risk-based CVD management, Team-based care, and Systems for monitoring. To date, HEARTS implementation projects have focused primarily on hypertension given that it is the leading modifiable CVD risk factor and can be treated cost-effectively. The objective of this report is to describe opportunities for integration of diabetes clinical care and policy within the HEARTS hypertension framework. A substantial global burden of disease could be averted with integrated primary care management of these conditions. Thus, there is an urgency in applying lessons from HEARTS to close these implementation gaps and improve the integrated detection, treatment, and control of diabetes and hypertension.

HEARTS in the Americas appraisal checklist and clinical pathway for comprehensive hypertension management in primary care

ABSTRACT

Cardiovascular diseases are the leading cause of mortality and morbidity in the Region of the Americas, and hypertension represents its main risk factor. However, population hypertension control rates in the Region are poor. Global Hearts is the World Health Organization's flagship initiative to reduce the burden of cardiovascular diseases. HEARTS in the Americas Initiative is its regional adaptation that seeks to be the cardiovascular disease risk management model, including hypertension and diabetes, in primary health care throughout the Americas by 2025.

HEARTS in the Americas is being implemented in 22 countries and over 2 095 primary care centers. All implementing countries have defined their treatment protocols, and HEARTS in the Americas has supported continuous improvement. Because WHO recently released the 2021 Guideline for the Pharmacological Treatment of Hypertension in Adults and HEARTS in the Americas introduced the key drivers for hypertension control, the initiative generated a methodology to help countries update and strengthen their treatment protocols.

This article describes the process of developing the treatment protocol appraisal checklist and defines the resulting clinical pathway. This tool can help countries and primary care centers to improve their protocols by identifying the improvement points and upgrading clinical pathways.

Highlights of the 2022 Vietnamese Society of Hypertension guidelines for the diagnosis and treatment of arterial hypertension: The collaboration of the Vietnamese Society of Hypertension (VSH) task force with the contribution of the Vietnam National Heart Association (VNHA): The collaboration of the Vietnamese Society of Hypertension (VSH) task force with the contribution of the Vietnam National Heart Association (VNHA)

Hypertension is uncontrolled in over 50% hypertensive population in Vietnam which indicated a compelling need for new hypertension guidelines. The highlights were composed of three parts: the diagnosis of arterial hypertension, the recommendation of home blood pressure monitoring, and the treatment of hypertension. Our guideline applied flexibility based upon the "essential" and "optimal" concepts in the diagnosis and management of hypertensive patients according to the socio-economic status of Vietnam. Hypertension is defined as an office systolic blood pressure ≥140 mmHg and/or diastolic blood pressure ≥90 mmHg which is equivalent to a 24-hr ambulatory blood pressure monitoring average of ≥130/80 mmHg or home blood pressure monitoring average of ≥135/85 mmHg. We established an integrated hypertensive diagnostic algorithm for adults with the optimal option by the role of out-of-office blood pressure measurement, especially home blood pressure monitoring, which is fully recommended in this guideline. The threshold and target of hypertension treatment were individualized in safety range and effective evidence-based medicine. We also update for the management of resistant hypertension, hypertension in diabetic patients, hypertension with heart failure, and with other comorbidities. Vietnam has tried on the best strategy for improving the control of hypertension and recently received several achievements in the world, especially in the Asian region. Because the conditions for conducting our national data have not been fully conducted, we have to adapt from existing guidelines so there are still certain limitations that need to be supplemented and adjusted in the upcoming version.

The Impact of International Nonproprietary Names Integration on Prescribing Reimbursement Medicines for Arterial Hypertension and Analysis of Medication Errors in Latvia

The use of international nonproprietary names (INNs) has been mandatory for prescriptions of state-reimbursed drugs in Latvia since 1 April 2020. In a retrospective analysis, we aimed to examine the impact of the new regulation on changes in the prescribing and dispensing practice of antihypertensive agents with an example of bisoprolol or/and perindopril and their combinations. All state-reimbursed bisoprolol and/or perindopril prescriptions for arterial hypertension were evaluated in two time periods: 1 April 2018 to 31 March 2019 and 1 April 2020 to 31 March 2021. The proportion of INN prescriptions increased from 2.1% to 92.3% (p < 0.001, φ = 0.903). The rate of fixed-dose combinations (FDCs) increased from 60.8% to 66.5% (p < 0.001, φ = 0.059). The rate of medication errors was 0.6%. The most common (80.6%) error was that the dispensed medicine dose was larger or smaller than indicated on the prescription. In addition, prescribing an FDC medicine increased the chance of making an error by 2.5 times on average. Regulatory changes dramatically affected the medicine-prescribing habits of INNs. The increase in FDC prescription rates may align with the recommendations of the 2018 ESC/ESH guidelines. The proportion of total errors is estimated as low, but control mechanisms are needed to prevent them.

HEARTS in the Americas: innovations for improving hypertension and cardiovascular disease risk management in primary care

Global Hearts is the flagship initiative of the World Health Organization to reduce the burden of cardiovascular diseases, the leading cause of death and disability worldwide. HEARTS in the Americas Initiative is the regional adaptation that envisions HEARTS as the model for cardiovascular disease risk management, including hypertension and diabetes, in primary health care in the Americas by 2025. This initiative is entering its sixth year of implementation and now includes 22 countries and 1 380 primary health care centers. The objectives of this report are three-fold. First, it describes the emergence and the main elements of HEARTS in the Americas. Secondly, it summarizes the main innovations developed to catalyze and sustain implementation of the initiative. These innovations include: a) introduction of hypertension control drivers; b) development of a comprehensive and practical clinical pathway; c) development of a strategy to improve the accuracy of blood pressure measurement; d) creation of a monitoring and evaluation platform; and e) development of a standardized set of training and education resources. Thirdly, this report discusses future priorities of the initiative. The goal of implementing these innovative and pragmatic solutions is to create a more effective health system and shift the focus of cardiovascular and hypertension programs from the highly specialized care level to primary health care. In addition, HEARTS in the Americas can serve as a model for more comprehensive, effective, and sustainable noncommunicable disease prevention and treatment practices.

Single-Pill Combination to Improve Hypertension Treatment: Pharmaceutical Industry Development

Multiple illness is an increasingly common phenomenon. Its consequence is the need for polytherapy, which is particularly common among people suffering from arterial hypertension. The development of combined preparations (containing at least two API-active pharmaceutical ingredients) dedicated to the treatment of hypertension is a response to increased compliance, especially in elderly patients. In our work, we describe in particular the possibilities of using β-adrenergic receptors blockers and angiotensin-converting enzyme inhibitors in combinations. The combinations of APIs are used as single pills in patients with arterial hypertension with concomitant diseases such as hyperlipidemia; blood coagulation problems and diabetes mellitus were also discussed successively. Pharmacoeconomic analysis for the API combinations shown is also presented. As a final conclusion, numerous benefits of using the combined preparations should be indicated, especially by the elderly and/or in patients with coexistence of other diseases.

Effect of a patient-centered hypertension delivery strategy on all-cause mortality: Secondary analysis of SEARCH, a community-randomized trial in rural Kenya and Uganda

BACKGROUND

Hypertension treatment reduces morbidity and mortality yet has not been broadly implemented in many low-resource settings, including sub-Saharan Africa (SSA). We hypothesized that a patient-centered integrated chronic disease model that included hypertension treatment and leveraged the HIV care system would reduce mortality among adults with uncontrolled hypertension in rural Kenya and Uganda.

METHODS AND FINDINGS

This is a secondary analysis of the SEARCH trial (NCT:01864603), in which 32 communities underwent baseline population-based multidisease testing, including hypertension screening, and were randomized to standard country-guided treatment or to a patient-centered integrated chronic care model including treatment for hypertension, diabetes, and HIV. Patient-centered care included on-site introduction to clinic staff at screening, nursing triage to expedite visits, reduced visit frequency, flexible clinic hours, and a welcoming clinic environment. The analytic population included nonpregnant adults (≥18 years) with baseline uncontrolled hypertension (blood pressure ≥140/90 mm Hg). The primary outcome was 3-year all-cause mortality with comprehensive population-level assessment. Secondary outcomes included hypertension control assessed at a population level at year 3 (defined per country guidelines as at least 1 blood pressure measure <140/90 mm Hg on 3 repeated measures). Between-arm comparisons used cluster-level targeted maximum likelihood estimation. Among 86,078 adults screened at study baseline (June 2013 to July 2014), 10,928 (13%) had uncontrolled hypertension. Median age was 53 years (25th to 75th percentile 40 to 66); 6,058 (55%) were female; 677 (6%) were HIV infected; and 477 (4%) had diabetes mellitus. Overall, 174 participants (3.2%) in the intervention group and 225 participants (4.1%) in the control group died during 3 years of follow-up (adjusted relative risk (aRR) 0.79, 95% confidence interval (CI) 0.64 to 0.97, p = 0.028). Among those with baseline grade 3 hypertension (≥180/110 mm Hg), 22 (4.9%) in the intervention group and 42 (7.9%) in the control group died during 3 years of follow-up (aRR 0.62, 95% CI 0.39 to 0.97, p = 0.038). Estimated population-level hypertension control at year 3 was 53% in intervention and 44% in control communities (aRR 1.22, 95% CI 1.12 to 1.33, p < 0.001). Study limitations include inability to identify specific causes of death and control conditions that exceeded current standard hypertension care.

CONCLUSIONS

In this cluster randomized comparison where both arms received population-level hypertension screening, implementation of a patient-centered hypertension care model was associated with a 21% reduction in all-cause mortality and a 22% improvement in hypertension control compared to standard care among adults with baseline uncontrolled hypertension. Patient-centered chronic care programs for HIV can be leveraged to reduce the overall burden of cardiovascular mortality in SSA.

TRIAL REGISTRATION

ClinicalTrials.gov NCT01864603.

Research Letter: Antihypertensive Drugs Market in India: An Insight on Size, Trends, and Prescribing Preferences in the Private Health Sector, 2016-2018

Background

India has a high burden of hypertension. While the private sector provides 70% of out-patient care in the country, a significant proportion of patients seeking care from the public sector buy drugs from private markets. This study aimed to describe India's private sector antihypertensive drugs market at the national and state levels over 2016-2018.

Methods

Antihypertensive drugs sales in India from 2016-2018 were analysed using a large nationally representative dataset for the private pharmaceuticals market. In addition, data for five states (Punjab, Madhya Pradesh, Kerala, Telangana, and Maharashtra) that were the foci of a large hypertension control program were studied.

Results

The Indian hypertension drug market grew at a rate of 6.9% from 2016 to 2018 with a total of 21,066 million pills sales in 2018. Single-pill combinations (SPCs) contributed to 39.1% of total sale volumes. The market comprised of 182 different antihypertensive drugs including 134 SPCs. Total volume of sales covered a maximum of 26% of treatment need for the estimated population with hypertension. Two-drug SPCs had the highest market share (36%), followed by calcium channel blockers (18%), beta-blockers (16%) and angiotensin receptor blockers (14%). Among SPCs, amlodipine+atenolol had highest sales (9.8%). Twenty-five drugs, a mix of single drugs and SPCs, accounted for 80% of total sales. There were large state-to-state variations in sales per capita, preferred therapeutic classes and drugs.

Conclusions

Despite the large antihypertensive drugs market, there exists a high unmet need for treatment in India. Inter-state differences in product sales indicate variable treatment practices, underscoring the need for private sector engagement to improve hypertension care practices aligned with national and international guidelines. SPCs contributed to a large share of the private market and inclusion of select antihypertensive SPCs in the national list of essential medications should be considered for the public health system.

Medication Adherence and Clinical Outcome of Fixed-Dose Combination vs. Free Combination of Angiotensin Receptor Blocker and Statin

BACKGROUND

Non-compliance with angiotensin receptor blockers (ARB) or statin is one of the major hurdles to optimal medical treatment. This study investigated whether fixed-dose combination (FDC) improved compliance to medication compared with traditional free combination (FC).Methods and Results:In this retrospective nationwide cohort study, medication persistency, medication adherence measured by proportion of days covered (PDC), and all-cause death of 123,992 patients who started ARB and stain were investigated for 540 days. Patients had a mean age of 63 years and 48% were male. Persistency, PDC, and proportion of PDC ≥80% of FDC (N=34,776) were higher than those for FC (N=89,216) in both unadjusted analysis (54.5% vs. 27.8%; 84.1% vs. 63.1%; 75.5% vs. 48.1%) and propensity-score matched analysis (P<0.001, all). Death risk for the investigation period (0-540 days) was lower in FDC in unadjusted (1.8% vs. 2.6%, P<0.001) and adjusted cohort (P<0.05). In landmark analyses at days 180 and 360, there was no significant difference of death risk between FDC and FC (P>0.05).

CONCLUSIONS

In this real-world data analysis, patients taking FDC of ARB and statin showed higher medication persistence and adherence compared to patients taking FC of ARB and statin up to 540 days. The risk of all-cause death was not different between FDC and FC despite better medication compliance in the FDC patients.

Standardized treatment to improve hypertension control in primary health care: The HEARTS in the Americas Initiative

Hypertension is the leading risk factor for cardiovascular disease (CVD) worldwide. Despite the availability of effective antihypertensive medications, the control of hypertension at a global level is dismal, and consequently, the CVD burden continues to increase. In response, countries in Latin America and the Caribbean are implementing the HEARTS in the Americas, a community-based program that focuses on increasing hypertension control and CVD secondary prevention through risk factor mitigation. One key pillar is the implementation of a standardized hypertension treatment protocol supported by a small, high-quality formulary. This manuscript describes the methodology used by the HEARTS in the Americas program to implement a population-based standardized hypertension treatment protocol. It is rooted in a seamless transition from existing treatment practices to best practice using pharmacologic protocols built around a core set of ideal antihypertensive medications. In alignment with recent major hypertension guidelines, the HEARTS in the Americas protocols call for the rapid control of blood pressure, through the use of two antihypertensive medications, preferably in the form of a single pill, fixed-dose combination, in the initial treatment of hypertension. To date, the HEARTS in the Americas program has seen the improvement in antihypertensive medication formularies and the establishment of pharmacologic treatment protocols tailored to individual participating countries. This has translated to significant increases in hypertension control rates post-program implementation in these jurisdictions. Thus, the HEARTS in the Americas program could serve as a model, for not only the Americas Region but globally, and ultimately decrease the burden of CVD.

Approaches to the Management of Hypertension in Resource-Limited Settings: Strategies to Overcome the Hypertension Crisis in the Post-COVID Era

The COVID-19 pandemic has changed most aspects of everyday life in both the non-medical and medical settings. In the medical world, the pandemic has altered how healthcare is delivered and has necessitated an aggressive and new coordinated public health approach to limit its spread and reduce its disease burden and socioeconomic impact. This pandemic has resulted in a staggering morbidity and mortality and massive economic and physical hardships. Meanwhile, non-communicable diseases such as hypertension, diabetes mellitus, and cardiovascular disease in general continue to cause significant disease burden globally in the background. Though presently receiving less attention in the public eye than the COVID-19 pandemic, the hypertension crisis cannot be separated from the minds of healthcare providers, policymakers and the general public, as it continues to wreak havoc, particularly in vulnerable populations in resource limited settings. On this background, many of the strategies being employed to combat the COVID-19 pandemic can be used to re-energize and galvanize the fight against hypertension and hopefully bring the public health crisis associated with uncontrolled hypertension to an end.

Position statement of the Interamerican Society of Cardiology (IASC) on the current guidelines for the prevention, diagnosis and treatment of arterial hypertension 2017-2020

OBJECTIVES

As an Inter-American Society we are convinced of the need to standardize the steps in which we diagnose, evaluate, treat and control hypertension, establishing guidelines and rules that should be adopted in all countries of Latin America, aimed at standardizing management and control of CV risk in order to achieve a substantial decrease in CV events.

METHODS

In the last four years important international guidelines for the diagnosis, management, treatment and control of arterial hypertension have been published. In America, mostly in mid- and low-income countries, hypertension is a major problem of public health, being the most important cardiovascular risk factor due to its great population impact. Therefore, it is crucial to dedicate all the possible efforts to increase substantially the number of hypertensive patients diagnosed in a given area, and to improve the percentage of controlled patients. This is a major necessity in order to reduce the morbidity and mortality for CVD in the Latin American region, although no guidelines takes the Latin American populations into account, and much less standardizes their diagnosis and management.

CONCLUSIONS

The Inter-American Society of Cardiology suggest the use of the blood pressure classification of the Latin American Society of Hypertension (LASH) and recommends the use of the SCORE System to stratify the global CV risk because this system has the capability to adapt the global risk by means of a correcting factor based on the ethnicity of the different native populations in America.

Trends in Antihypertensive Medication Monotherapy and Combination Use Among US Adults, National Health and Nutrition Examination Survey 2005-2016

Blood pressure (BP) control rates among US adults taking antihypertensive medication have not increased over the past decade. Many adults require 2 or more classes of antihypertensive medication to achieve guideline-recommended BP goals, but the proportion of US adults taking antihypertensive medication monotherapy, versus combination therapy, has not been quantified using contemporary data. We analyzed data from 2005 to 2008, 2009 to 2012, and 2013 to 2016 National Health and Nutrition Examination Surveys to determine trends in monotherapy and combinations of antihypertensive medication classes among US adults age ≥20 years with hypertension taking antihypertensive medication (n=7837). The proportion of US adults taking antihypertensive medication with uncontrolled BP (ie, systolic BP ≥140 or diastolic BP ≥90 mm Hg) was 32.3%, 30.2%, and 31.0% in 2005 to 2008, 2009 to 2012, and 2013 to 2016, respectively (Ptrend=0.37). Between 2005 to 2008 and 2013 to 2016, there was no evidence of changes in the proportions of US adults taking antihypertensive monotherapy (39.5%-40.4%, Ptrend=0.67), dual-therapy (37.9%-38.3%, Ptrend=0.75), triple-therapy (17.6%-16.5%, Ptrend=0.36), or quadruple-therapy (4.4%-4.3%, Ptrend=0.93). Between 2005 to 2008 and 2013 to 2016, there was no evidence of changes in the proportions of US adults with uncontrolled BP taking antihypertensive monotherapy (39.3%-40.6%, Ptrend=0.78). A high proportion of US adults with hypertension, including those with uncontrolled BP, are taking one antihypertensive medication class. Increasing the use of dual- and triple-therapy antihypertensive medication regimens may restore the upward trend in BP control rates among US adults.

Scaling up effective treatment of hypertension-A pathfinder for universal health coverage

High blood pressure is the world's leading cause of death, but despite treatment for hypertension being safe, effective, and low cost, most people with hypertension worldwide do not have it controlled. This article summarizes lessons learned in the first 2 years of the Resolve to Save Lives (RTSL) hypertension management program, operated in coordination with the World Health Organization (WHO) and other partners. Better diagnosis, treatment, and continuity of care are all needed to improve control rates, and five necessary components have been recommended by RTSL, WHO and other partners as being essential for a successful hypertension control program. Several hurdles to hypertension control have been identified, with most related to limitations in the health care system rather than to patient behavior. Treatment according to standardized protocols should be started as soon as hypertension is diagnosed, and medical practices and health systems must closely monitor patient progress and system performance. Improvement in hypertension management and control, along with elimination of artificial trans fat and reduction of dietary sodium consumption, will improve many aspects of primary care, contribute to goals for universal health coverage, and could save 100 million lives worldwide over the next 30 years.

The association of angiotensin receptor blocker-based combination therapy with persistence and adherence in newly treated, uncomplicated hypertensive patients

PURPOSE

We compared treatment adherence and persistence during treatment with an angiotensin receptor blocker (ARB)-based single pill combination (SPC) and free equivalent combination (FEC) and between SPCs of an ARB with a thiazide diuretic (TD) and an ARB with a calcium channel blocker (CCB) as initial treatment in uncomplicated hypertensive patients who received pre-packaged medications from the pharmacy.

PATIENTS AND METHODS

Uncomplicated hypertensive patients who started combination treatment consisting of ARB and either TD or CCB were identified from a Korean national claims database. We used propensity score matching to construct two pairs of cohorts: SPC and FEC cohorts (20,175 patients per cohort) and SPC cohorts of ARB + TD and ARB + CCB (45,253 patients per cohort). We compared adherence measured via the medication possession ratio as well as overall 1-year and initial treatment persistence.

RESULTS

Compared with the FEC cohort, the SPC cohort had significantly higher medication adherence (OR 1.31, 95% CI 1.25-1.37), overall persistence (HR 1.33, 95% CI 1.28-1.38), and initial treatment persistence (HR 1.61, 95% CI 1.56-1.64). Neither the rate of medication adherence nor the rate of treatment persistence differed significantly between the ARB + TD and ARB + CCB cohorts. However, the ARB + CCB cohort had a significantly higher rate of initial treatment persistence than did the ARB + TD cohort (HR 1.12, 95% CI 1.10-1.14).

CONCLUSION

Our data suggest that, compared with FEC therapy, initiating an ARB-based SPC therapy may increase adherence and persistence in patients with uncomplicated hypertension who also receive pre-packaged medication from the pharmacy. Although using an ARB + CCB SPC may improve initial treatment persistence, it does not increase adherence or overall persistence when compared with an ARB + TD SPC.