Developing population-based hypertension control programs

[ABSTRACT]. 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 medica- tions 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.

[RESUMEN]. A pesar de la disponibilidad de tratamientos seguros y efectivos, la hipertensión sigue siendo la principal causa de enfermedad cardiovascular a nivel mundial. Lamentablemente, el control de la hipertensión enfrenta muchos obstáculos, como la falta de detección y concientización efectivas, la incapacidad de acceder al tratamiento y los retos que plantea su manejo cuando se recibe tratamiento. Resulta complejo abordar estos obstáculos; se debe adoptar un enfoque sistemático y sostenido en todas las comunidades a lo largo del tiempo. El presente análisis tiene como objetivo describir los elementos clave necesarios para crear un sistema de atención eficaz para el control de la hipertensión. Un sistema adecuado precisa voluntad política y un liderazgo que brinde apoyo en todos los niveles de una organización, incluido el punto donde se presta la atención (consultorio o clínica), el sistema de atención de salud y a nivel regional, estatal y nacional. Se necesitan sistemas efectivos de detección y de alcance comunitario para encontrar a las personas sin diag- nóstico previo de hipertensión, así como un sistema para el seguimiento y la localización una vez han sido diagnosticadas. La aplicación de protocolos simples para tratar la hipertensión puede reducir la confusión entre los proveedores y aumentar la eficiencia del tratamiento. Garantizar un acceso fácil a medicamentos seguros, efectivos y asequibles puede aumentar el control de la presión arterial y potencialmente disminuir los costos para el sistema de atención de salud. La distribución de tareas entre los miembros del equipo de atención de salud permite expandir los servicios que se prestan. Finalmente, es necesario dar seguimiento al desempeño del equipo de atención de salud y presentar información al respecto, a fin de aprender de las buenas prácticas, difundir ideas entre quienes necesitan mejorar y determinar a cuáles pacientes se debe llegar y cuáles necesitan atención adicional. Los programas de hipertensión a gran escala con buenos resultados en diferentes entornos comparten muchos de estos elementos clave y sirven como ejemplos para mejorar la atención de la hipertensión en todo el mundo.

[RESUMO]. A hipertensão continua sendo a principal causa de doenças cardiovasculares no mundo, apesar da dis- ponibilidade de tratamentos seguros e eficazes. Infelizmente, existem muitas barreiras para o controle da hipertensão, incluindo a falta de rastreamento e a conscientização eficazes, a incapacidade de acesso ao tratamento e desafios de conduta clínica quando ela é tratada. A abordagem dessas barreiras é complexa e requer um enfoque sistemático e sustentado em diferentes comunidades ao longo do tempo. Esta análise tem como objetivo descrever os elementos-chave necessários para criar um sistema eficaz de prestação de intervenções para o controle da hipertensão. Um sistema de sucesso requer vontade política e liderança que o apoie em todos os níveis de uma organização, inclusive no ponto da prestação de cuidados (consultório ou clínica), no sistema de saúde e nos níveis regional, estadual e nacional. Sistemas eficazes de triagem e acolhida são necessários para identificar indivíduos com hipertensão não diagnosticada, e um sistema de acompanhamento e rastreamento após o diagnóstico se faz igualmente necessário. A implementação de protocolos simples para o tratamento da hipertensão pode reduzir a confusão entre os profissionais de saúde e aumentar a eficiência do tratamento. Garantir o fácil acesso a medicamentos seguros, eficazes e acessíveis pode aumentar o controle da pressão arterial e potencialmente diminuir os custos do sistema de saúde. A divisão de tarefas entre os integrantes da equipe de saúde pode expandir os serviços prestados. Finalmente, é necessário monitorar e informar acerca do desempenho da equipe de saúde para aprender com aqueles que estão indo bem, disseminar ideias para aqueles que precisam melhorar e identificar pacientes individuais que precisam de ajuda ou cuidados adicionais. Programas bem-sucedidos de controle da hipertensão em larga escala em diferentes ambientes compartilham muitos desses elementos-chave e servem como exem- plos para melhorar os sistemas de atenção à hipertensão em todo o mundo.

Developing population-based hypertension control programs / Creación de programas de control de la hipertensión basados en la población / Desenvolvimento de programas de controle da hipertensão de base populacional

ABSTRACT 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.

RESUMEN A pesar de la disponibilidad de tratamientos seguros y efectivos, la hipertensión sigue siendo la principal causa de enfermedad cardiovascular a nivel mundial. Lamentablemente, el control de la hipertensión enfrenta muchos obstáculos, como la falta de detección y concientización efectivas, la incapacidad de acceder al tratamiento y los retos que plantea su manejo cuando se recibe tratamiento. Resulta complejo abordar estos obstáculos; se debe adoptar un enfoque sistemático y sostenido en todas las comunidades a lo largo del tiempo. El presente análisis tiene como objetivo describir los elementos clave necesarios para crear un sistema de atención eficaz para el control de la hipertensión. Un sistema adecuado precisa voluntad política y un liderazgo que brinde apoyo en todos los niveles de una organización, incluido el punto donde se presta la atención (consultorio o clínica), el sistema de atención de salud y a nivel regional, estatal y nacional. Se necesitan sistemas efectivos de detección y de alcance comunitario para encontrar a las personas sin diagnóstico previo de hipertensión, así como un sistema para el seguimiento y la localización una vez han sido diagnosticadas. La aplicación de protocolos simples para tratar la hipertensión puede reducir la confusión entre los proveedores y aumentar la eficiencia del tratamiento. Garantizar un acceso fácil a medicamentos seguros, efectivos y asequibles puede aumentar el control de la presión arterial y potencialmente disminuir los costos para el sistema de atención de salud. La distribución de tareas entre los miembros del equipo de atención de salud permite expandir los servicios que se prestan. Finalmente, es necesario dar seguimiento al desempeño del equipo de atención de salud y presentar información al respecto, a fin de aprender de las buenas prácticas, difundir ideas entre quienes necesitan mejorar y determinar a cuáles pacientes se debe llegar y cuáles necesitan atención adicional. Los programas de hipertensión a gran escala con buenos resultados en diferentes entornos comparten muchos de estos elementos clave y sirven como ejemplos para mejorar la atención de la hipertensión en todo el mundo.

RESUMO A hipertensão continua sendo a principal causa de doenças cardiovasculares no mundo, apesar da disponibilidade de tratamentos seguros e eficazes. Infelizmente, existem muitas barreiras para o controle da hipertensão, incluindo a falta de rastreamento e a conscientização eficazes, a incapacidade de acesso ao tratamento e desafios de conduta clínica quando ela é tratada. A abordagem dessas barreiras é complexa e requer um enfoque sistemático e sustentado em diferentes comunidades ao longo do tempo. Esta análise tem como objetivo descrever os elementos-chave necessários para criar um sistema eficaz de prestação de intervenções para o controle da hipertensão. Um sistema de sucesso requer vontade política e liderança que o apoie em todos os níveis de uma organização, inclusive no ponto da prestação de cuidados (consultório ou clínica), no sistema de saúde e nos níveis regional, estadual e nacional. Sistemas eficazes de triagem e acolhida são necessários para identificar indivíduos com hipertensão não diagnosticada, e um sistema de acompanhamento e rastreamento após o diagnóstico se faz igualmente necessário. A implementação de protocolos simples para o tratamento da hipertensão pode reduzir a confusão entre os profissionais de saúde e aumentar a eficiência do tratamento. Garantir o fácil acesso a medicamentos seguros, eficazes e acessíveis pode aumentar o controle da pressão arterial e potencialmente diminuir os custos do sistema de saúde. A divisão de tarefas entre os integrantes da equipe de saúde pode expandir os serviços prestados. Finalmente, é necessário monitorar e informar acerca do desempenho da equipe de saúde para aprender com aqueles que estão indo bem, disseminar ideias para aqueles que precisam melhorar e identificar pacientes individuais que precisam de ajuda ou cuidados adicionais. Programas bem-sucedidos de controle da hipertensão em larga escala em diferentes ambientes compartilham muitos desses elementos-chave e servem como exemplos para melhorar os sistemas de atenção à hipertensão em todo o mundo.

Can methods based on spot urine samples be used to estimate average population 24 h sodium excretion? Results from the Isfahan Salt Study.

OBJECTIVE: To assess agreement between established methods of estimating salt intake from spot urine collections and 24 h urinary Na (24hUNa) and then to develop a valid formula that can be used in the Iranian population to estimate salt intake from spot urine samples. DESIGN: A validation study. Three spot urine samples were collected (fasting second-void morning; afternoon; evening) on the same day as a 24 h urine collection. We estimated 24hUNa from spot specimens using the Kawasaki, Tanaka and INTERSALT equations. Two new formulas were developed, the Iran formula 1 (Iran 1) and Iran formula 2 (Iran 2), based on our population characteristics. SETTING: Iranian adults recruited in 2014-2015. PARTICIPANTS: Healthy volunteer adults aged ≥18 years. RESULTS: With all three spot urine specimens, predicted population 24hUNa was underestimated based on the INTERSALT equation (-469 to -708 mg/d; all P < 0·05) and conversely overestimation occurred with the Kawasaki equation (926 to 1080 mg/d; all P < 0·01). The Tanaka equation produced comparable estimates to measured 24hUNa (-151 to 86 mg/d; all P > 0·49). The newly derived formulas, Iran 1 and Iran 2, showed less mean bias than the established equations (Iran 1: 43 to 80 mg/d, all P > 0·55; Iran 2: 22 to 90 mg/d, all P > 0·50). CONCLUSIONS: In this Iranian sample, the Tanaka equation and newly derived formulas produced group-level estimates comparable to measured 24hUNa. The newly developed formulas showed less mean bias than established equations; however, they need to be tested for generalization in a larger sample.

Population-level interventions in government jurisdictions for dietary sodium reduction.

BACKGROUND: Excess dietary sodium consumption is a risk factor for high blood pressure, stroke and cardiovascular disease. Currently, dietary sodium consumption in almost every country is too high. Excess sodium intake is associated with high blood pressure, which is common and costly and accounts for significant burden of disease. A large number of jurisdictions worldwide have implemented population-level dietary sodium reduction initiatives. No systematic review has examined the impact of these initiatives. OBJECTIVES: • To assess the impact of population-level interventions for dietary sodium reduction in government jurisdictions worldwide.• To assess the differential impact of those initiatives by social and economic indicators. SEARCH METHODS: We searched the following electronic databases from their start date to 5 January 2015: the Cochrane Central Register of Controlled Trials (CENTRAL); Cochrane Public Health Group Specialised Register; MEDLINE; MEDLINE In Process & Other Non-Indexed Citations; EMBASE; Effective Public Health Practice Project Database; Web of Science; Trials Register of Promoting Health Interventions (TRoPHI) databases; and Latin American Caribbean Health Sciences Literature (LILACS). We also searched grey literature, other national sources and references of included studies.This review was conducted in parallel with a comprehensive review of national sodium reduction efforts under way worldwide (Trieu 2015), through which we gained additional information directly from country contacts.We imposed no restrictions on language or publication status. SELECTION CRITERIA: We included population-level initiatives (i.e. interventions that target whole populations, in this case, government jurisdictions, worldwide) for dietary sodium reduction, with at least one pre-intervention data point and at least one post-intervention data point of comparable jurisdiction. We included populations of all ages and the following types of study designs: cluster-randomised, controlled pre-post, interrupted time series and uncontrolled pre-post. We contacted study authors at different points in the review to ask for missing information. DATA COLLECTION AND ANALYSIS: Two review authors extracted data, and two review authors assessed risk of bias for each included initiative.We analysed the impact of initiatives by using estimates of sodium consumption from dietary surveys or urine samples. All estimates were converted to a common metric: salt intake in grams per day. We analysed impact by computing the mean change in salt intake (grams per day) from pre-intervention to post-intervention. MAIN RESULTS: We reviewed a total of 881 full-text documents. From these, we identified 15 national initiatives, including more than 260,000 people, that met the inclusion criteria. None of the initiatives were provided in lower-middle-income or low-income countries. All initiatives except one used an uncontrolled pre-post study design.Because of high levels of study heterogeneity (I2 > 90%), we focused on individual initiatives rather than on pooled results.Ten initiatives provided sufficient data for quantitative analysis of impact (64,798 participants). As required by the Grades of Recommendation, Assessment, Development and Evaluation (GRADE) method, we graded the evidence as very low due to the risk of bias of the included studies, as well as variation in the direction and size of effect across the studies. Five of these showed mean decreases in average daily salt intake per person from pre-intervention to post-intervention, ranging from 1.15 grams/day less (Finland) to 0.35 grams/day less (Ireland). Two initiatives showed mean increase in salt intake from pre-intervention to post-intervention: Canada (1.66) and Switzerland (0.80 grams/day more per person. The remaining initiatives did not show a statistically significant mean change.Seven of the 10 initiatives were multi-component and incorporated intervention activities of a structural nature (e.g. food product reformulation, food procurement policy in specific settings). Of those seven initiatives, four showed a statistically significant mean decrease in salt intake from pre-intervention to post-intervention, ranging from Finland to Ireland (see above), and one showed a statistically significant mean increase in salt intake from pre-intervention to post-intervention (Switzerland; see above).Nine initiatives permitted quantitative analysis of differential impact by sex (men and women separately). For women, three initiatives (China, Finland, France) showed a statistically significant mean decrease, four (Austria, Netherlands, Switzerland, United Kingdom) showed no significant change and two (Canada, United States) showed a statistically significant mean increase in salt intake from pre-intervention to post-intervention. For men, five initiatives (Austria, China, Finland, France, United Kingdom) showed a statistically significant mean decrease, three (Netherlands, Switzerland, United States) showed no significant change and one (Canada) showed a statistically significant mean increase in salt intake from pre-intervention to post-intervention.Information was insufficient to indicate whether a differential change in mean salt intake occurred from pre-intervention to post-intervention by other axes of equity included in the PROGRESS framework (e.g. education, place of residence).We identified no adverse effects of these initiatives.The number of initiatives was insufficient to permit other subgroup analyses, including stratification by intervention type, economic status of country and duration (or start year) of the initiative.Many studies had methodological strengths, including large, nationally representative samples of the population and rigorous measurement of dietary sodium intake. However, all studies were scored as having high risk of bias, reflecting the observational nature of the research and the use of an uncontrolled study design. The quality of evidence for the main outcome was low. We could perform a sensitivity analysis only for impact. AUTHORS' CONCLUSIONS: Population-level interventions in government jurisdictions for dietary sodium reduction have the potential to result in population-wide reductions in salt intake from pre-intervention to post-intervention, particularly if they are multi-component (more than one intervention activity) and incorporate intervention activities of a structural nature (e.g. food product reformulation), and particularly amongst men. Heterogeneity across studies was significant, reflecting different contexts (population and setting) and initiative characteristics. Implementation of future initiatives should embed more effective means of evaluation to help us better understand the variation in the effects.

Challenges and scientific considerations in hypertension management reflected in the 2012 recommendations of the Canadian Hypertension Education Program.

This article provides the scientific rationale and background information for the Canadian Hypertension Education Program's 2012 recommendations for the management of hypertension. It also summarizes the key new recommendations and the theme for 2012, which is the prevention of hypertension. The full recommendations are available at www.hypertension.ca.

Improving hypertension management through pharmacist prescribing; the rural Alberta clinical trial in optimizing hypertension (Rural RxACTION): trial design and methods.

BACKGROUND: Patients with hypertension continue to have less than optimal blood pressure control, with nearly one in five Canadian adults having hypertension. Pharmacist prescribing is gaining favor as a potential clinically efficacious and cost-effective means to improve both access and quality of care. With Alberta being the first province in Canada to have independent prescribing by pharmacists, it offers a unique opportunity to evaluate outcomes in patients who are prescribed antihypertensive therapy by pharmacists. METHODS: The study is a randomized controlled trial of enhanced pharmacist care, with the unit of randomization being the patient. Participants will be randomized to enhanced pharmacist care (patient identification, assessment, education, close follow-up, and prescribing/titration of antihypertensive medications) or usual care. Participants are patients in rural Alberta with undiagnosed/uncontrolled blood pressure, as defined by the Canadian Hypertension Education Program. The primary outcome is the change in systolic blood pressure between baseline and 24 weeks in the enhanced-care versus usual-care arms. There are also three substudies running in conjunction with the project examining different remuneration models, investigating patient knowledge, and assessing health-resource utilization amongst patients in each group. DISCUSSION: To date, one-third of the required sample size has been recruited. There are 15 communities and 17 pharmacists actively screening, recruiting, and following patients. This study will provide high-level evidence regarding pharmacist prescribing. TRIAL REGISTRATION: Clinicaltrials.gov NCT00878566.

Accuracy of administrative databases in identifying patients with hypertension.

BACKGROUND: Traditionally, the determination of the occurrence of hypertension in patients has relied on costly and time-consuming survey methods that do not allow patients to be followed over time. OBJECTIVES: To determine the accuracy of using administrative claims data to identify rates of hypertension in a large population living in a single-payer health care system. METHODS: Various definitions for hypertension using administrative claims databases were compared with 2 other reference standards: (1) data obtained from a random sample of primary care physician offices throughout the province, and (2) self-reported survey data from a national census. RESULTS: A case-definition algorithm employing 2 outpatient physician billing claims for hypertension over a 3-year period had a sensitivity of 73% (95% confidence interval [CI] 69%-77%), a specificity of 95% (CI 93%-96%), a positive predictive value of 87% (CI 84%-90%), and a negative predictive value of 88% (CI 86%-90%) for detecting hypertensive adults compared with physician-assigned diagnoses. Compared with self-reported survey data, the algorithm had a sensitivity of 64% (CI 63%-66%), a specificity of 94%(CI 93%-94%), a positive predictive value of 77% (76%-78%), and negative predictive value of 89% (CI 88%-89%). When this algorithm was applied to the entire province of Ontario, the age- and sex-standardized prevalence of hypertension in adults older than 35 years increased from 20% in 1994 to 29% in 2002. CONCLUSIONS: It is possible to use administrative data to accurately identify from a population sample those patients who have been diagnosed with hypertension. Given that administrative data are already routinely collected, their use is likely to be substantially less expensive compared with serial cross-sectional or cohort studies for surveillance of hypertension occurrence and outcomes over time in a large population.

The 2006 Canadian Hypertension Education Program recommendations for the management of hypertension: Part II - Therapy.

OBJECTIVE: To provide updated, evidence-based recommendations for the management of hypertension in adults. OPTIONS AND OUTCOMES: For lifestyle and pharmacological interventions, evidence from randomized, controlled trials and systematic reviews of trials was preferentially reviewed. Changes in cardiovascular morbidity and mortality were the primary outcomes of interest. For lifestyle interventions, blood pressure (BP) lowering was accepted as a primary outcome given the lack of long-term morbidity/mortality data in this field. For treatment of patients with kidney disease, the development of proteinuria or worsening of kidney function was also accepted as a clinically relevant primary outcome. EVIDENCE: MEDLINE searches were conducted from November 2004 to October 2005 to update the 2005 recommendations. In addition, reference lists were scanned and experts were contacted to identify additional published studies. All relevant articles were reviewed and appraised independently by content and methodological experts using prespecified levels of evidence. RECOMMENDATIONS: Lifestyle modifications to prevent and/or treat hypertension include the following: perform 30 min to 60 min of aerobic exercise four to seven days per week; maintain a healthy body weight (body mass index of 18.5 kg/m2 to 24.9 kg/m2) and waist circumference (less than 102 cm for men and less than 88 cm for women); limit alcohol consumption to no more than 14 standard drinks per week in men or nine standard drinks per week in women; follow a diet that is reduced in saturated fat and cholesterol and that emphasizes fruits, vegetables and low-fat dairy products; restrict salt intake; and consider stress management in selected individuals. Treatment thresholds and targets should take into account each individual's global atherosclerotic risk, target organ damage and comorbid conditions. BP should be lowered to less than 140/90 mmHg in all patients, and to less than 130/80 mmHg in those with diabetes mellitus or chronic kidney disease (regardless of the degree of proteinuria). Most adults with hypertension require more than one agent to achieve these target BPs. For adults without compelling indications for other agents, initial therapy should include thiazide diuretics. Other agents appropriate for first-line therapy for diastolic hypertension with or without systolic hypertension include beta-blockers (in those younger than 60 years), angiotensin-converting enzyme (ACE) inhibitors (in nonblack patients), long-acting calcium channel blockers or angiotensin receptor antagonists. Other agents for first-line therapy for isolated systolic hypertension include long-acting dihydropyridine calcium channel blockers or angiotensin receptor antagonists. Certain comorbid conditions provide compelling indications for first-line use of other agents: in patients with angina, recent myocardial infarction or heart failure, beta-blockers and ACE inhibitors are recommended as first-line therapy; in patients with diabetes mellitus, ACE inhibitors or angiotensin receptor antagonists (or in patients without albuminuria, thiazides or dihydropyridine calcium channel blockers) are appropriate first-line therapies; and in patients with nondiabetic chronic kidney disease, ACE inhibitors are recommended. All hypertensive patients should have their fasting lipids screened, and those with dyslipidemia should be treated using the thresholds, targets and agents recommended by the Canadian Hypertension Education Program Working Group on the management of dyslipidemia and the prevention of cardiovascular disease. Selected patients with hypertension, but without dyslipidemia, should also receive statin therapy and/or acetylsalicylic acid therapy. VALIDATION: All recommendations were graded according to strength of the evidence and voted on by the 45 members of the Canadian Hypertension Education Program Evidence-Based Recommendations Task Force. All recommendations reported here achieved at least 95% consensus. These guidelines will continue to be updated annually.