Adequate control of hypertension among older adults: ELSI-Brazil

Autocuidado para hipertensos

Objetivo: apresentar o desenvolvimento do material educativo intitulado “Autocuidado para Hipertensos: um guia para cuidar da sua saúde”.Métodos: este material foi desenvolvido com base nas orientações para construção de materiais de orientação para o cuidado em saúde, teve como ponto de partida o estudo multicêntrico: “Efetividade de uma estratégia NUtricional para controle PRESSórico em pacientes com hipertensão arterial sistêmica usuários do Sistema Único de Saúde: estudo NUPRESS”. Para a elaboração do material foi feito um levantamento bibliográfico. Em seguida, foi realizada a escrita dos temas abordados em forma de capítulos e, por último, foi montada a parte gráfica. Quando finalizado, o e-book foi enviado a 10 juízes que o avaliaram e validaram conforme a sua organização, estilo da escrita, aparência e apelo do material. Foram aceitas as sugestões dos juízes e realizadas as alterações. Resultados: os juízes (n=10), com média de idade de 43,7±17,6 anos e sendo 70% do sexo feminino, avaliaram em sua maioria, com concordância que o conteúdo do e-book possuía boa organização e aparência. Já os domínios de estilo de escrita e apelo foram os que apresentaram menor percentual de concordância entre os juízes, embora tenham obtido uma aprovação de 83,3% em cada dimensão. Conclusões: o e-book desenvolvido pode ser utilizado tanto por profissionais da saúde quanto por pessoas com hipertensão com o propósito de educação sobre a doença, saúde e autocuidado. O material tem linguagem objetiva e de fácil compreendimento, sem usar termos técnicos, além disso foram utilizados recursos gráficos para cativar e facilitar a leitura.

Hipertensión arterial autorreferida en adultos mayores brasileños: uso de medicación y recomendaciones para el control

Objetivo Estimar la prevalencia de hipertensión arterial (HA) autorreferida y del uso de medicación en los adultos mayores brasileños (≥65 años), según las características sociodemográficas, y evaluar el uso de los servicios de salud y de las recomendaciones de los médicos y profesionales de salud para el control de la enfermedad. Método Estudio transversal con datos de la Pesquisa Nacional de Salud del 2013 (n=7.712). Resultados La prevalencia de HA fue del 54,1%, con diferencia entre los sexos. En los hombres, la prevalencia de HA fue mayor en las regiones Sur y Sudeste, y en las mujeres fue mayor en los subgrupos de 75 a 79 años y de menor escolaridad. El uso de medicación para la HA fue mencionado por el 91,7%, sin diferencia entre los sexos. Las mujeres fueron diagnosticadas con más precocidad (≤39 años) que los hombres (≥65 años). Conclusión El mantenimiento de una alimentación saludable y el consumo reducido de sal se observaron con mayor frecuencia en las mujeres. Los resultados destacan la necesidad de intervenciones para promover el autocuidado, sobre todo entre los hombres.

Direct cost of systemic arterial hypertension and its complications in the circulatory system from the perspective of the Brazilian public health system in 2019

INTRODUCTION

Systemic arterial hypertension (SAH), a global public health problem and the primary risk factor for cardiovascular diseases, has a significant financial impact on health systems. In Brazil, the prevalence of SAH is 23.7%, which caused 203,000 deaths and 3.9 million DALYs in 2015.

OBJECTIVE

To estimate the cost of SAH and circulatory system diseases attributable to SAH from the perspective of the Brazilian public health system in 2019.

METHODS

A prevalence-based cost-of-illness was conducted using a top-down approach. The population attributable risk (PAR) was used to estimate the proportion of circulatory system diseases attributable to SAH. The direct medical costs were obtained from official Ministry of Health of Brazil records and literature parameters, including the three levels of care (primary, secondary, and tertiary). Deterministic univariate analyses were also conducted.

RESULTS

The total cost of SAH and the proportion of circulatory system diseases attributable to SAH was Int$ 581,135,374.73, varying between Int$ 501,553,022.21 and Int$ 776,183,338.06. In terms only of SAH costs at all healthcare levels (Int$ 493,776,445.89), 97.3% were incurred in primary care, especially for antihypertensive drugs provided free of charge by the Brazilian public health system (Int$ 363,888,540.14). Stroke accounted for the highest cost attributable to SAH and the third highest PAR, representing 47% of the total cost of circulatory diseases attributable to SAH. Prevalence was the parameter that most affected sensitivity analyses, accounting for 36% of all the cost variation.

CONCLUSION

Our results show that the main Brazilian strategy to combat SAH was implemented in primary care, namely access to free antihypertensive drugs and multiprofessional teams, acting jointly to promote care and prevent and control SAH.

Hypertension in African Populations: Review and Computational Insights

Hypertension (HTN) is a persistent public health problem affecting approximately 1.3 billion individuals globally. Treatment-resistant hypertension (TRH) is defined as high blood pressure (BP) in a hypertensive patient that remains above goal despite use of ≥3 antihypertensive agents of different classes including a diuretic. Despite a plethora of treatment options available, only 31.0% of individuals have their HTN controlled. Interindividual genetic variability to drug response might explain this disappointing outcome because of genetic polymorphisms. Additionally, the poor knowledge of pathophysiological mechanisms underlying hypertensive disease and the long-term interaction of antihypertensive drugs with blood pressure control mechanisms further aggravates the problem. Furthermore, in Africa, there is a paucity of pharmacogenomic data on the treatment of resistant hypertension. Therefore, identification of genetic signals having the potential to predict the response of a drug for a given individual in an African population has been the subject of intensive investigation. In this review, we aim to systematically extract and discuss African evidence on the genetic variation, and pharmacogenomics towards the treatment of HTN. Furthermore, in silico methods are utilized to elucidate biological processes that will aid in identifying novel drug targets for the treatment of resistant hypertension in an African population. To provide an expanded view of genetic variants associated with the development of HTN, this study was performed using publicly available databases such as PubMed, Scopus, Web of Science, African Journal Online, PharmGKB searching for relevant papers between 1984 and 2020. A total of 2784 articles were reviewed, and only 42 studies were included following the inclusion criteria. Twenty studies reported associations with HTN and genes such as AGT (rs699), ACE (rs1799752), NOS3 (rs1799983), MTHFR (rs1801133), AGTR1 (rs5186), while twenty-two studies did not show any association within the African population. Thereafter, an in silico predictive approach was utilized to identify several genes including CLCNKB, CYPB11B2, SH2B2, STK9, and TBX5 which may act as potential drug targets because they are involved in pathways known to influence blood pressure. Next, co-expressed genes were identified as they are controlled by the same transcriptional regulatory program and may potentially be more effective as multiple drug targets in the treatment regimens for HTN. Genes belonging to the co-expressed gene cluster, ACE, AGT, AGTR1, AGTR2, and NOS3 as well as CSK and ADRG1 showed enrichment of G-protein-coupled receptor activity, the classical targets of drug discovery, which mediate cellular signaling processes. The latter is of importance, as the targeting of co-regulatory gene clusters will allow for the development of more effective HTN drug targets that could decrease the prevalence of both controlled and TRH.

Blood pressure control of hypertensive patients followed in a high complexity clinic and associated variables

INTRODUCTION

Arterial hypertension is a disease that has a high impact on cardiovascular mortality and morbidity; however, it is still insufficiently controlled.

OBJECTIVES

To assess hypertension control in patients seen at a specialized clinic and to identify associated variables.

METHOD

Cross-sectional study involving the analysis of medical records from 782 patients treated in a highly complex outpatient clinic. Inclusion criteria: age ≥18 years, diagnosed with hypertension, in treatment ≥6 months. Patients with secondary hypertension (104) and incomplete data (64) were excluded. The main outcome was blood pressure control (systolic <140 and diastolic <90 mmHg). The independent variables studied were: sociodemographic and clinical characteristics (use of drugs, comorbidities and laboratory tests). Pearson's χ2 tests, Fisher's test, Student's t and Wilcoxon-Mann-Whitney tests were performed in the bivariate analysis and logistic regression in the multiple analyses, adopting p≤0.05.

RESULTS

The prevalence of hypertensive control was 51.1%. It was associated with a lack of control: body mass index (OR = 1.038; 95% CI = 1.008 - 1.071), history of stroke (OR = 0.453; 95% CI = 0.245 - 0.821), left ventricular hypertrophy (OR = 1.765; 95% CI = 1.052 - 3.011), and number of medications (OR = 1.082; 95% CI = 1.033 - 1.136).

CONCLUSION

About half of the hypertensive patients had their blood pressure controlled; clinical variables and target organ damage were associated with the control.

Utilization, Cost, and Affordability of Antihypertensive Therapy in Bulgaria

ACE- inhibitors, angiotensin receptor blockers, beta-blockers, Ca- antagonists are recommended as first-line monotherapy for hypertension. The aim of the current study is to analyze expenditures paid by the National Health Insurance Fund (NHIF) after introducing the budget cap cost-containment measure and its impact on affordability and utilization. The study is a retrospective, observational analysis of expenditure on main groups' antihypertensive medicines: beta blockers, calcium channel blockers, ACE- inhibitors, and AT receptor blockers. The cost paid by the NHIF two years before (2016-2017), and after (2018-2019) the introduction of the budget cap measure was evaluated. Utilization and affordability data covering antihypertensive therapy were retrospectively calculated and analyzed during 2016-2019. The reimbursed expenditures on sartans, ACE-inhibitors, and β-blockers decreased in absolute terms in 2019 compared to that in 2016. There are no statistically significant differences, excluding the group of sartans. The result reveals decreasing utilization of ACE-inhibitors and β-blockers, which is the most significant for enalapril and bisoprolol. Affordability increases during the observed period because less than a working day income is sufficient for monthly therapy. Patients with hypertension in Bulgaria have access to affordable first-line antihypertensive medicines. Despite the stable and low prices, utilization mainly decreases. The reimbursed amount is reduced with a low rate or remains similar to that found at the beginning of the observed period. The results of the implemented budget cap as a measure to control NHIF cost are not evident and not fully expressed on the market for the first-line antihypertensive therapy.

ELSI-COVID-19 initiative: methodology of the telephone survey on coronavirus in the Brazilian Longitudinal Study of Aging

The COVID-19 pandemic (caused by the SARS-CoV-2) is a public health emergency of international concern that particularly affects older people. Brazil is one of the countries most affected by the pandemic, ranking second with the highest number of confirmed cases and deaths worldwide as of mid-June 2020. The ELSI-COVID-19 initiative is based on telephone interviews with participants of the Brazilian Longitudinal Study of Aging (ELSI-Brazil), conducted on a nationally representative sample of the population aged 50 or older. This initiative aims to provide information on adherence to preventive measures (social distancing, wearing masks, and handwashing/hygiene); reasons for leaving the house, when that was the case; difficulties obtaining medications, medical diagnosis of COVID-19, and receipt of confirmatory results; use of health-care services (recent care-seeking, care-seeking location, care receipt, among other aspects); and mental health (sleep, depression, and loneliness). The first round of telephone interviews was conducted between May 26 and June 8, 2020. The second and third rounds are expected to occur within the coming months. This article presents this initiative methodology and some sociodemographic characteristics of the 6,149 participants in the survey first round, relative the Brazilian population within the same age group.

Reasons for non-vaccination against influenza among older adults with hypertension in Brazil: a cross-sectional study

The aim of this study was to estimate the prevalence of non-vaccination against influenza among Brazilian older adults with systemic arterial hypertension and determine the main reasons for non-adherence. A cross-sectional study was conducted using data from older adults (≥ 60 years of age) with hypertension who participated in the 2013 National Health Survey and reported not having been vaccinated against flu over the previous 12 months (n = 1,295). The analyses were performed using the Stata 14.0 software. The data were weighted because of the sampling design. An estimated 3,026,080 older adults with hypertension had not received a flu vaccine over the 12 months prior to the survey (22.6%). No significant associations were found with sex, age group or schooling. The prevalence of unvaccinated older adults was lower in the southern and southeastern regions of Brazil than in the northern and northeastern regions, even after adjusting for age. The prevalence was higher among individuals without private health insurance. The main reasons for non-vaccination were fear of a reaction, rarely having the flu and not believing in the protection of the vaccine. The present findings underscore the need for healthcare professionals to explain to the population the benefits of the vaccine for preventing severe influenza (protective effect and possible reactions) and for secondary prevention of cardiovascular events. Increasing the prevalence of vaccination in older adults with hypertension and other cardiovascular diseases is of fundamental importance within the realm of public health as a strategy for reducing occurrences of complications and deaths associated with influenza.

Prevalence of Systemic Arterial Hypertension Diagnosed, Undiagnosed, and Uncontrolled in Elderly Population: SABE Study

Systemic arterial hypertension is the most prevalent chronic noncommunicable disease among older people. This study aimed to estimate the prevalence of hypertension in the elderly and to analyze factors associated with diagnosed, undiagnosed, and uncontrolled hypertension. This is a cross-sectional study of data from the SABE study-Health, Well-Being, and Aging Survey-a multiple-cohort study, obtained in 2010, composed of a probabilistic sample representative of the population of the São Paulo city aged ≥60 years. Hypertension was self-reported or defined by increased blood pressure. Multinomial regression assessed factors associated with diagnosis and lack of diagnosis of hypertension (reference: no hypertension), and logistic regression assessed factors associated with uncontrolled hypertension (reference: controlled). The prevalence of hypertension was 79.5%, and in 51% of individuals with the condition, hypertension was uncontrolled. Undiagnosed hypertension was associated with nonwhite skin color (OR: 1.89, CI: 1.11-3.19), being uninsured (OR: 1.77, CI: 1.04-3.03), overweight (OR: 2.38, CI: 1.09-5.19), higher education (OR: 0.46, CI: 0.22-1.94), and ≥1 chronic disease (OR: 0.28; CI: 0.13-0.58). Diagnosed hypertension was associated with age between 70 and 79 years (OR: 2.02, CI: 1.34-3.05), age ≥80 (OR: 2.73, CI: 1.72-4.31), nonwhite skin color (OR: 1.48, CI: 1.01-2.18), being uninsured (OR: 1.70, CI: 1.18-2.47), at least one medical consultation in the last year (OR: 1.86, CI: 1.06-3.25), obesity (OR: 2.50, CI: 1.61-3.88), and ≥1 chronic disease (OR: 2.81, CI: 1.94-4.08). Among those with hypertension, being uncontrolled was associated with widowhood (OR: 1.73, CI: 1.23-2.43), being uninsured (OR: 1.38, CI: 1.02-1.87), and female gender (OR: 0.61, CI: 0.43-0.87). The prevalence of hypertension was high in this population, and its diagnosis and control were associated with socioeconomic, demographic, and healthcare access factors.