Public health options for improving cardiovascular health among older Americans

Analysis of Vibration Frequency and Direction for Facilitating Upper-Limb Muscle Activity

We aimed to determine the effect of vibration frequency and direction on upper-limb muscle activation using a handheld vibrator. We recruited 19 healthy participants who were instructed to hold a handheld vibrator in their dominant hand and maintain the elbow at 90° flexion, while vertical and horizontal vibrations were applied with frequencies of 15, 30, 45, and 60 Hz for 60 s each. Surface electromyography (EMG) measured the activities of the flexor digitorum superficialis (FDS), flexor carpi radialis (FCR), extensor carpi ulnaris (ECU), extensor carpi radialis (ECR), biceps, triceps, and deltoid anterior muscles. EMG changes were evaluated as the difference in muscle activity between vibration and no-vibration (0 Hz) conditions. Muscle activity was induced under vibration conditions in both vertical and horizontal (p < 0.05) directions. At 45 Hz, FDS and FCR activities increased during horizontal vibrations, compared with those during vertical vibrations. ECU activity significantly increased under 15-Hz vertical vibrations compared with that during horizontal vibrations. Vibrations from the handheld vibrator significantly induced upper-limb muscle activity. The maximum muscle activations for FDS, ECR, ECU, biceps, and triceps were induced by 45-Hz horizontal vibration. The 60-Hz vertical and 30-Hz horizontal vibrations facilitated maximum muscle activations for the FCR and deltoid anterior, respectively.

Disparity and Multimorbidity in Heart Failure Patients Over the Age of 80

Background: Healthcare is currently struggling to provide access and coverage for an increasingly diverse aging population who frequently have multiple co-morbid conditions complicating their care and medical management. Methods: This retrospective study analyzed the prevalence and distribution of common co-morbid conditions (hypertension, dyslipidemia, dementia, and diabetes mellitus) in 316 elderly heart failure patients (age range 80-103; mean 87 ±4.9). Results: Chart review analysis showed a racial distribution of 65 African American versus 251 Caucasian patients (21 vs. 79%). Hypertension was comparable in both groups (98.5% African American vs. 92.4% Caucasian). Dyslipidemia, diabetes and dementia diagnoses were all approximately 20% higher in African American versus Caucasian patients. The concurrent presence of all four conditions was approximately three times more prevalent in African Americans (18.5%) versus Caucasians (7.2%). Conclusion: Our study is unique for studying disparity in octogenarian and nonagenarians residing in a rural setting. Our results also highlight the importance of making a special effort to engage older African American patients in seeking healthcare. In addition, strategies must be designed to reduce barriers that impede access and availability of resources and clinical care, especially in economically underserved regions of the country.

Community-based cardiovascular disease prevention programmes and cardiovascular risk factors: a systematic review and meta-analysis

OBJECTIVES

This study aimed to summarise the effect of community-based intervention programmes on the prevention of cardiovascular disease (CVD) by reducing cardiometabolic risk factors.

STUDY DESIGN

This was a systematic review and meta-analysis.

METHODS

A systematic search in the PubMed database and screening of reference lists aimed to identify community-based CVD prevention programmes from inception up to April 2020. The mean differences and standard deviations for CVD risk factors, including blood pressure, lipid profile, blood glucose and body weight indices, were extracted and pooled using a random effects model.

RESULTS

Screening of 11,889 titles/abstracts and full texts resulted in 48 studies being included in this review. The meta-analysis showed that community-based programmes have led to considerable decreases in systolic blood pressure (weighted mean difference [WMD] = -2.90 mm Hg, 95% confidence interval [95% CI]: -3.63, -2.16), diastolic blood pressure (WMD = -2.21 mm Hg, 95% CI: -3.12, -1.29), serum levels of low-density lipoprotein cholesterol (LDL-C; WMD = -8.88 mg/dl, 95% CI: -12.84, -4.92), triglycerides (WMD = -8.40 mg/dl, 95% CI: -12.10, -4.70), total cholesterol (WMD = -2.96 mg/dl, 95% CI: -3.10, -2.81) and fasting blood glucose (WMD = -2.06 mg/dl, 95% CI: -3.02, -1.10). A moderate decrease in body weight was also found with community-based CVD prevention programmes. However, community-based CVD prevention programmes were not associated with any significant changes in serum levels of high-density lipoprotein.

CONCLUSIONS

The present study indicates that community-based strategies have successfully led to an improvement in CVD risk factors, particularly by reducing blood pressure, serum levels of LDL-C and triglycerides, obesity indices and blood glucose. The impact of these programmes on CVD is modified by the type of intervention and by different cultural and physical environments.

Electromechanical Wave Imaging With Machine Learning for Automated Isochrone Generation

Standard Electromechanical Wave Imaging isochrone generation relies on manual selection of zero-crossing (ZC) locations on incremental strain curves for a number of pixels in the segmented myocardium for each echocardiographic view and patient. When considering large populations, this becomes a time-consuming process, that can be limited by inter-observer variability and operator bias. In this study, we developed and optimized an automated ZC selection algorithm, towards a faster more robust isochrone generation approach. The algorithm either relies on heuristic-based baselines or machine learning classifiers. Manually generated isochrones, previously validated against 3D intracardiac mapping, were considered as ground truth during training and performance evaluation steps. The machine learning models applied herein for the first time were: i) logistic regression; ii) support vector machine (SVM); and iii) Random Forest. The SVM and Random Forest classifiers successfully identified accessory pathways in Wolff-Parkinson-White patients, characterized sinus rhythm in humans, and localized the pacing electrode location in left ventricular paced canines on the resulting isochrones. Nevertheless, the best performing classifier was proven to be Random Forest with a precision rising from 89.5% to 97%, obtained with the voting approach that sets a probability threshold upon ZC candidate selection. Furthermore, the predictivity was not dependent on the type of testing dataset it was applied to, contrary to SVM that exhibited a 5% drop in precision on the canine testing dataset. Finally, these findings indicate that a machine learning approach can reduce user variability and considerably decrease the durations required for isochrone generation, while preserving accurate activation patterns.

Geographic Variation in Trends and Disparities in Heart Failure Mortality in the United States, 1999 to 2017

Background Cardiovascular disease mortality related to heart failure (HF) is rising in the United States. It is unknown whether trends in HF mortality are consistent across geographic areas and are associated with state-level variation in cardiovascular health (CVH). The goal of the present study was to assess regional and state-level trends in cardiovascular disease mortality related to HF and their association with variation in state-level CVH. Methods and Results Age-adjusted mortality rates (AAMR) per 100 000 attributable to HF were ascertained using the Centers for Disease Control and Prevention's Wide-Ranging Online Data for Epidemiologic Research from 1999 to 2017. CVH at the state-level was quantified using the Behavioral Risk Factor Surveillance System. Linear regression was used to assess temporal trends in HF AAMR were examined by census region and state and to examine the association between state-level CVH and HF AAMR. AAMR attributable to HF declined from 1999 to 2011 and increased between 2011 and 2017 across all census regions. Annual increases after 2011 were greatest in the Midwest (β=1.14 [95% CI, 0.75, 1.53]) and South (β=0.96 [0.66, 1.26]). States in the South and Midwest consistently had the highest HF AAMR in all time periods, with Mississippi having the highest AAMR (109.6 [104.5, 114.6] in 2017). Within race‒sex groups, consistent geographic patterns were observed. The variability in HF AAMR was associated with state-level CVH (P<0.001). Conclusions Wide geographic variation exists in HF mortality, with the highest rates and greatest recent increases observed in the South and Midwest. Higher levels of poor CVH in these states suggest the potential for interventions to promote CVH and reduce the burden of HF.

Improving cardiovascular outcomes by using team-supported, EHR-leveraged, active management: Disseminating a successful quality improvement project

BACKGROUND

Uncontrolled blood pressure (BP) is common among Veterans. Rural Veterans are at risk for suboptimal care coordination as successful programs may be implemented at lower rates due to individual- and system-level factors. There is strong evidence to support the use of remotely delivered support and patient-generated data from home BP monitors and virtual BP visits to manage BP.

OBJECTIVE

The purpose of this project is to augment the current approach to addressing uncontrolled BP so that existing clinical staff can reach a larger patient population.

METHODS

Our project will address uncontrolled BP by leveraging team-based care, the Veteran's Health Administration Electronic Health Record, and patient-centered medical home data to address patient, provider, and system barriers to cardiovascular disease (CVD) preventive care. We will implement this project in cardiovascular disease practices in three rural Veterans Health Administration clinics. We will evaluate implementation processes as well as patient-level (e.g., clinical outcomes, referrals to specialty services) outcomes in a one-arm, pre-post design.

DISCUSSION

This manuscript describes our process in expanding the implementation of a successful project to improve BP control in high-risk, rural Veterans. Findings from our study will inform an understanding of both implementation and clinical effectiveness outcomes of a potentially scalable BP intervention in rural, community-based clinics. Appropriate management of Veterans with uncontrolled BP can reduce morbidity and mortality related to CVD. In turn, improvements in BP, can lead to improved quality metrics and potentially decrease costs for a healthcare system.

Rethinking palliative care in a public health context: addressing the needs of persons with non-communicable chronic diseases

Non-communicable chronic diseases (NCCDs) are the main cause of morbidity and mortality globally. Demographic aging has resulted in older populations with more complex healthcare needs. This necessitates a multilevel rethinking of healthcare policies, health education and community support systems with digitalization of technologies playing a central role. The European Innovation Partnership on Active and Healthy Aging (A3) working group focuses on well-being for older adults, with an emphasis on quality of life and healthy aging. A subgroup of A3, including multidisciplinary stakeholders in health care across Europe, focuses on the palliative care (PC) model as a paradigm to be modified to meet the needs of older persons with NCCDs. This development paper delineates the key parameters we identified as critical in creating a public health model of PC directed to the needs of persons with NCCDs. This paradigm shift should affect horizontal components of public health models. Furthermore, our model includes vertical components often neglected, such as nutrition, resilience, well-being and leisure activities. The main enablers identified are information and communication technologies, education and training programs, communities of compassion, twinning activities, promoting research and increasing awareness amongst policymakers. We also identified key 'bottlenecks': inequity of access, insufficient research, inadequate development of advance care planning and a lack of co-creation of relevant technologies and shared decision-making. Rethinking PC within a public health context must focus on developing policies, training and technologies to enhance person-centered quality life for those with NCCD, while ensuring that they and those important to them experience death with dignity.

Palliative care and public health: an asymmetrical relationship?

Interest in the potential for public health and palliative care to work together is now widely established. Based on a mapping review of existing literature, we describe for the first time the ways in which public health has entered palliative care policy and practice and how this has been specifically articulated. We then go on to pursue analytical and critical lines of enquiry that are largely absent from the existing literature. We do this in three ways: (i) by considering why the link between public health and palliative care has become so ubiquitous within palliative care policy; (ii) by establishing how this has been constructed; and (iii) by exploring public health as a 'reference discipline' from which its 'secondary deployment' can become embedded inside another disciplinary field. From this, we develop a range of critical perspectives on the relationship between public health and palliative care by scrutinising its claims of utility and effectiveness and questioning the strength of the interdisciplinary interaction between the two disciplines. We see their relationship in a 'cross disciplinary' context which is still largely symbolic and tactical in nature. We conclude by considering the significance of these insights for policy and practice, with two possible scenarios. If the use of public health is essentially figurative and its resources are not unique, the particular and exclusive use of the term becomes insignificant. Progressive and effective policy and practice is possible, independent of any explicit public health label. If however public health is considered to have intrinsic and definable worth, we suggest that this currently asymmetrical association needs to be significantly developed with much higher levels of theoretical, practical and critical engagement between the two disciplines. Such work would result in more reflective and robust policy and practice.

Clinical Approaches of Whole-Body Vibration Exercises in Individuals with Stroke: A Narrative Revision

Stroke is associated with long-term disability and patients experience numerous physical impairments including muscle weakness, particularly in the paretic limbs, balance, and functional mobility. During acute stroke rehabilitation, when individuals are less likely to be functionally independent and rely on rehabilitative care, the efficacy of low skill interventions that can reduce sedentary behaviour should be established. As such, this narrative revision focused on the use of empirical studies of whole-body vibration exercise (WBVE) on different health outcomes in stroke patients. The effects of WBVE on neuromuscular performance (muscular strength and power), mobility, spasticity, and cardiovascular responses have been highlighted. Although some positive results were reported we can conclude that there is no solid evidence confirming the beneficial effects of WBVE among people with stroke compared with either other types of physical activities or sham WBVE. Therefore, further research should be performed in this area, testing the feasibility and efficacy of using WBVE in a more homogeneous sample of stroke patients or comparing different WBVE parameters.

Predictors of health-promoting behaviour among older adults with hypertension in Indonesia

OBJECTIVES

This study aimed to determine the predictors of health-promoting behaviour among older adults with hypertension in Bengkulu City, Bengkulu, Indonesia.

METHODS

A cross-sectional study was conducted in 333 older adults with hypertension, who were selected using multistage sampling method. Data were obtained by face-to-face interview with structured questionnaires. The questionnaires used in this study included the Health-Promoting Lifestyle Profile II (HPLP II), Hypertension Knowledge-Level Scale (HK-LS), Self-Rated Abilities for Health Practices Scale (SRAHP), Barriers to Health-promoting Behaviour Scales (BAS), Benefits to Health-Promoting Behaviour Scales (BES), Multidimensional Scale of Perceived Social Support (MSPSS) and Situational Influences Questionnaire (SIQ). Data were analysed by using multiple linear regressions.

RESULTS

The mean and standard deviation (Mean ± SD) of each questionnaire were as follows: HPLP II, 2.55 ± 0.19; HK-LS, 11.83 ± 3.00; SRAHP, 2.00 ± 5.87; BAS, 27.89 ± 2.70; BES, 34.29 ± 2.29; MSPSS, 60.35 ± 8.12; and SIQ, 47.71 ± 6.66. According to the multiple linear regression model, 36.9% of the variation in health-promoting behaviour among older adults with hypertension can be explained by six variables, namely, education, knowledge, self-efficacy, perceived barriers, social support and situational influences (adjusted R 2 = 0.369).

CONCLUSIONS

High and good-quality education will increase the level of health-promoting behaviour, whereas barriers, such as expense and time requirement, can decrease it. Situational influences and support from family and friends can also influence the older adult's attempts to change their health behaviour. Increased self-efficacy will clearly result in improved health-promoting behaviour of older adults with hypertension.

Physiological and behavioural indices of hostility: an extension of the capacity model to include exposure to affective stress and right lateralized motor stress

Right hemisphere functional cerebral systems have reliably been associated with sympathetic nervous system arousal and the perception of negative affective events. The goal of the current research was to provide additional support for the capacity model of hostility by examining changes attributable to functional cerebral systems within the right hemisphere using a dual concurrent task paradigm. To incorporate exposure to negative affective and right-lateralized motor stress using this approach, high and low hostile individuals completed a series of grip-strength tasks before and after hearing a recording of angry infant vocalizations. Results supported the capacity model in that high hostile individuals were unable to maintain regulatory control over right hemisphere activation as indicated through increased motor perseveration in the pre- and post-affective stress conditions, heightened systolic blood pressure (SBP) upon exposure to negative emotional sounds, and increased heart rate (HR) following stress. Conversely, low hostile individuals showed improved regulatory control over these regions as evidenced by reduced motor perseveration in the pre- and post-affective stress conditions, maintenance of SBP and reductions in HR following stress. The current data support the capacity model and extend its scope to include exposure to affective and right-lateralized motor stress.