Social network interventions to support cardiac rehabilitation and secondary prevention in the management of people with heart disease

BACKGROUND

Globally, cardiovascular diseases (CVD, that is, coronary heart (CHD) and circulatory diseases combined) contribute to 31% of all deaths, more than any other cause. In line with guidance in the UK and globally, cardiac rehabilitation programmes are widely offered to people with heart disease, and include psychosocial, educational, health behaviour change, and risk management components. Social support and social network interventions have potential to improve outcomes of these programmes, but whether and how these interventions work is poorly understood.  OBJECTIVES: To assess the effectiveness of social network and social support interventions to support cardiac rehabilitation and secondary prevention in the management of people with heart disease. The comparator was usual care with no element of social support (i.e. secondary prevention alone or with cardiac rehabilitation).  SEARCH METHODS: We undertook a systematic search of the following databases on 9 August 2022: CENTRAL, MEDLINE, Embase, and the Web of Science. We also searched ClinicalTrials.gov and the WHO ICTRP. We reviewed the reference lists of relevant systematic reviews and included primary studies, and we contacted experts to identify additional studies.  SELECTION CRITERIA: We included randomised controlled trials (RCTs) of social network or social support interventions for people with heart disease. We included studies regardless of their duration of follow-up, and included those reported as full text, published as abstract only, and unpublished data.

DATA COLLECTION AND ANALYSIS

Using Covidence, two review authors independently screened all identified titles. We retrieved full-text study reports and publications marked 'included', and two review authors independently screened these, and conducted data extraction. Two authors independently assessed risk of bias, and assessed the certainty of the evidence using GRADE. Primary outcomes were all-cause mortality, cardiovascular-related mortality, all-cause hospital admission, cardiovascular-related hospital admission, and health-related quality of life (HRQoL) measured at > 12 months follow-up.  MAIN RESULTS: We included 54 RCTs (126 publications) reporting data for a total of 11,445 people with heart disease. The median follow-up was seven months and median sample size was 96 participants. Of included study participants, 6414 (56%) were male, and the mean age ranged from 48.6 to 76.3 years. Studies included heart failure (41%), mixed cardiac disease (31%), post-myocardial infarction (13%), post-revascularisation (7%), CHD (7%), and cardiac X syndrome (1%) patients. The median intervention duration was 12 weeks. We identified notable diversity in social network and social support interventions, across what was delivered, how, and by whom.  We assessed risk of bias (RoB) in primary outcomes at > 12 months follow-up as either 'low' (2/15 studies), 'some concerns' (11/15), or 'high' (2/15). 'Some concerns' or 'high' RoB resulted from insufficient detail on blinding of outcome assessors, data missingness, and absence of pre-agreed statistical analysis plans. In particular, HRQoL outcomes were at high RoB. Using the GRADE method, we assessed the certainty of evidence as low or very low across outcomes. Social network or social support interventions had no clear effect on all-cause mortality (risk ratio (RR) 0.75, 95% confidence interval (CI) 0.49 to 1.13, I2 = 40%) or cardiovascular-related mortality (RR 0.85, 95% CI 0.66 to 1.10, I2 = 0%) at > 12 months follow-up. The evidence suggests that social network or social support interventions for heart disease may result in little to no difference in all-cause hospital admission (RR 1.03, 95% CI 0.86 to 1.22, I2 = 0%), or cardiovascular-related hospital admission (RR 0.92, 95% CI 0.77 to 1.10, I2 = 16%), with a low level of certainty. The evidence was very uncertain regarding the impact of social network interventions on HRQoL at > 12 months follow-up (SF-36 physical component score: mean difference (MD) 31.53, 95% CI -28.65 to 91.71, I2 = 100%, 2 trials/comparisons, 166 participants; mental component score MD 30.62, 95% CI -33.88 to 95.13, I2 = 100%, 2 trials/comparisons, 166 participants).  Regarding secondary outcomes, there may be a decrease in both systolic and diastolic blood pressure with social network or social support interventions. There was no evidence of impact found on psychological well-being, smoking, cholesterol, myocardial infarction, revascularisation, return to work/education, social isolation or connectedness, patient satisfaction, or adverse events.  Results of meta-regression did not suggest that the intervention effect was related to risk of bias, intervention type, duration, setting, and delivery mode, population type, study location, participant age, or percentage of male participants.  AUTHORS' CONCLUSIONS: We found no strong evidence for the effectiveness of such interventions, although modest effects were identified in relation to blood pressure. While the data presented in this review are indicative of potential for positive effects, the review also highlights the lack of sufficient evidence to conclusively support such interventions for people with heart disease. Further high-quality, well-reported RCTs are required to fully explore the potential of social support interventions in this context. Future reporting of social network and social support interventions for people with heart disease needs to be significantly clearer, and more effectively theorised, in order to ascertain causal pathways and effect on outcomes.

Mean population salt intake in Iran: A systematic review and meta-analysis

INTRODUCTION

High salt intake has been connected with the increase of many non-communicable diseases (NCDs) worldwide. Like other middle-income countries, Iran is experiencing a considerable increase in NCDs, necessitating attempts to reduce dietary salt intake. As in Iran there is uncertainty about the existing rate of salt intake. The present study aimed to estimate mean salt intake of Iranian population by systematically reviewing existing literature.

METHODS

This research is a systematic review and meta-analysis (PRISMA Protocol) of published article data, with no time constraint until the end of 2020, to estimate mean salt intake of Iranian population. A comprehensive literature search was performed on international databases of Medline, Science Direct, PubMed, Embase, Scopus, Springer, Online Library Wiley, Web of Science, Cochrane, and Google Scholar and domestic data bases of Iranmedex, Magiran, SID, and Medlib. Subgroup analysis was conducted for gender, region, measurement method, and age group. Research homogeneity was evaluated by I ² statistic. We reviewed all studies which met inclusion criteria. STATA Ver.13.1 was used to perform meta-analysis.

RESULTS

Meta-analysis of data from 32 studies showed that the average salt intake in all ages was 9.674 g/day (95% CI, 9.033-10.316 g/day). The lowest estimation of salt intake was 9.33 g/day (95% CI, 7.75-10.91 g/day) which was estimated from studies which used point collection method, and the highest estimate using the food reminder questionnaire was 10.41 g/day (95% CI, 8.49-12.34 g/day). Also, the average weight salt intake for men over 18 years old in different cities was 10.39 g/day (95% CI, 9.01-11.78 g/day), for women over 18 years in different cities 9.52 g/day (95% CI, 8.42-10.62 g/day), and children and adolescents was estimated at 5.664 g/day (95% CI, 2.91-8.41 g/day).

CONCLUSION

The intake of salt in the Iranian population is near twice the WHO recommendation. Therefore, it is necessary to consider effective strategies and interventions to reduce dietary salt intake in Iran as a health priority.

The impact of psychoeducational interventions on the outcomes of caregivers of patients with heart failure: A systematic review and meta-analysis

BACKGROUND

Heart failure is a global health care problem that causes a significant economic burden. Despite medical advancements, it's prognosis remains poor as many patients with heart failure experience symptoms that negatively impact Quality of Life. Caregivers are often responsible for helping and supporting family members manage their heart failure symptoms at home. In addition to managing their own medical problems and maintaining social and personal lives, significant burden and stress can occur. At present, caregivers receive little guidance or information to support them in their caregiving role.

OBJECTIVES

This review aims to determine the impact of psychoeducational interventions on the outcomes of caregivers of patients with heart failure.

DESIGN

Systematic review and meta-analysis.

DATA SOURCE

Five electronic databases: PsycINFO, Medline, CINAHL Plus, EMBASE and SCOPUS were searched from June 2007 to August 2019.

REVIEW METHODS

The conduct and reporting of this review was based on the Cochrane Handbook for Systematic Reviews of Interventions and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The Cochrane Risk of Bias Tool was used to assess the risk of bias amongst randomised controlled trials, and the Newcastle Ottawa Scale was used to assess risk of bias in one quasi-experimental study.

RESULTS

Ten articles met the inclusion criteria, consisting of seven studies, with a total sample size of 953 participants. The pooled result from two studies, conducted in America and China, reported that psychoeducational interventions significantly reduced depression at six months' follow-up (SMD -0.82; 95% CI -1.17 to -0.47; p = 0.73, I² =0%). The pooled result from two studies conducted in Sweden and Taiwan showed a significant improvement in heart failure knowledge at six months' follow-up (SMD 0.97; 95% CI 0.70 to 1,25; p < 0.00001, I² =0%). Finally, pooled results from three studies conducted in Sweden, China and Taiwan found a significant improvement in Quality of Life at 3 months' follow- up (SMD 0.25; 95% CI 0.25 to 0.48; p = 0.03). The three most common intervention components included: group based educational sessions, telemonitoring and telephone support, and written resources.

CONCLUSIONS

There was no specific type of psychoeducational intervention found to have a significant impact on caregiver outcomes, as interventions were heterogeneous consisting of multiple components. Further research is needed to determine the effectiveness of individual and combined components to identify the ideal intervention format and design for caregivers of patients with heart failure.

Attitudes, beliefs and barriers for adherence to the hyposodic diet in patients with heart failure

ABSTRACT Objectives: To identify attitudes, beliefs and barriers to adherence to the hyposodic diet in patients with heart failure and associated factors. Methods: Cross-sectional study with 41 individuals. The Dietary Sodium Restriction Questionnaire was used. Fisher's test was applied for analysis. Results: Attitudes were based on family and professional relationships; in the beliefs, it was highlighted to believe in the diet to improve health. As barriers, insufficient efforts were found to change the diet and taste of low salt foods. It was associated with adherence among the components factors such as: income, perception of cardiac improvement with the diet, family history of renal and heart failure and family adherence to the diet. Conclusions: The identified attitudes and beliefs refer, respectively, to social relationships and trust in the diet to improve health status. The barriers were: insufficient effort to modify the diet and food palatability. Economic, family and clinical factors were associated with hyposodic adherence.