Effectiveness of a home-based nursing support and cognitive restructuring intervention on the quality of life of family caregivers in primary care: A pragmatic cluster-randomized controlled trial.

BACKGROUND: Caregivers of patients with chronic conditions or disability experience fatigue, burden and poor health-related quality of life. There is evidence of the effectiveness of support interventions for decreasing this impact. However, little is known about the benefits of home-based nursing intervention in primary health care. OBJECTIVES: To evaluate the effectiveness of a home-based, nurse-led-intervention (CuidaCare) on the quality of life of caregivers of individuals with disabilities or chronic conditions living in the community, measured at 12-month follow-up. METHODS: A pragmatic, two-arm, cluster-randomized controlled trial with a 1-year follow-up period was performed between June 2013 and December 2015. Consecutive caregivers aged 65 years or older, all of whom assumed the primary responsibility of caring for people with disabling conditions for at least 6 months a year, were recruited from 22 primary health care centers. Subsequently, 11 centers were randomly assigned to usual care group, and 11 were assigned to the intervention group. The caregivers in the intervention group received the usual care and additional support (cognitive restructuring, health education and emotional support). The primary outcome was quality of life, assessed with the EQ-5D instrument (visual analog scale and utility index score); the secondary outcome variables were perception of burden, anxiety, and depression. Data were collected at baseline, at the end of the intervention, and at the 6- and 12-month follow-up visits. We analyzed the primary outcome as intention-to-treat, and missing data were added using the conditional mean single imputation method. RESULTS: A total of 224 caregivers were included in the study (102 in the intervention group and 122 in the usual care group). Generalized Estimating Equation models showed that the CuidaCare intervention was associated with a 5.46 point (95% CI: 2.57; 8.35) change in the quality of life, as measured with the visual analog scale adjusted for the rest of the variables at 12 months. It also produced an increase of 0.04 point (95% CI: 0.01; 0.07) in the utilities. No statistically significant differences were found between the two groups at 12 months with respect to the secondary outcomes. CONCLUSIONS: The findings suggest that incorporating a home-based, nurse-led-intervention for caregivers into primary care can improve the health-related quality of life of caregivers of patients with chronic or disabling conditions.

Design and rationale of a multicentre, randomised, double-blind, placebo-controlled clinical trial to evaluate the effect of vitamin D on ventricular remodelling in patients with anterior myocardial infarction: the VITamin D in Acute Myocardial Infarction (VITDAMI) trial.

INTRODUCTION: Decreased plasma vitamin D (VD) levels are linked to cardiovascular damage. However, clinical trials have not demonstrated a benefit of VD supplements on left ventricular (LV) remodelling. Anterior ST-elevation acute myocardial infarction (STEMI) is the best human model to study the effect of treatments on LV remodelling. We present a proof-of-concept study that aims to investigate whether VD improves LV remodelling in patients with anterior STEMI. METHODS AND ANALYSIS: The VITamin D in Acute Myocardial Infarction (VITDAMI) trial is a multicentre, randomised, double-blind, placebo-controlled trial. 144 patients with anterior STEMI will be assigned to receive calcifediol 0.266 mg capsules (Hidroferol SGC)/15 days or placebo on a 2:1 basis during 12 months. PRIMARY OBJECTIVE: to evaluate the effect of calcifediol on LV remodelling defined as an increase in LV end-diastolic volume ≥10% (MRI). SECONDARY OBJECTIVES: change in LV end-diastolic and end-systolic volumes, ejection fraction, LV mass, diastolic function, sphericity index and size of fibrotic area; endothelial function; plasma levels of aminoterminal fragment of B-type natriuretic peptide, galectin-3 and monocyte chemoattractant protein-1; levels of calcidiol (VD metabolite) and other components of mineral metabolism (fibroblast growth factor-23 (FGF-23), the soluble form of its receptor klotho, parathormone and phosphate). Differences in the effect of VD will be investigated according to the plasma levels of FGF-23 and klotho. Treatment safety and tolerability will be assessed. This is the first study to evaluate the effect of VD on cardiac remodelling in patients with STEMI. ETHICS AND DISSEMINATION: This trial has been approved by the corresponding Institutional Review Board (IRB) and National Competent Authority (Agencia Española de Medicamentos y Productos Sanitarios (AEMPS)). It will be conducted in accordance with good clinical practice (International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use - Good Clinical Practice (ICH-GCP)) requirements, ethical principles of the Declaration of Helsinki and national laws. The results will be submitted to indexed medical journals and national and international meetings. TRIAL REGISTRATION NUMBER: NCT02548364; Pre-results.

CuidaCare: effectiveness of a nursing intervention on the quality of life's caregiver: cluster-randomized clinical trial.

BACKGROUND: In Spain, family is the main source of care for dependent people. Numerous studies suggest that providing informal (unpaid) care during a prolonged period of time results in a morbidity-generating burden. Caregivers constitute a high-risk group that experiences elevated stress levels, which reduce their quality of life.Different strategies have been proposed to improve management of this phenomenon in order to minimize its impact, but definitive conclusions regarding their effectiveness are lacking. METHODS/DESIGN: A community clinical trial is proposed, with a 1-year follow-up period, that is multicentric, controlled, parallel, and with randomized allocation of clusters in 20 health care centers within the Community of Madrid. The study's objective is to evaluate the effectiveness of a standard care intervention in primary health care (intervention CuidaCare) to improve the quality of life of the caregivers, measured at 0, 6, and 12 months after the intervention.One hundred and forty two subjects (71 from each group) ≥65 years, identified by the nurse as the main caregivers, and who provide consent to participate in the study will be included.The main outcome variable will be perceived quality of life as measured by the Visual Analogue Scale (VAS) of EuroQol-5D (EQ-5D). The secondary outcome variables will be EQ-5D Dimensions, EQ-5D Index, nursing diagnosis, and Zarit's test. Prognostic variables will be recorded for the dependent patient and the caregiver.The principle analysis will be done by comparing the average change in EQ-5D VAS value before and after intervention between the two groups. All statistical tests will be performed as intention-to-treat. Prognostic factors' estimates will be adjusted by mixed-effects regression models. Possible confounding or effect-modifying factors will be taken into account. DISCUSSION: Assistance for the caregiver should be integrated into primary care services. In order to do so, incorporating standard, effective interventions with relevant outcome variables such as quality of life is necessary. Community care nurses are at a privileged position to develop interventions like the proposed one. TRIAL REGISTRATION: This trial has been registered in ClinicalTrials.gov under code number NCT 01478295.