• Susanne Unverzagt, Gabriele Meyer, Susanne Mittmann, Franziska-Antonia Samos, Malte Unverzagt, and Roland Prondzinsky.
• Institute for Medical Epidemiology, Biostatistics and Informatics, Martin-Luther-University Halle- Wittenberg, Halle (Saale), Institute of Health and Nursing Sciences, Martin-Luther-University Halle- Wittenberg, Halle (Saale), Asklepios Parkklinik Bad Salzungen, Carl-von-Basedow-Klinikum Saalekreis GmbH.
• Dtsch Arztebl Int. 2016 Jun 24; 113 (25): 423430423-30.

BackgroundDespite improved treatment options, heart failure remains the third most common cause of death in Germany and the most common reason for hospitalization. The treatment recommendations contained in the relevant guidelines have been incompletely applied in practice. The goal of this systematic review is to study the efficacy of adherence-promoting interventions for patients with heart failure with respect to the taking of medications, the implementation of recommended lifestyle changes, and the improvement in clinical endpoints.MethodsWe performed a meta-analysis of pertinent publications retrieved by a systematic literature search.Results55 randomized controlled trials were identified, in which a wide variety of interventions were carried out on heterogeneous patient groups with varying definitions of adherence. These trials included a total of 15 016 patients with heart failure who were cared for as either inpatients or outpatients. The efficacy of interventions to promote adherence to drug treatment was studied in 24 trials; these trials documented improved adherence in 10% of the patients overall (95% confidence interval [CI]: [5; 15]). The efficacy of interventions to promote adherence to lifestyle recommendations was studied in 42 trials; improved adherence was found in 31 trials. Improved adherence to at least one recommendation yielded a long-term absolute reduction in mortality of 2% (95% CI: [0; 4]) and a 10% reduction in the likelihood of hospitalization within 12 months of the start of the intervention (95% CI: [3; 17]).ConclusionMany effective interventions are available that can lead to sustained improvement in patient adherence and in clinical endpoints. Longterm success depends on patients' assuming responsibility for their own health and can be achieved with the aid of coordinated measures such as patient education and regular follow-up contacts.

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