Michel Komajda1, Jakob Schöpe2, Stefan Wagenpfeil2, Luigi Tavazzi3, Michael Böhm4, Piotr Ponikowski5, Stefan D Anker6,7, Gerasimos S Filippatos8, Martin R Cowie9. 1. Department of Cardiology, Groupe Hospitalier, Paris Saint Joseph, Paris, France. 2. Institute for Medical Biometry, Epidemiology and Medical Informatics, Saarland University, Homburg, Germany. 3. Maria Cecilia Hospital, GVM Care & Research, Ettore Sansavini Health Science Foundation, Cotignola, Italy. 4. Internal Medicine Clinic III, Saarland University Clinic, Saarland University, Homburg, Germany. 5. Department of Heart Diseases, Medical University, Faculty of Public Health, Wroclaw, Poland. 6. Division of Cardiology and Metabolism, Department of Cardiology (CVK); and Berlin-Brandenburg Center for Regenerative Therapies (BCRT); German Centre for Cardiovascular Research (DZHK) partner site Berlin, Charité Universitätsmedizin Berlin, Berlin, Germany. 7. Department of Cardiology and Pneumology, University Medicine Göttingen (UMG), Göttingen, Germany. 8. Department of Cardiology, National and Kapodistrian University of Athens, School of Medicine, Athens University Hospital Attikon, Athens, Greece. 9. National Heart and Lung Institute, Imperial College London (Royal Brompton Hospital), London, UK.
Abstract
BACKGROUND: Physicians' adherence to guideline-recommended therapy is associated with short-term clinical outcomes in heart failure (HF) with reduced ejection fraction (HFrEF). However, its impact on longer-term outcomes is poorly documented. Here, we present results from the 18-month follow-up of the QUALIFY registry. METHODS AND RESULTS: Data at 18 months were available for 6118 ambulatory HFrEF patients from this international prospective observational survey. Adherence was measured as a continuous variable, ranging from 0 to 1, and was assessed for five classes of recommended HF medications and dosages. Most deaths were cardiovascular (CV) (228/394) and HF-related (191/394) and the same was true for unplanned hospitalizations (1175 CV and 861 HF-related hospitalizations, out of a total of 1541). According to univariable analysis, CV and HF deaths were significantly associated with physician adherence to guidelines. In multivariable analysis, HF death was associated with adherence level [subdistribution hazard ratio (SHR) 0.93, 95% confidence interval (CI) 0.87-0.99 per 0.1 unit adherence level increase; P = 0.034] as was composite of HF hospitalization or CV death (SHR 0.97, 95% CI 0.94-0.99 per 0.1 unit adherence level increase; P = 0.043), whereas unplanned all-cause, CV or HF hospitalizations were not (all-cause: SHR 0.99, 95% CI 0.9-1.02; CV: SHR 0.98, 95% CI 0.96-1.01; and HF: SHR 0.99, 95% CI 0.96-1.02 per 0.1 unit change in adherence score; P = 0.52, P = 0.2, and P = 0.4, respectively). CONCLUSION: These results suggest that physicians' adherence to guideline-recommended HF therapies is associated with improved outcomes in HFrEF. Practical strategies should be established to improve physicians' adherence to guidelines.
BACKGROUND: Physicians' adherence to guideline-recommended therapy is associated with short-term clinical outcomes in heart failure (HF) with reduced ejection fraction (HFrEF). However, its impact on longer-term outcomes is poorly documented. Here, we present results from the 18-month follow-up of the QUALIFY registry. METHODS AND RESULTS: Data at 18 months were available for 6118 ambulatory HFrEF patients from this international prospective observational survey. Adherence was measured as a continuous variable, ranging from 0 to 1, and was assessed for five classes of recommended HF medications and dosages. Most deaths were cardiovascular (CV) (228/394) and HF-related (191/394) and the same was true for unplanned hospitalizations (1175 CV and 861 HF-related hospitalizations, out of a total of 1541). According to univariable analysis, CV and HF deaths were significantly associated with physician adherence to guidelines. In multivariable analysis, HF death was associated with adherence level [subdistribution hazard ratio (SHR) 0.93, 95% confidence interval (CI) 0.87-0.99 per 0.1 unit adherence level increase; P = 0.034] as was composite of HF hospitalization or CV death (SHR 0.97, 95% CI 0.94-0.99 per 0.1 unit adherence level increase; P = 0.043), whereas unplanned all-cause, CV or HF hospitalizations were not (all-cause: SHR 0.99, 95% CI 0.9-1.02; CV: SHR 0.98, 95% CI 0.96-1.01; and HF: SHR 0.99, 95% CI 0.96-1.02 per 0.1 unit change in adherence score; P = 0.52, P = 0.2, and P = 0.4, respectively). CONCLUSION: These results suggest that physicians' adherence to guideline-recommended HF therapies is associated with improved outcomes in HFrEF. Practical strategies should be established to improve physicians' adherence to guidelines.
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