Abstract 18095: Prognostic Impact of Sleep Duration and Sleep Efficiency on Mortality in Patients with Chronic Heart Failure

Context: Both short and long self-reported sleep duration has been linked to increased mortality risk. The underlying mechanisms for the mortality risk increase in long sleepers are unknown. Objective: To test, whether long self-reported sleep duration is paralleled by impaired objectively measured sleep efficiency and to assess whether impaired sleep efficiency is an independent risk factor for death in patients with chronic heart failure (CHF). Hypotheses were formulated after data collection. Design, Setting, Patients: Observational study of 211 consecutive CHF patients (age 63±10 years, 89% men, left ventricular ejection fraction 34±10%), who underwent polysomnography and completed standardized questionnaires between 1/2002 and 12/2009 at the University Hospital Regensburg. Main Outcome: All cause mortality ascertained by medical documents. Follow-up was performed between 12/2009 and 01/2010 (mean follow-up time: 44±26 months). Methods and Results: Comparison of objective sleep efficiency in CHF patie...