Figure 1From: Determining the prevalence and predictors of sleep disordered breathing in patients with chronic heart failure: rationale and design of the SCHLA-HF registry Patient flow and populations in the SCHLA-HF registry. AHI, apnea-hypopnea index; BMI, body mass index; LVEF, left ventricular ejection fraction; NYHA, New York Heart Association; PG, polygraphy; PSG, polysomnography; SDB, sleep-disordered breathing.Back to article page