Abstract
Aim: This study aimed to compare the three dyspnea scales (Likert, VAS, and NRS) in patients with acute heart failure (AHF) in the emergency department (ED). 
 
 Materials and Methods: This study enrolled 114 patients prospectively diagnosed with AHF in the ED. We assessed the dyspnea scales for severity at admission and the 4th hour. We used the Likert scale, Visual Analogue Scale (VAS), and the Numerical Rating Scale (NRS).
 
 Results: Sixty-five patients were women. The mean age of the patients was 72.1 ± 11.7 years. 74.1% of the patients whose dyspnea was relieved were discharged. Seventy-seven of the patients were discharged from ED, while 37 were hospitalized, and 51.7% of the hospitalized patients had no improvement in dyspnea. The severity of dyspnea decreased after the treatment on each scale (p< 0.05). The 4th-hour scores were lower for all three scales (p< 0.01), but VAS and NRS scores on the 4th hour were higher in hospitalized patients than in discharged (p< 0.01). There was a similarly significant relationship between the admission and 4th hour of dyspnea scales (p
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