“…The worsening quality of sleep affects physical health, cognitive performance, daily activity, mental health, and has cardiac consequences in patients with HF [ 10 , 11 ]. In addition, previous studies have found an association between SD and a reduction in adaptation skills [ 12 ], attention problems, decreased memory, poor adherence to treatment and self-care difficulties [ 13 , 14 , 15 , 16 , 17 ]. Specifically, in patients with HF, SD contribute to the development and progression of cardiovascular disease, poor quality of life and higher levels of depressive symptoms [ 8 , 11 , 12 , 15 , 16 , 17 ].…”