“…Participants in 6 studies [ 13 , 14 , 30 , 31 , 32 , 33 ] were exclusively patients with STEMI, in 3 studies [ 34 , 35 , 36 ] participants were exclusively patients with CTO, and 3 studies [ 31 , 37 , 38 ] were patients with baseline heart failure. Thirteen studies [ 11 , 30 , 31 , 32 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ] reported the prognostic outcomes during hospitalization, 14 studies [ 14 , 33 , 34 , 35 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ] reported the prognostic outcomes for greater than or equal to one year, and 6 studies [ 10 , 13 , 36 , 56 , 57 , 58 ] reported the prognostic outcomes in both short and long term. The characteristics of the included studies are detailed (Table 1 , Ref.…”