Serum H19 was inversely correlated with the presence of low AF (r = −0.299, P = 0.006), while was positively correlated with platelet count (r = 0.250, P = 0.025), SBP (r = 0.27, P = 0.014), DBP (r = 0.296, P = 0.007), and mean arterial pressure (MAP) (r = 0.308, P = 0.005). Here, H19 is linked to atrial fibrillation.