NPPB and atrial fibrillation: Age (P < .002), AF course (P < .001), LAd (P < .001), and serum BNP concentration (P < .001) in the thrombus group were higher than those of patients in the non‐thrombus group, and the LVEF in the thrombus group was lower than that in the non‐thrombus group (P = .018).