NPPB and Left atrial enlargement: The proportion of atrial cardiopathy in ESUS was significantly higher than that of LAA and SVO, and NT-proBNP >250 pg/ml was associated with a risk of death in patients with ESUS after discharge, while PTFV1 >5,000 μV·ms was not associated with prognosis, and no patient met the criteria for severe left atrial enlargement.