NPPB and ventricular septal defect: In the post-op 24-h NT pro-BNP PS-matched cohort, there was no difference in EF values between the two groups from 24 h to 12 months after surgery, which further illustrated that post-op 24-h NT-proBNP change was a transient response, and didn't have relationship with mid-term clinical outcome for children with VSD surgery.