Elevated levels of NT-proBNP typically indicate the possibility of HF.[52] Furthermore, NT-proBNP levels are often associated with the severity of HF, with higher NT-proBNP levels associated with lower LVEF and higher hospitalization rates.[53] Lastly, NT-proBNP levels can be employed to monitor the effectiveness of HF treatment. Here, NPPB is linked to hydrops fetalis.