The Development and Validation of Maternal and Fetal Electrocardiograms (ECG) Separation Algorithm Based on Artificial Intelligence Application

Inclusion Criteria

Inclusion Criteria: * Age over 18 years * Recordings obtained during the second or third trimester of pregnancy * Recording duration of at least 5 minutes * Singleton pregnancy * Signed informed consent Exclusion Criteria: * Age under 18 years; * Multiple pregnancy; * Recent medical procedures or interventions that could affect the quality of electrocardiographic data; * Severe maternal conditions (e.g., severe eclampsia, shock, severe organ failure, etc.); * Severe fetal conditions (e.g., significant hypoxia, severe placental-fetal syndrome, and other life-threatening states). Exclusion criteria: 1\. Patient's refusal to continue participation in the study.