Fetal ECG detection in abdominal recordings: A method for QRS location

Noninvasive maternal abdominal recordings can help improving fetal monitoring. In this work, in the context of PhysioNet/Computing in Cardiology Challenge 2013, we develop a method to locate fetal QRS in those recordings. First we eliminate baseline wander and other artifacts through median filter, Notch, and low pass filters. Using the four available channels we locate maternal QRS complexes and remove them from the ECG with an adaptive linear filter. With a peak detector, we locate Fetal QRS occurrences in each channel. The last step consists on selecting one of the four sets of Fetal QRS detections.