To assess whether non-invasive fetal electrocardiography (NI-FECG) enables the diagnosis of fetal arrhythmias, а total of 24 pregnant women were included in this study, among whom, two had a twin pregnancy. Thus totaling 26 fetal cases. Extraction of the NI-FECG from the abdominal electrocardiographic mixture was performed. Abnormal rhythms events were automatically detected similar to a traditional Holter. The NI-FECG based diagnosis was compared to the reference fetal echocardiography diagnosis. NI-FECG and fetal echocardiography agreed on all cases on the presence of arrhythmia or not. It is possible to diagnose fetal arrhythmias using the NI-FECG technique. The elaboration of a fetal Holter ECG device will offer new opportunities for fetal diagnosis and remote monitoring of problematic pregnancies because of its low-cost, non-invasiveness, portability and minimal set-up requirements
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