Question

Foetal ECG signal detected via electrodes placed on mother’s abdomen is complex and requires accertion of maternal signals for obtaining FHR.

(a) True

(b) False

The question was asked during an interview.

My doubt is from Ambulatory Monitoring Instruments in section Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

Answer 1

The correct answer is:

(a) True

The fetal ECG signal detected via electrodes placed on the mother’s abdomen is indeed complex. This is because the signal is mixed with the maternal ECG and other maternal signals. To accurately obtain the fetal heart rate (FHR), techniques are used to separate the fetal ECG from the maternal signals, a process known as maternal signal cancellation or accretion. This is essential to get a clear and reliable reading of the fetal heart rate.