Question

Signal processing for FHR determination can be based either on detecting the foetal heart valve motion or on detecting the heart wall motion in Abdominal foetal electrocardiogram technique.

(a) True

(b) False

This question was posed to me during an online exam.

Question is from Oximeters topic in chapter Oximeters of Biomedical Instrumentation

Answer 1

Correct option is (b) False

Explanation: False, Signal processing for FHR determination can be based either on detecting the foetal heart valve motion or on detecting the heart wall motion in Ultrasound technique as The heart valve motion detection technique is based on the distinct ultrasound frequency shift produced by the fast opening and closing of the heart valves. The technique, however, requires that the ultrasound beam must be directed against the relatively small heart valves involving a longer search period and frequent repositioning of the transducer. Therefore, it is not preferred for continuous monitoring applications.