Question

Sensitivity of _______ bpm/cm of the recording chart allows adequate reading of the recorded FHR.

(a) 5

(b) 10

(c) 15

(d) 20

The question was posed to me by my school principal while I was bunking the class.

I would like to ask this question from Exercise Stress Testing topic in portion Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

Answer 1

The correct answer is (d) 20

For explanation I would say: Cardiotocographs are designed to measure and record foetal heart rate on a beat-to-beat basis rather than on an average basis. Normally, accuracy of measurement may be 2–3% for the classification of responses. The sensitivity of 20 bpm/cm of the recording chart allows adequate reading of the recorded FHR.