Question

One channel records FHR on a calibrated chart in beats per minute while the other channel is used for recording uterine contractions calibrated _______

(a) 50-210 mmHg

(b) 0-210 mmHg

(c) 0-100 mmHg

(d) 0-50 mmHg

This question was posed to me during an online exam.

My question is based upon Data Compression Techniques topic in chapter Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

Answer 1

Correct answer is (c) 0-100 mmHg

To explain: A two channel chart recorder is incorporated in instruments used for monitoring labour activity. One channel records FHR on a calibrated chart in beats per minute while the other channel is used for recording uterine contractions calibrated 0-100 mmHg. The record is printed on thermo-sensitive z-fold paper using a high-resolution thermal matrix printer.