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

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.