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What is the standard chart speed?

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in Biomedical Instrumentation by (76.6k points)
What is the standard chart speed?

(a) 2 cm/min

(b) 3 cm/min

(c) 4 cm/min

(d) 5 cm/min

I got this question during an interview for a job.

This key question is from Ear Oximeter in chapter Oximeters of Biomedical Instrumentation

1 Answer

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Best answer
Right answer is (a) 2 cm/min

For explanation I would say: 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 (50–210 bpm) while the other channel is used for recording uterine contractions calibrated 0-100 mmHg. The standard chart speed is usually 1 or 2 cm/min.

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