Question

For how much time period, the weighting factors are updated to allow for quick adaptation to signal quality changes?

(a) Every 192 ms

(b) Every 16 ms

(c) Every 215 ms

(d) Every 200 ms

This question was addressed to me in semester exam.

I need to ask this question from Bedside Patient Monitoring System in chapter Patient Monitoring System of Biomedical Instrumentation

Answer 1

Right choice is (d) Every 200 ms

The best I can explain: The contribution from each ECG lead to the QRS detection signal is proportional to its measured quality based on the waveform amplitude, and the amount of muscle and baseline noise. The weighting factors are updated every 200 ms to allow for a quick adaption to signal quality changes.