Question

In the ST segment measurement, what is the bandwidth of the ST filter which is used to remove unwanted baseline noise?

(a) 0.05 Hz

(b) 0.67 Hz

(c) 0.5 Hz

(d) 0.067 Hz

Answer 1

The correct answer is (b) 0.67 Hz

The explanation is: To ensure that the ST segment can be measured accurately, the incoming ECG signals must have a low-end bandwidth of 0.05 Hz. A special ST filter with a higher low-end bandwidth of 0.67 Hz is used to further remove unwanted baseline noise.