Interference

Power line interference in ecg

Power line interference in ecg

Power line interference is easily recognizable since the interfering voltage in the ECG may have frequency 50 Hz. The interference may be due to stray effect of the alternating current fields due to loops in the patient's cables. Other causes are loos e contacts on the patient's cable as well as dirty electrodes.

  1. What is power line interference?
  2. How do you fix powerline interference on ECG?
  3. Which is the best filter to eliminate power line interference in ECG signal?
  4. What is PLI in ECG?

What is power line interference?

Power-line interference (PLI) and baseline wander (BW) are the major noise elements, present in the electrocardiogram (ECG) signals [1, 2]. The BW artefacts are introduced by respiration. These are of very low-frequency and mainly occurs between [0; 0.7] Hz [2].

How do you fix powerline interference on ECG?

To remove it, a high-pass filter of cut-off frequency 0.5 to 0.6 Hz can be used. Powerline interference (50 or 60 Hz noise from mains supply) can be removed by using a notch filter of 50 or 60 Hz cut-off frequency.

Which is the best filter to eliminate power line interference in ECG signal?

A 60 Hz notch filter can be used remove the power line interference.

What is PLI in ECG?

Abstract: Power line interference (PLI) is a major source of noise in the ECG signal which can severely affect its interpretation. Moderate PLI can mask the finer features of the underlying signal whereas severe interference can completely overwhelm it.

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