Exam-style question
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What is the purpose of filtering in ECG measurement?.
- A.To amplify the heart's electrical signals
- B.To remove unwanted noise from the signals
- C.To increase the speed of signal transmission
- D.To enhance the resolution of the ECG display
Model answer
What a good answer should say
- To remove unwanted noise from the signals
Explanation
Why this works
Filtering is used to remove unwanted noise from the signals detected by the electrodes. This mechanism ensures that only the relevant electrical signals from the heart are processed, which enhances the quality of the ECG waveform and allows for more accurate interpretation of heart activity, ultimately aiding in effective medical assessments.
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