Question

What should you do if ECG complexes are noisy?

Option 1: Increase gain
Option 2: Decrease gain
Option 3: Change paper speed
Option 4: Ignore it

Answer 1

If ECG complexes are noisy, the appropriate action is to decrease the gain. Increasing the gain, changing the paper speed, or ignoring the noise are not effective solutions.

Step-by-step explanation:

If ECG complexes are noisy, decreasing the gain can be a helpful solution. Decreasing the gain reduces the amplification of the signal, which can help to eliminate noise and make the signal clearer to analyze.

Increasing the gain, on the other hand, would amplify both the signal and the noise, making the noise even more prominent and difficult to interpret. Therefore, option 1 (Increase gain) is not the correct answer.

Changing the paper speed (option 3) and ignoring the noise (option 4) are not effective solutions to noisy ECG complexes. Adjusting the paper speed does not address the actual problem of noise in the signal, and ignoring the noise can lead to inaccurate interpretation of the ECG.