Question

when using a holter monitor, the ecg electrodes are attached to a patients: a shoulders b lower back c upper arms d chest wall

Explanation:

A Holter monitor is used to record the heart's electrical activity (ECG) over an extended period. The electrodes need to be placed where they can accurately detect the heart's electrical signals. The chest wall is the appropriate location as it is close to the heart, allowing for proper signal capture. The shoulders (A), lower back (B), and upper arms (C) are not the standard locations for attaching ECG electrodes for a Holter monitor as they are not optimally positioned to pick up the heart's electrical activity effectively.

Answer:

D. chest wall