Final answer:
To reduce artifact in an ECG, limb lead electrodes should be placed as close to the torso as possible, minimizing interference from movements and external electrical noise.
Step-by-step explanation:
It can be helpful to reduce artifact by placing limb lead electrodes as close to the torso as possible when conducting an electrocardiogram (ECG). In a 12-lead ECG, six electrodes are placed on the chest, and four electrodes are placed on the limbs.
Limb electrodes are typically positioned to acquire accurate readings and minimize the interference from electrical artifacts. By positioning them closer to the torso, movements and external electrical noise that may affect the ECG tracing are minimized. This practice ensures better quality of the heart's electrical signal recordings, which are critical for diagnosing various cardiac conditions.