Final answer:
To properly perform an EKG on a person with large breasts, the patient should lie down and the electrodes should be placed below the breasts.
Step-by-step explanation:
When doing an EKG (ECG) on a person with large breasts, have the patient lie down and place the electrodes below the breasts.
For a 12-lead ECG, six electrodes are placed on the chest and four electrodes are placed on the limbs. The electrodes on the chest should be placed below the breasts, in the intercostal spaces between the ribs. This ensures proper placement and accurate signal recording.