What color is the lead for the right arm in an ECG setup?

• A. Black
• B. Red
• C. White
• D. Green

Answer: (C)

In an ECG setup, the lead for the right arm is designated as white. This color coding is standardized in order to ensure consistency and accuracy in the placement of electrodes. The white lead is connected to the right arm of the patient, which is crucial for proper monitoring and interpretation of the heart's electrical activity.

Standardization of lead colors helps healthcare professionals quickly and correctly identify leads during setup, ensuring that the ECG reflects the correct representation of electrical impulses originating from the heart. Additionally, this color coding is critical for avoiding errors in lead placement, which could lead to misinterpretation of the ECG results. The other colors mentioned—black, red, and green—are used for different leads; black typically represents the left arm, red is often associated with the left leg, and green is used for the right leg.