The conventional 12-lead EKG is defined by placing 6 leads on the frontal plane and 6 leads on the chest, providing information from 12 angles. Is this statement True or False?

The conventional 12-lead EKG is defined by placing 6 leads on the frontal plane and 6 leads on the chest, providing information from 12 angles. Is this statement True or False?

• A. True
• B. False
• C. Partially true
• D. Cannot determine

Answer: (A)

The statement is true. The conventional 12-lead ECG uses six limb leads to sample the heart’s electrical activity in the frontal plane, and six precordial (chest) leads to sample activity in the horizontal (transverse) plane. The limb leads I, II, III, aVR, aVL, and aVF give views from the frontal plane, while the chest leads V1 through V6, placed in specific positions across the chest, provide additional perspectives around the heart in the horizontal plane. Together these 12 leads offer multiple viewpoints (often described as different angles or directions) of the heart’s electrical activity, enabling assessment of conduction, ischemia, and infarction in different regions.

The statement is true. The conventional 12-lead ECG uses six limb leads to sample the heart’s electrical activity in the frontal plane, and six precordial (chest) leads to sample activity in the horizontal (transverse) plane. The limb leads I, II, III, aVR, aVL, and aVF give views from the frontal plane, while the chest leads V1 through V6, placed in specific positions across the chest, provide additional perspectives around the heart in the horizontal plane. Together these 12 leads offer multiple viewpoints (often described as different angles or directions) of the heart’s electrical activity, enabling assessment of conduction, ischemia, and infarction in different regions.