The most authoritative answer in 2024
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Harper Wright——Studied at University of Chicago, Lives in Chicago, IL
As a medical professional with expertise in cardiology, I can explain where ECG leads are placed on the body. An ECG, or electrocardiogram, is a test that measures the electrical activity of the heart. The standard ECG has 12 leads, which are typically placed as follows:
1. Lead I: Between the left arm (LA) and the right arm (RA).
2. Lead II: Between the right arm (RA) and the left leg (LL).
3. Lead III: Between the left arm (LA) and the left leg (LL).
4. Lead aVR: A unipolar lead with the positive electrode on the right arm (RA).
5. Lead aVL: A unipolar lead with the positive electrode on the left arm (LA).
6. Lead aVF: A unipolar lead with the positive electrode on the left leg (LL).
7.
Lead V1: On the chest, specifically at the fourth intercostal space to the right of the sternum.
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Lead V2: On the chest, at the fourth intercostal space to the left of the sternum.
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Lead V3: Between V2 and V4, typically at the midpoint of the line between these two leads.
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Lead V4: On the chest, at the fifth intercostal space on the midclavicular line (the line that runs from the center of the clavicle to the nipple).
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1. Lead V5: Laterally from V4, typically in the midaxillary line (the line that runs from the mid-point of the axilla, or armpit, to the mid-point of the clavicle).
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2. Lead V6: Laterally from V5, typically in the anterior axillary line (the line that runs from the anterior axillary fold to the mid-point of the clavicle).
Each lead provides a different view of the heart's electrical activity, allowing doctors to detect a variety of conditions, including heart attacks, arrhythmias, and other heart problems.
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Oliver Gonzalez——Works at the World Intellectual Property Organization, Lives in Geneva, Switzerland.
12 Lead EKG Electrode PlacementELECTRODE PLACEMENT V14th Intercostal space to the right of the sternumV24th Intercostal space to the left of the sternumV3Midway between V2 and V4V45th Intercostal space at the midclavicular line6 more rowsread more >>
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