Electrocardiograms (ECG) of a normal heart rate, artwork. An ECG measures the electrical activity of the heart. The wave on the ECG appears upwards or

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Electrocardiograms (ECG) of a normal heart rate, artwork. An ECG measures the electrical activity of the heart. The wave on the ECG appears upwards or downwards depending upon whether the electrical activity is going towards or away from the area of the body the electrode is placed on. This diagram shows 12 traces (or leads, upper 3 lines), which are obtained from placing 10 electrodes on the body, six on the chest and one on each arm and leg.

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Size: 5737px × 3130px
Photo credit: © PETER GARDINER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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