BRYSON BIOMEDICAL ILLUSTRATIONS / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY BRYSON BIOMEDICAL ILLUSTRATIONS / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Human heart and ECG traces. Artwork of a human heart, with electrocardiogram (ECG) traces (centre left and upper right). The lungs (pink) are also seen. The electrodes at bottom right, are placed on the patient's chest to measure the electrical impulses of the heart. The ECG traces show the pumping of the heart as a series of waves of various sizes, which correspond to the electrical activity that occurs in the heart muscle. Abnormal heart rhythms (arrhythmia), may be caused by disease or drug overdose. An ECG is an important heart monitoring technique and can be used to diagnose disease.
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