MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Cardiac arrest. Computer artwork of an ECG (electrocardiogram) heart trace, showing heart stoppage or cardiac arrest. This may indicate a fatal heart attack and death. An ECG heart trace measures the pumping of the heart as a series of small and larger waves. These waves correspond to the electrical activity of heart muscle during contraction and relaxation. Two full heatbeats are depicted at left and centre. The trace then flattens into cardiac arrest. ECG measurement is an important means of diagnosing heart diseases like coronary artery disease, thrombosis, cardiac arrhythmia, heart attack and death.
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