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| navigate by keyword : attack background beat calipers cardiogram cardiologist cardiology care doctor ecg ekg electrical electrocardiogram electrocardiography emergency graph health healthy heart heartbeat hospital intervals measurement medical medicine monitor pulse rate science technology wave waveform |
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| A doctor demonstrates the use of calipers to measure the electrical intervals of an electrocardiogram, or EKG. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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