image tag: electrocardiogram, orientation: horizontal, image quantity: 4

5184x3456px

ecg, electrocardiogram, stethoscope, heartbeat, heart, frequency, curve
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ecg, electrocardiogram, medical, heartbeat, heart, frequency, curve
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blood pressure monitor, high blood pressure, stethoscope, ecg, electrocardiogram, frequency, curve
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heart, beat, heart beat, heartbeat, emergency, pulse, medical