
Normal ECG
Enhancement of an electrocardiogram (ECG) showing a normal heart rate. Shown here are 2 strokes at a regular interval, indicating a normal heart beat. An ECG measures the electrical activity of the heart. Contractions are caused by electrical signals between the upper (atrial) and lower (ventricle) chambers. The tall peak indicates the pumping action of the ventricles.
Credit
Science Source
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Dimensions
3427 x 2082 pixels
Print Size @ 300 dpi
11 x 7 inches / 29 x 18 cm