ECG
Electrocardiogram: A recording of the electrical activity of the heart. Abbreviated ECG and EKG. An ECG is a simple, noninvasive procedure. Electrodes are placed on the skin of the chest and connected in a specific order to a machine that, when turned on, measures electrical activity all over the heart.
Similarly, lead III measures electrical potential between the left arm – negative - and the left leg –positive, looking at the heart from an INFERIOR RIGHT angle. LeadsaVR, aVL, and aVF, or “augmented limb leads”, are UNIpolar. ... The chest leads, or precordial leads, view the heart in a HORIZONTAL plane
P wave is the first short upward movement of the ECG tracing. It indicates that the atria are contracting, pumping blood into the ventricles. The QRS complex, normally beginning with a downward deflection, Q; a larger upwards deflection, a peak (R); and then a downwards S wave.
Similarly, lead III measures electrical potential between the left arm – negative - and the left leg –positive, looking at the heart from an INFERIOR RIGHT angle. LeadsaVR, aVL, and aVF, or “augmented limb leads”, are UNIpolar. ... The chest leads, or precordial leads, view the heart in a HORIZONTAL plane
P wave is the first short upward movement of the ECG tracing. It indicates that the atria are contracting, pumping blood into the ventricles. The QRS complex, normally beginning with a downward deflection, Q; a larger upwards deflection, a peak (R); and then a downwards S wave.
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