Define the electrocardiogram ECG The electrocardiogram is a graphic visualization of cardiac electrical activity Identify the 3 leads of a basic ECG and what these leads measure Lead 1 the negative electrode is placed on the right arm of under the right clavicle the positive electrode is placed on the left arm or under the left clavicle and the ground electrode is placed on the right leg or lowest rib or the left midclavicular line Lead 2 the negative electrode is on the the the left midclavicular line the positive electrode is on the left leg or lowest rib or left midclavicular line and the ground electrode is on the right leg or under the left clavicle Lead 3 the negative electrode is placed on the left arm or under the left clavicle the positive electrode is placed on the left leg or lowest rib or the left midclavicular line and the ground electrode is placed on the right leg or under the right clavicle Describe and demonstrate the proper placement of the ECG electrodes LEAD NEGATIVE ELECTRODE POSITIVE ELECTRODE GROUND ELECTRODE I Right arm or under the right clavicle Left arm or under the left clavicle Right leg or lowest rib left midclavicular line II Right arm or under the right clavicle Left leg or lowest rib left midclavicular line Right leg or under the left clavicle III Left arm or under the left clavicle Left leg or lowest rib left midclavicular line Right leg or under the right clavicle aVR Average potential of left arm or under the left clavicle and left leg or lowest rib left midclavicular line Right arm or under the right clavicle Right leg or lowest rib right midclavicular line aVL Average potential of right arm or under the right clavicle and left leg or lowest rib left midclavicular line
