Correct electrode placement, lead views, and common artifact causes tested on EKG technician certification exams.
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- Where is the right arm (RA) electrode placed?
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On the inner wrist of the right arm or on the right forearm, avoiding muscle.- Where is the left arm (LA) electrode placed?
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On the inner wrist of the left arm or on the left forearm, avoiding muscle.- Where is the left leg (LL) electrode placed?
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On the inner ankle of the left leg or on the lower left calf, avoiding bone.- Where is the right leg (RL) electrode placed?
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On the inner ankle of the right leg or on the lower right calf, used as ground reference.- Which lead serves as the ground reference in a 12-lead EKG?
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The right leg (RL) electrode.- At which intercostal space is the V1 electrode placed?
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At the 4th intercostal space at the right sternal border.- At which intercostal space is the V2 electrode placed?
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At the 4th intercostal space at the left sternal border.- At which intercostal space is the V3 electrode placed?
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At the 4th intercostal space, midway between V2 and V4.- At which intercostal space is the V4 electrode placed?
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At the 5th intercostal space along the midclavicular line.- At which intercostal space is the V5 electrode placed?
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At the 5th intercostal space along the anterior axillary line.- At which intercostal space is the V6 electrode placed?
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At the 5th intercostal space along the midaxillary line.- What anatomical landmark is used to locate the 2nd intercostal space?
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The angle of Louis (where the 2nd rib attaches to the sternum).- What is the midclavicular line?
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A vertical line drawn downward from the midpoint of the clavicle.- What is the anterior axillary line?
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A vertical line drawn downward from the anterior (front) border of the axilla (armpit).- What is the midaxillary line?
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A vertical line drawn downward from the middle of the axilla (armpit).
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