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?
- On the inner wrist of the right arm or on the right forearm, avoiding muscle.
- Where is the left arm (LA) electrode placed?
- On the inner wrist of the left arm or on the left forearm, avoiding muscle.
- Where is the left leg (LL) electrode placed?
- On the inner ankle of the left leg or on the lower left calf, avoiding bone.
- Where is the right leg (RL) electrode placed?
- 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?
- The right leg (RL) electrode.
- At which intercostal space is the V1 electrode placed?
- At the 4th intercostal space at the right sternal border.
- At which intercostal space is the V2 electrode placed?
- At the 4th intercostal space at the left sternal border.
- At which intercostal space is the V3 electrode placed?
- At the 4th intercostal space, midway between V2 and V4.
- At which intercostal space is the V4 electrode placed?
- At the 5th intercostal space along the midclavicular line.
- At which intercostal space is the V5 electrode placed?
- At the 5th intercostal space along the anterior axillary line.
- At which intercostal space is the V6 electrode placed?
- At the 5th intercostal space along the midaxillary line.
- What anatomical landmark is used to locate the 2nd intercostal space?
- The angle of Louis (where the 2nd rib attaches to the sternum).
- What is the midclavicular line?
- A vertical line drawn downward from the midpoint of the clavicle.
- What is the anterior axillary line?
- A vertical line drawn downward from the anterior (front) border of the axilla (armpit).
- What is the midaxillary line?
- A vertical line drawn downward from the middle of the axilla (armpit).