EKG Electrode Placement & Lead Systems Flashcards
6 cards from real EKG certification Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 EKG Electrode Placement & Lead Systems flashcards as text
When performing a 12-lead EKG, where should the V4 electrode be placed?
Answer: Fifth intercostal space, midclavicular line
V4 is placed at the fifth intercostal space at the left midclavicular line.
Which leads are considered the inferior leads on a 12-lead EKG?
Answer: II, III, and aVF
Leads II, III, and aVF view the inferior wall of the heart supplied by the right coronary artery.
What is the correct limb electrode placement for a standard 12-lead EKG?
Answer: RA on right arm, LA on left arm, RL on right leg, LL on left leg
Standard placement uses RA on the right arm, LA on the left arm, RL on the right leg, and LL on the left leg.
Lead aVR provides an electrical view of the heart from which perspective?
Answer: Right shoulder toward the heart
Lead aVR views the heart from the right shoulder perspective, looking at the right atrium and outflow tract.
If the V1 and V2 electrodes are placed too high on the chest, what is the most likely effect on the EKG tracing?
Answer: Altered R-wave progression mimicking septal pathology
High placement of V1 and V2 can reduce R-wave amplitude and simulate anterior septal abnormalities.
In Einthoven's triangle, Lead I measures the potential difference between which two electrodes?
Answer: Left arm (positive) and right arm (negative)
Lead I records the voltage difference from the right arm (negative) to the left arm (positive).