Decoding the 12 Lead EKG: Understanding the 10 Leads

How many views of the heart does a 12-lead ECG provide?

• 12

• 3

• 6

• 10

What is the purpose of the electrode on the right leg in a 12-lead ECG?

• To provide a view of the heart

• To augment voltage

• To serve as an earth or ground

• To detect electrical impulses

Tags

NGSS.HS-PS3-5

Which lead looks at the heart from on top?

• Lead I

• Lead II

• Lead III

• aVR

What does lead II's view direction towards the heart?

• From the right arm

• From the left shoulder

• From the foot

• From on top

What does aVR stand for?

• Augmented Voltage Rear

• Augmented Voltage Left

• Augmented Voltage Right

• Augmented Voltage Foot

Which lead provides a view of the heart through the left shoulder?

• aVL

• aVR

• aVF

• Lead I

Which leads are used to diagnose an inferior infarct?

• Leads I, II, and III

• Leads aVR, aVL, and aVF

• Leads V1, V2, and V3

• Leads II, III, and aVF

Which coronary artery is most likely affected in an inferior infarct?

• Right coronary artery

• Left anterior descending artery

• Left marginal artery

• Circumflex branch of the left coronary artery

What does the presence of a thrombus in the left anterior descending artery indicate?

• Lateral infarct

• Inferior infarct

• Anterior infarct

• Posterior infarct

Which leads provide a view of the heart from the chest plane?

• Leads aVR, aVL, and aVF

• Leads I, II, and III

• Leads V1, V2, V3, V4, V5, and V6

• Leads II, III, and aVF