Rapid EKG Flashcards
Lead 1 is at
0 degrees
Lead II is at
60 degrees
Lead III is at
120 degrees
Lead AvL
-30 degrees
Lead aVr is at
-150 degrees
Lead aVf is at
90 degrees
The normal electrical axis range is
-30 to 90 degrees
A left axis deviation is
-30 to -90 degrees
A right axis deviation is
90 to 180 degrees
Lead V1 is at
120
Lead V2
90
Lead V3
75
Lead V4
60
Lead V5
30
Lead V6
0
V1 and V2 are the
Anteroseptal leads
V3 and V4 are the
Anteroapical leads
Leads V5 and V6 are the
Anterolateral leads
The lateral leads include
1, aVL, V5 and V6 and tell us about the left circumflex supply
The inferior leads include
II, III, and aVF and tell us about the right coronary artery
What are the anterior leads?
V1-V4 and they tell us about the left anterior descending artery
Why might a left axis deviation occur?
Normal variation due to diaphragm elevation (pregnancy)
Left ventricular enlargement
Inferior MIA
Right sided pneumothorax
Why might a right axis deviation occur?
Normal variation in children, right ventricular enlargement, lateral myocardial infarction, left sided tension pneumothorax
