Basic EKG Interpretation Part 3

Question 1

What progressive EKG changes are expected in MI?

Answer 1

Hyperacute T waves
ST elevation
Q wave develops
ST returns to normal, T wave inversion
Loss of R waves
Return of T wave to normal

Question 2

When would we see persistent ST elevation?

Answer 2

Left ventricular aneurysm

Question 3

We can have left dominant and right dominant hearts. What does this mean?

Answer 3

It refers to which artery is supplying the posterior heart

• -if RCA, then its right dominant
• -if Left circumflex, its left dominant

Question 4

What leads correspond to the inferior heart?

Answer 4

II, III, avF

Question 5

What leads correspond to the anteroseptal heart?

Answer 5

V1, V2

Question 6

What leads correspond to the anterior heart?

Answer 6

V3-V5

Question 7

What leads correspond to the lateral heart?

Answer 7

I, avL, V6

Question 8

What artery supplies the inferior heart?/What artery is involved in inferior MI?

Answer 8

RCA or distal left circumflex

Question 9

What artery supplies the anterior heart?/What artery is involved in anterior MI?

Answer 9

LAD

Question 10

What artery supplies the lateral heart?/What artery is involved in lateral MI?

Answer 10

proximal left circumflex