Winter Final

Question 0

Are normal T-waves symmetrical or asymmetrical?

Answer 0

Asymmetrical

Question 1

Normal T-waves are upright in which leads?

Answer 1

I,II,V2,V3,V4,V5,V6

Question 2

What are the 3 T-wave abnormalities that indicate a high probability of an acute problem?

Answer 2

1. Hyperacute
2. Deep, inverted, symmetrical T waves in V2-V5, associated with chest pain
3. Tall peaked (hyperkalemia)

Question 3

Describe the difference between hyperacute and peaked T-waves.

Answer 3

Hyperacute tend to be bulkier and more symmetrical.

Question 4

Which morphology of ST depression is worse?

1. Flat or down sloping
2. Up sloping

Answer 4

Flat or down sloping

Question 5

When you extensive ST depression throughout the 12-lead, what should you think?

Answer 5

Possible NSTEMI

Question 6

What is prinzmetals angina?

Answer 6

Caused by a cardiac artery spasm and indistinguishable from a STEMI.
ST elevation will often subside after nitro

Question 7

Name 3 things that can mimic a STEMI.

Answer 7

Paced rhythm
Pericarditis
LBBB

Question 8

Name 3 possible ways to differentiate pericarditis vs. STEMI.

Answer 8

Diffuse, widespread st elevation
PR segment depression in a majority of the leads
No reciprocal changes

Question 9

What is the main criteria for a RBBB?

Answer 9

V1: terminal portion of QRS is positive.

Lead I and V6 have slurred (rounded) S waves

Question 10

What is the main criteria for a LBBB?

Answer 10

Terminal portion of the QRS in V1 is negative

QRS in I and V6 are almost completely positive

Question 11

Is it possible to tell if a LBBB is acute or long term?

Answer 11

NO!

Question 12

Is it possible to identify a STEMI in the presence of a RBBB?

Answer 12

Yes, ST elevation is not a normal part of RBBB ECG changes.