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Flashcards in EKG III Deck (26)
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1
Q

In reciprocal ST depression, which leads show an ST elevation?

A

II, III, aVF

2
Q

In reciprocal ST depression, which leads show an ST depression?

A

I and aVL

3
Q

Give me the leads for the localization of an aneterior MI

A

V2, V3, V4 (at least 2)

4
Q

Give me the leads for the localization of an Anteroseptal MI

A

V1, V2, V3 (+- V4)

5
Q

Give me the leads for the localization of an Anterolateral MI

A

V4, V5, V6 (+- V3 or V2)

6
Q

Give me the leads for the localization of an Extensive anterior MI

A

V1-V6 (all)

7
Q

Give me the leads for the localization of an Lateral MI

A

V5, V6 (+- I or aVL)

8
Q

Give me the leads for the localization of a high lateral MI

A

I, aVL

9
Q

Give me the leads for the localization of an Inferior MI

A

II, III, aVF

10
Q

Give me the leads for the localization of an inferolateral MI

A

II, III, aVF, V6 (+- V5)

11
Q

Give me the leads for the localization of a Posterior MI

A

V1, V2

12
Q

Give me the leads for the localization of an Inferoposterolateral MI

A

II, III, AvF, V6, V1, V2

13
Q

Give me the leads for the localization of a Right ventricular MI

A

V4R, +V3R and/or V5R

14
Q

What is the shape of the ST segment in early repolarization that makes it differnet than Acute pericarditis or an MI?

A

It’s concave UPWARDS

15
Q

What happens with the PR interval with acute pericarditis?

A

It’s depressed.

That’s why you treat acute pericarditis with SSRI’s.

16
Q

What are the specific Sx of acute pericarditis which makes it distinguishable from early repolarization and acute MI?

A

sharp pain, improves with change in body position, flu-like Sx

17
Q

What can be goofy about the ST segment in inferior or high lateral wall MI’s?

A

Reciprocal ST depression

18
Q

Does a NSTEMI or STEMI give a Q wave MI after time?

A

STEMI

19
Q

Gonna be a long explanation, but tell me the reason why there are significant Q waves on EKG’s with some MI’s.

A

infarction on wall –> wall becomes dead and inert –> EKG reads through inert wall to other side –> other side depolarizing normally from endocardium to epicardium –> depolarization AWAY from + electrode –> large depression on Q wave.

20
Q

What are the 2 criteria for determining significant Q waves on EKG?

A
  1. > 1mm wide

2. > 1/3 the amplitude of the QRS complex

21
Q

Give me the time when the following EKG characteristics occur for an MI:

Normal R wave, peaked ST segment, T wave

A

Acute MI (onset and first several hours)

22
Q

What wave diminishes after the first day in an MI?

A

R wave

23
Q

When does the T wave become inverted after the initial MI?

A

1st and 2nd days

24
Q

During the first and second days after an MI, is the ST segment still just as high as the original form, or has it decreased?

A

It decreased.

You bastard.

25
Q

Give me the time when the following EKG characteristics occur for an MI:

No R wave, deep Q wave, ST segment back to baseline, T wave inversion peresists.

A

after 2-3 days

26
Q

After several weeks-months, which waves persist?

A

Q waves and T wave inversion (but lessens a little)