MI

Question 1

Non-Q Wave MI clinical presentation?

ECG presentation?

Answer 1

(Less damaging)
typical chest pain
↑ myo enzymes

evolving ST seg and T wave changes
WITHOUT Q waves

Question 2

Anterior MI involves what part of heart?

Seen in what leads?

Answer 2

Anterior surface of LV

V1-4

Question 3

Septal MI involves what part of heart?

Seen in what leads?

Answer 3

vent septum

V1-2: septal
V1-3: anteroseptal

Question 4

Lateral MI involves what part of the heart?

Seen in what leads?

Seen as what ∆s on ECG?

Answer 4

L lat heart wall

I, aVL, V5-6

ST seg elevation
T wave inversion
path Q waves

Question 5

Inferior MI involves what part of the heart?

Seen in what leads?

Seen as what ∆s on ECG?

Answer 5

inferior surface

II, II aVF

ST seg elevation
T wave inversion
path Q waves

Question 6

Post MI, ECG ∆s normalize in what order?

Answer 6

ST seg then T waves

Q waves U persist

Question 7

Q waves w/o ST seg/T wave abnorm indicates what?

Answer 7

old infarct

Question 8

Posterior MI involves what part of the heart?

Seen in what leads?

Seen as what ∆s on ECG?

Answer 8

post surface

no leads here -> look for RECIPROCAL ∆s in V1-2

Large R wave (R>=S)
ST depression
(P) Q wave in V6