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25 Cards in this Set
- Front
- Back
|
RCA supplies ___. therefore an occlusion there will be visible in leads ___ (3).
|
inferior wall
II III aVF |
|
|
leads ___ (2) sit over RH, ___ (2) over LH, and ___ (2) over septum
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v1, v2
v5, v6 v3, v4 |
|
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SA node and AV node are perfused by ___. An occlusion of the latter can cause ___.
|
RCA
bradycardia |
|
|
the septum is mostly perfused by ___. it may receive ancillary perfusion from ___.
|
LAD
PDA |
|
|
obstruction of RCA can cause ___ and ___ infarctions
|
posterior
inferior |
|
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obstruction of LAD can cause ___ and ___ infarctions
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anterior
inferior |
|
|
change in QRS complex indicates ___, change in ST segment indicates ___, change in T wave indicates ___.
|
necrosis
injury ischemia |
|
|
the primary post-MI change to the QRS is ___. it appears ___ after the MI.
|
Q wave
1 day |
|
|
Q wave after an MI is ___ wide and ___ high
|
>.04s
> 1/4 of R wave height |
|
|
large anterior wall MIs can cause ___. this is suggested in the EKG by ___.
|
ventricular aneurysm
persistent STE |
|
|
ST depression means ___, and STE means ___ or ___.
|
injury to subendocardium
injury to whole wall pericarditis |
|
|
pericarditis pain gets worse with ___, but not with ___.
|
breathing
effort |
|
|
MI pain gets worse with ___, but not with ___.
|
effort
breathing |
|
|
ST changes usually have opposite polarity in ___ and ___ leads
|
anterior
inferior |
|
|
early in ischemia, T wave becomes ___, and then ___.
|
hyperacute
inverted |
|
|
hyperacute T wave indicates
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subendocardial ischemia
|
|
|
subendocardial ischemia has ___ ST segment
|
depressed >1 mm
|
|
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subendocardial injury has ___ ST segment
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depressed >1 mm
|
|
|
transmural ischemia has ___ ST segment
|
normal
|
|
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transmural injury has ___ ST segment
|
elevated
|
|
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subendocardial ischemia has ___ T wave
|
normal
|
|
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subendocardial injury has ___ T wave
|
normal
|
|
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transmural ischemia has ___ T wave
|
inverted
|
|
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transmural injury has ___ T wave
|
normal (but obscured by STE)
|
|
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STEMI is caused by a ___ occlusion, and NSTEMI by a ___ occlusion.
|
total
partial |
