Ischemia and Infarct Flashcards
What the 3 other major causes of STE? (not AMI)
- Benign early repolarization (30%)
- LVH (30%)
- BBB (30%)
What % of MI’s are “silent”?
20-25%
What is the one typical finding on ECG for acute phase MI?
ST segment elevation
What is 2 typical findings of early subacute phase of MI on ECG?
-Pathologic Q waves
T-wave inversion
What is the one chronic change on ECG following MI?
-Pathologic Q waves
This ECG finding is noted as early as 30 minutes after the onset of coronary occlusion and transmural infarction.
Hyperacute T wave
What are the 3 criteria for AMI-related STE?
- ST segment elevation of >1 mm in limb leads
- ST segment elevation of >2mm in precordial leads
- ST segment is elevated 0.08 secs from J point
Non-infarctional STE has what shape?
concave
STEMI can have what 2 shapes?
- straight
- convex
What is the most specific ECG finding for ischemia?
downsloping ST segment
Abnormal Q waves can be defined as?
- > 1 mm wide
- >1/3 of QRS amplitude
Does STEMI or NSTEMI need to be sent to cath lab?
STEMI
Where is this infarcation located?
- ST elevation V2-V4
- May see new LBBB
- LAD occlusion
Anterior
Where is this infarcation located?
-ST elevation V2-V4, V5-V6 & aVL
anteriorlateral
Where is this infarcation located?
-ST elevation in Lead II, III, aVF
Inferior wall
