Answer MI 21: Difference between revisions
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[[Image:KJcasus12.jpg|thumb| | {{Case| | ||
|previouspage= MI 20 | |||
|previousname= MI 20 | |||
|nextpage=MI 22 | |||
|nextname=MI 22 | |||
}} | |||
'''Where is this myocardial infarction located?''' | |||
[[Image:KJcasus12.jpg|700px|thumb|left|ECG MI 21. Click on image for enlargement.]] | |||
{{clr}} | |||
==Answer== | |||
* Following the 7+2 steps: | * Following the 7+2 steps: | ||
**Rhythm | **Rhythm | ||
Latest revision as of 11:28, 11 November 2008
| This page is part of Cases and Examples |
Where is this myocardial infarction located?
Answer
- Following the 7+2 steps:
- Rhythm
- The ECG shows a regular rhythm with normal P waves (positive in I, III and AVF, negative in AVR), followed by QRS complexes. Sinusrhythm
- Heart rate
- 90 bpm
- Conduction (PQ,QRS,QT)
- PQ: 160ms QRS: 80 ms QT: 340ms QTc: 416ms
- Heartaxis
- QRS positive in I and negative in II and AVF: left heart axis deviation
- P wave morphology
- P wave positive in II, III and AVF, biphasic in V1. The P waves have normal morphology.
- QRS morphology
- Narrow QRS. QS in V1-V2. Q in V4. Reduced R wave progression.
- ST morphology
- ST elevation in I, AVL, V1-V5 (V3=V4R and not elevated). ST depression in III and AVF.
- Compare with the old ECG (not available, so skip this step)
- Conclusion?
- Rhythm
Sinusrhythm with anteroseptal infarction. Ischemic vector is pointing upwards (ST depression in AVF), a sign of proximal LAD occlusion.