QRS Morphology: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 7: | Line 7: | ||
{{authors| | {{authors| | ||
|mainauthor= [[user:Drj|J.S.S.G. de Jong, MD]] | |mainauthor= [[user:Drj|J.S.S.G. de Jong, MD]] | ||
| | |supervisor= | ||
|coauthor= | |coauthor= | ||
|moderator= [[user:Drj|J.S.S.G. de Jong, MD]] | |moderator= [[user:Drj|J.S.S.G. de Jong, MD]] | ||
Revision as of 09:31, 15 October 2007
| «Step 5: P wave morphology | Step 7: ST morphology» |
| Author(s) | J.S.S.G. de Jong, MD | |
| Moderator | J.S.S.G. de Jong, MD | |
| Supervisor | ||
| some notes about authorship | ||
The basic questions in judging QRS morphology are:
- Are there any pathological Q waves as a sign of previous myocardial infarction?
- Are there signs of left or right ventricular hypertrophy?
- Does the QRS complex show microvoltations (roughly QRS < 5mm)?
- Is the conduction normal or delayed (QRS-interval > 0,12s)?
- Is the R wave propagation normal? Normally R waves become larger from V1-V5. At V5 it should be maximal. If the R wave in V2 is larger than in V3, this could be a sign of a (previous) posterior myocardial infarction. Other causes are noted in the chapter Clockwise and Counterclockwise rotation.
If all these items are normal you can go on to the next step: ST morphology.