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QRS Morphology: Difference between revisions
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*Are there signs of left or right ventricular [[hypertrophy]]? | *Are there signs of left or right ventricular [[hypertrophy]]? | ||
*Does the QRS complex show [[microvoltations]] (roughly QRS < 5mm)? | *Does the QRS complex show [[microvoltations]] (roughly QRS < 5mm)? | ||
*Is the conduction normal or [[Conduction delay| | *Is the conduction normal or [[Conduction delay|prolonged]] (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 MI|posterior myocardial infarction]]. Other causes are noted in the chapter [[Clockwise and Counterclockwise rotation]]. | *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 MI|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]]. | If all these items are normal you can go on to the next step: [[ST morphology]]. | ||