QRS Morphology

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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 (if QRS is > 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 V3, this could be a sign of a (previous) posterior myocardial infarction.

If all these questions can be answered with 'no' you can go on to the next step: ST morphology. <analytics uacct="UA-807577-6"></analytics>