Lead II




Interpretation Rules

  • Intermittent non-conducted P waves without progressive prolongation of the PR interval (compare this to Mobitz I).
  • The PR interval in the conducted beats remains constant.
  • The P waves ‘march through’ at a constant rate.
  • The RR interval surrounding the dropped beat(s) is an exact multiple of the preceding RR interval (e.g. double the preceding RR interval for a single dropped beat, treble for two dropped beats, etc).
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