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Interpretation 313 - Sinus Rhythms


  • The previous slides presented the five-steps of rhythm analysis. These five steps must be followed regardless of how simple of complex the tracing is you are reviewing.
  • The information gathered in these steps are telling a story.
  • The title of that story is the interpretation.

Sinus Rhythm Types

The dysrhythmias in this category occur as a result of influences on the Sinoatrial (SA) node. Rhythms in this category will share similarities in a normal appearing P wave, the PR interval will measure in the “normal range” of 0.12 – 0.20 second, and the QRS typically will measure in the “normal range” of 0.06 – 0.10 second. For the most part, dysrhythmias in this category either effect the rate, rhythm regularity or both within a particular tracing. We will be discussing the following complexes and rhythms:

  • Normal Sinus Rhythm
  • Sinus Bradycardia
  • Sinus Tachycardia
  • Sinus Dysrhythmia (Arrhythmia)
  • Sinus Arrest
  • Sinus Exit Block

Authors and Sources

Authors and Reviewers


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