Sinus Rhythm - Sinus Rhythm On ECG

Sinus Rhythm On ECG

Sinus rhythm, more commonly referred to as Normal Sinus Rhythm, is designated as the normal rhythm of the heart. Several requirements must be met for an electrocardiogram to be classified as normal sinus rhythm. Criteria for a Normal Sinus Rhythm include:

  1. A heart rate between 60-100 beats per minute.
  2. Regularity - Regular
  3. The SA node pacing the heart. Therefore, a "P" wave must be present for every "QRS" complex in a ratio of 1:1.
  4. PR interval is between .12 second and .20 second.
  5. QRS complex width should be less than .12 second.

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