This checklist relates to a systematic interpretation of the 12-lead electrocardiogram.

 

  1. O
  • Overview: rate?
  • Overview: rhythm?

 

  1. P
  • P wave: positive in lead II? signs of atrial hypertrophy?
  • PR interval: duration? depression?

 

  1. Q
  • Pathological Q waves?
  • QRS complexes: wide? bundle-branch block pattern?

 

  1. R
  • Axis deviation?
  • R wave:  signs of ventricular hypertrophy

 

  1. S
  • S wave: signs of ventricular hypertrophy?
  • ST segment: elevation or depression?

 

  1. T
  • T waves: peaked? inverted?
  • QTc time: prolonged?

 

  1. +
  • Additional findings (e.g. U wave, J wave)?