Teach ECG

examiner brief

  • Introduce self
  • Confirm student identity
  • Confirm student level of experience
  • Set learning objectives → Components of ECG, structured approach to interpreting an ECG
  • Patient details on ECG
  • Calibration: Speed = 25mm/s hence small squares 0.04s, or 40ms, 1mm height
  • Rate: calculate by 300/number of big squares between QRS
  • Rhythm - regular/irregular
  • Axis
  • P waves
  • PR interval
  • QRS <120ms
    • Q waves: pathological = >1mm wide >2mm deep or in V1-3
  • QT/sqrt(R-R interval) in seconds - corrected QT interval used as it is rate dependent
  • T waves - should be same direction of QRS, shape
    • hyperacute – broad, asymmetrically peaked, eg T wave > V6 QRS
  • ST elevation/depression
  • Summarises ECG findings well
  • Invites questions and manages them well
  • Checks understanding
  • Identifies further learning for learner to cover
  • Summarizes session/objectives
    #osce-answer-questions

WOBBLER syncope